divert(-1)

#

# Copyright (c) 1998-2009 Sendmail, Inc. and its suppliers.

# All rights reserved.

# Copyright (c) 1983, 1995 Eric P. Allman. All rights reserved.

# Copyright (c) 1988, 1993

# The Regents of the University of California. All rights reserved.

#

# Copyright 2004 Sun Microsystems, Inc. All rights reserved.

# Use is subject to license terms.

#

# By using this file, you agree to the terms and conditions set

# forth in the LICENSE file which can be found at the top level of

# the sendmail distribution.

#

#

divert(0)

VERSIONID(`$Id: proto.m4,v 8.741 2009/12/11 00:04:53 ca Exp $')

# level CF_LEVEL config file format

V`'CF_LEVEL/ifdef(`VENDOR_NAME', `VENDOR_NAME', `Sun')

divert(-1)

dnl if MAILER(`local') not defined: do it ourself; be nice

dnl maybe we should issue a warning?

ifdef(`_MAILER_local_',`', `MAILER(local)')

# do some sanity checking

ifdef(`__OSTYPE__',,

`errprint(`*** ERROR: No system type defined (use OSTYPE macro)

')')

# pick our default mailers

ifdef(`confSMTP_MAILER',, `define(`confSMTP_MAILER', `esmtp')')

ifdef(`confLOCAL_MAILER',, `define(`confLOCAL_MAILER', `local')')

ifdef(`confRELAY_MAILER',,

`define(`confRELAY_MAILER',

`ifdef(`_MAILER_smtp_', `relay',

`ifdef(`_MAILER_uucp', `uucp-new', `unknown')')')')

ifdef(`confUUCP_MAILER',, `define(`confUUCP_MAILER', `uucp-old')')

define(`_SMTP_', `confSMTP_MAILER')dnl for readability only

define(`_LOCAL_', `confLOCAL_MAILER')dnl for readability only

define(`_RELAY_', `confRELAY_MAILER')dnl for readability only

define(`_UUCP_', `confUUCP_MAILER')dnl for readability only

# back compatibility with old config files

ifdef(`confDEF_GROUP_ID',

`errprint(`*** confDEF_GROUP_ID is obsolete.

Use confDEF_USER_ID with a colon in the value instead.

')')

ifdef(`confREAD_TIMEOUT',

`errprint(`*** confREAD_TIMEOUT is obsolete.

Use individual confTO_<timeout> parameters instead.

')')

ifdef(`confMESSAGE_TIMEOUT',

`define(`_ARG_', index(confMESSAGE_TIMEOUT, /))

ifelse(_ARG_, -1,

`define(`confTO_QUEUERETURN', confMESSAGE_TIMEOUT)',

`define(`confTO_QUEUERETURN',

substr(confMESSAGE_TIMEOUT, 0, _ARG_))

define(`confTO_QUEUEWARN',

substr(confMESSAGE_TIMEOUT, eval(_ARG_+1)))')')

ifdef(`confMIN_FREE_BLOCKS', `ifelse(index(confMIN_FREE_BLOCKS, /), -1,,

`errprint(`*** compound confMIN_FREE_BLOCKS is obsolete.

Use confMAX_MESSAGE_SIZE for the second part of the value.

')')')

# Sanity check on ldap_routing feature

# If the user doesn't specify a new map, they better have given as a

# default LDAP specification which has the LDAP base (and most likely the host)

ifdef(`confLDAP_DEFAULT_SPEC',, `ifdef(`_LDAP_ROUTING_WARN_', `errprint(`

WARNING: Using default FEATURE(ldap_routing) map definition(s)

without setting confLDAP_DEFAULT_SPEC option.

')')')dnl

# clean option definitions below....

define(`_OPTION', `ifdef(`$2', `O $1`'ifelse(defn(`$2'), `',, `=$2')', `#O $1`'ifelse(`$3', `',,`=$3')')')dnl

dnl required to "rename" the check_* rulesets...

define(`_U_',ifdef(`_DELAY_CHECKS_',`',`_'))

dnl default relaying denied message

ifdef(`confRELAY_MSG', `', `define(`confRELAY_MSG',

ifdef(`_USE_AUTH_', `"550 Relaying denied. Proper authentication required."', `"550 Relaying denied"'))')

ifdef(`confRCPTREJ_MSG', `', `define(`confRCPTREJ_MSG', `"550 Mailbox disabled for this recipient"')')

define(`_CODE553', `553')

divert(0)dnl

# override file safeties - setting this option compromises system security,

# addressing the actual file configuration problem is preferred

# need to set this before any file actions are encountered in the cf file

_OPTION(DontBlameSendmail, `confDONT_BLAME_SENDMAIL', `safe')

# default LDAP map specification

# need to set this now before any LDAP maps are defined

_OPTION(LDAPDefaultSpec, `confLDAP_DEFAULT_SPEC', `-h localhost')

##################

# local info #

##################

# my LDAP cluster

# need to set this before any LDAP lookups are done (including classes)

ifdef(`confLDAP_CLUSTER', `D{sendmailMTACluster}`'confLDAP_CLUSTER', `#D{sendmailMTACluster}$m')

Cwlocalhost

ifdef(`USE_CW_FILE',

`# file containing names of hosts for which we receive email

Fw`'confCW_FILE',

`dnl')

# my official domain name

# ... `define' this only if sendmail cannot automatically determine your domain

ifdef(`confDOMAIN_NAME', `Dj`'confDOMAIN_NAME', `#Dj$w.Foo.COM')

# host/domain names ending with a token in class P are canonical

CP.

ifdef(`UUCP_RELAY',

`# UUCP relay host

DY`'UUCP_RELAY

CPUUCP

')dnl

ifdef(`BITNET_RELAY',

`# BITNET relay host

DB`'BITNET_RELAY

CPBITNET

')dnl

ifdef(`DECNET_RELAY',

`define(`_USE_DECNET_SYNTAX_', 1)dnl

# DECnet relay host

DC`'DECNET_RELAY

CPDECNET

')dnl

ifdef(`FAX_RELAY',

`# FAX relay host

DF`'FAX_RELAY

CPFAX

')dnl

# "Smart" relay host (may be null)

DS`'ifdef(`SMART_HOST', `SMART_HOST')

ifdef(`LUSER_RELAY', `dnl

# place to which unknown users should be forwarded

Kuser user -m -a<>

DL`'LUSER_RELAY',

`dnl')

# operators that cannot be in local usernames (i.e., network indicators)

CO @ % ifdef(`_NO_UUCP_', `', `!')

# a class with just dot (for identifying canonical names)

C..

# a class with just a left bracket (for identifying domain literals)

C[[

ifdef(`_ACCESS_TABLE_', `dnl

# access_db acceptance class

C{Accept}OK RELAY

ifdef(`_DELAY_COMPAT_8_10_',`dnl

ifdef(`_BLACKLIST_RCPT_',`dnl

# possible access_db RHS for spam friends/haters

C{SpamTag}SPAMFRIEND SPAMHATER')')',

`dnl')

dnl mark for "domain is ok" (resolved or accepted anyway)

define(`_RES_OK_', `OKR')dnl

ifdef(`_ACCEPT_UNRESOLVABLE_DOMAINS_',`dnl',`dnl

# Resolve map (to check if a host exists in check_mail)

Kresolve host -a<_RES_OK_> -T<TEMP>')

C{ResOk}_RES_OK_

ifdef(`_NEED_MACRO_MAP_', `dnl

ifdef(`_MACRO_MAP_', `', `# macro storage map

define(`_MACRO_MAP_', `1')dnl

Kmacro macro')', `dnl')

ifdef(`confCR_FILE', `dnl

# Hosts for which relaying is permitted ($=R)

FR`'confCR_FILE',

`dnl')

define(`TLS_SRV_TAG', `"TLS_Srv"')dnl

define(`TLS_CLT_TAG', `"TLS_Clt"')dnl

define(`TLS_RCPT_TAG', `"TLS_Rcpt"')dnl

define(`TLS_TRY_TAG', `"Try_TLS"')dnl

define(`SRV_FEAT_TAG', `"Srv_Features"')dnl

dnl this may be useful in other contexts too

ifdef(`_ARITH_MAP_', `', `# arithmetic map

define(`_ARITH_MAP_', `1')dnl

Karith arith')

ifdef(`_ACCESS_TABLE_', `dnl

ifdef(`_MACRO_MAP_', `', `# macro storage map

define(`_MACRO_MAP_', `1')dnl

Kmacro macro')

# possible values for TLS_connection in access map

C{Tls}VERIFY ENCR', `dnl')

ifdef(`_CERT_REGEX_ISSUER_', `dnl

# extract relevant part from cert issuer

KCERTIssuer regex _CERT_REGEX_ISSUER_', `dnl')

ifdef(`_CERT_REGEX_SUBJECT_', `dnl

# extract relevant part from cert subject

KCERTSubject regex _CERT_REGEX_SUBJECT_', `dnl')

ifdef(`LOCAL_RELAY', `dnl

# who I send unqualified names to if `FEATURE(stickyhost)' is used

# (null means deliver locally)

DR`'LOCAL_RELAY')

ifdef(`MAIL_HUB', `dnl

# who gets all local email traffic

# ($R has precedence for unqualified names if `FEATURE(stickyhost)' is used)

DH`'MAIL_HUB')

# dequoting map

Kdequote dequote`'ifdef(`confDEQUOTE_OPTS', ` confDEQUOTE_OPTS', `')

divert(0)dnl # end of nullclient diversion

# class E: names that should be exposed as from this host, even if we masquerade

# class L: names that should be delivered locally, even if we have a relay

# class M: domains that should be converted to $M

# class N: domains that should not be converted to $M

#CL root

undivert(5)dnl

ifdef(`_VIRTHOSTS_', `CR$={VirtHost}', `dnl')

ifdef(`MASQUERADE_NAME', `dnl

# who I masquerade as (null for no masquerading) (see also $=M)

DM`'MASQUERADE_NAME')

# my name for error messages

ifdef(`confMAILER_NAME', `Dn`'confMAILER_NAME', `#DnMAILER-DAEMON')

undivert(6)dnl LOCAL_CONFIG

include(_CF_DIR_`m4/version.m4')

###############

# Options #

###############

ifdef(`confAUTO_REBUILD',

`errprint(WARNING: `confAUTO_REBUILD' is no longer valid.

There was a potential for a denial of service attack if this is set.

)')dnl

# strip message body to 7 bits on input?

_OPTION(SevenBitInput, `confSEVEN_BIT_INPUT', `False')

# 8-bit data handling

_OPTION(EightBitMode, `confEIGHT_BIT_HANDLING', `pass8')

# wait for alias file rebuild (default units: minutes)

_OPTION(AliasWait, `confALIAS_WAIT', `5m')

# location of alias file

_OPTION(AliasFile, `ALIAS_FILE', `MAIL_SETTINGS_DIR`'aliases')

# minimum number of free blocks on filesystem

_OPTION(MinFreeBlocks, `confMIN_FREE_BLOCKS', `100')

# maximum message size

_OPTION(MaxMessageSize, `confMAX_MESSAGE_SIZE', `0')

# substitution for space (blank) characters

_OPTION(BlankSub, `confBLANK_SUB', `_')

# avoid connecting to "expensive" mailers on initial submission?

_OPTION(HoldExpensive, `confCON_EXPENSIVE', `False')

# checkpoint queue runs after every N successful deliveries

_OPTION(CheckpointInterval, `confCHECKPOINT_INTERVAL', `10')

# default delivery mode

_OPTION(DeliveryMode, `confDELIVERY_MODE', `background')

# error message header/file

_OPTION(ErrorHeader, `confERROR_MESSAGE', `MAIL_SETTINGS_DIR`'error-header')

# error mode

_OPTION(ErrorMode, `confERROR_MODE', `print')

# save Unix-style "From_" lines at top of header?

_OPTION(SaveFromLine, `confSAVE_FROM_LINES', `False')

# queue file mode (qf files)

_OPTION(QueueFileMode, `confQUEUE_FILE_MODE', `0600')

# temporary file mode

_OPTION(TempFileMode, `confTEMP_FILE_MODE', `0600')

# match recipients against GECOS field?

_OPTION(MatchGECOS, `confMATCH_GECOS', `False')

# maximum hop count

_OPTION(MaxHopCount, `confMAX_HOP', `25')

# location of help file

O HelpFile=ifdef(`HELP_FILE', HELP_FILE, `MAIL_SETTINGS_DIR`'helpfile')

# ignore dots as terminators in incoming messages?

_OPTION(IgnoreDots, `confIGNORE_DOTS', `False')

# name resolver options

_OPTION(ResolverOptions, `confBIND_OPTS', `+AAONLY')

# deliver MIME-encapsulated error messages?

_OPTION(SendMimeErrors, `confMIME_FORMAT_ERRORS', `True')

# Forward file search path

_OPTION(ForwardPath, `confFORWARD_PATH', `/var/forward/$u:$z/.forward.$w:$z/.forward')

# open connection cache size

_OPTION(ConnectionCacheSize, `confMCI_CACHE_SIZE', `2')

# open connection cache timeout

_OPTION(ConnectionCacheTimeout, `confMCI_CACHE_TIMEOUT', `5m')

# persistent host status directory

_OPTION(HostStatusDirectory, `confHOST_STATUS_DIRECTORY', `.hoststat')

# single thread deliveries (requires HostStatusDirectory)?

_OPTION(SingleThreadDelivery, `confSINGLE_THREAD_DELIVERY', `False')

# use Errors-To: header?

_OPTION(UseErrorsTo, `confUSE_ERRORS_TO', `False')

# log level

_OPTION(LogLevel, `confLOG_LEVEL', `10')

# send to me too, even in an alias expansion?

_OPTION(MeToo, `confME_TOO', `True')

# verify RHS in newaliases?

_OPTION(CheckAliases, `confCHECK_ALIASES', `False')

# default messages to old style headers if no special punctuation?

_OPTION(OldStyleHeaders, `confOLD_STYLE_HEADERS', `False')

# SMTP daemon options

ifelse(defn(`confDAEMON_OPTIONS'), `', `dnl',

`errprint(WARNING: `confDAEMON_OPTIONS' is no longer valid.

Use `DAEMON_OPTIONS()'; see cf/README.

)'dnl

`DAEMON_OPTIONS(`confDAEMON_OPTIONS')')

ifelse(defn(`_DPO_'), `',

`ifdef(`_NETINET6_', `O DaemonPortOptions=Name=MTA-v4, Family=inet

O DaemonPortOptions=Name=MTA-v6, Family=inet6',`O DaemonPortOptions=Name=MTA')', `_DPO_')

ifdef(`_NO_MSA_', `dnl', `O DaemonPortOptions=Port=587, Name=MSA, M=E')

# SMTP client options

ifelse(defn(`confCLIENT_OPTIONS'), `', `dnl',

`errprint(WARNING: `confCLIENT_OPTIONS' is no longer valid. See cf/README for more information.

)'dnl

`CLIENT_OPTIONS(`confCLIENT_OPTIONS')')

ifelse(defn(`_CPO_'), `',

`#O ClientPortOptions=Family=inet, Address=0.0.0.0', `_CPO_')

# Modifiers to `define' {daemon_flags} for direct submissions

_OPTION(DirectSubmissionModifiers, `confDIRECT_SUBMISSION_MODIFIERS', `')

# Use as mail submission program? See sendmail/SECURITY

_OPTION(UseMSP, `confUSE_MSP', `')

# privacy flags

_OPTION(PrivacyOptions, `confPRIVACY_FLAGS', `authwarnings')

# who (if anyone) should get extra copies of error messages

_OPTION(PostmasterCopy, `confCOPY_ERRORS_TO', `Postmaster')

# slope of queue-only function

_OPTION(QueueFactor, `confQUEUE_FACTOR', `600000')

# limit on number of concurrent queue runners

_OPTION(MaxQueueChildren, `confMAX_QUEUE_CHILDREN', `')

# maximum number of queue-runners per queue-grouping with multiple queues

_OPTION(MaxRunnersPerQueue, `confMAX_RUNNERS_PER_QUEUE', `1')

# priority of queue runners (nice(3))

_OPTION(NiceQueueRun, `confNICE_QUEUE_RUN', `')

# shall we sort the queue by hostname first?

_OPTION(QueueSortOrder, `confQUEUE_SORT_ORDER', `priority')

# minimum time in queue before retry

_OPTION(MinQueueAge, `confMIN_QUEUE_AGE', `30m')

# how many jobs can you process in the queue?

_OPTION(MaxQueueRunSize, `confMAX_QUEUE_RUN_SIZE', `0')

# perform initial split of envelope without checking MX records

_OPTION(FastSplit, `confFAST_SPLIT', `1')

# queue directory

O QueueDirectory=ifdef(`QUEUE_DIR', QUEUE_DIR, `/var/spool/mqueue')

# key for shared memory; 0 to turn off, -1 to auto-select

_OPTION(SharedMemoryKey, `confSHARED_MEMORY_KEY', `0')

# file to store auto-selected key for shared memory (SharedMemoryKey = -1)

_OPTION(SharedMemoryKeyFile, `confSHARED_MEMORY_KEY_FILE', `')

# timeouts (many of these)

_OPTION(Timeout.initial, `confTO_INITIAL', `5m')

_OPTION(Timeout.connect, `confTO_CONNECT', `5m')

_OPTION(Timeout.aconnect, `confTO_ACONNECT', `0s')

_OPTION(Timeout.iconnect, `confTO_ICONNECT', `5m')

_OPTION(Timeout.helo, `confTO_HELO', `5m')

_OPTION(Timeout.mail, `confTO_MAIL', `10m')

_OPTION(Timeout.rcpt, `confTO_RCPT', `1h')

_OPTION(Timeout.datainit, `confTO_DATAINIT', `5m')

_OPTION(Timeout.datablock, `confTO_DATABLOCK', `1h')

_OPTION(Timeout.datafinal, `confTO_DATAFINAL', `1h')

_OPTION(Timeout.rset, `confTO_RSET', `5m')

_OPTION(Timeout.quit, `confTO_QUIT', `2m')

_OPTION(Timeout.misc, `confTO_MISC', `2m')

_OPTION(Timeout.command, `confTO_COMMAND', `1h')

_OPTION(Timeout.ident, `confTO_IDENT', `5s')

_OPTION(Timeout.fileopen, `confTO_FILEOPEN', `60s')

_OPTION(Timeout.control, `confTO_CONTROL', `2m')

_OPTION(Timeout.queuereturn, `confTO_QUEUERETURN', `5d')

_OPTION(Timeout.queuereturn.normal, `confTO_QUEUERETURN_NORMAL', `5d')

_OPTION(Timeout.queuereturn.urgent, `confTO_QUEUERETURN_URGENT', `2d')

_OPTION(Timeout.queuereturn.non-urgent, `confTO_QUEUERETURN_NONURGENT', `7d')

_OPTION(Timeout.queuereturn.dsn, `confTO_QUEUERETURN_DSN', `5d')

_OPTION(Timeout.queuewarn, `confTO_QUEUEWARN', `4h')

_OPTION(Timeout.queuewarn.normal, `confTO_QUEUEWARN_NORMAL', `4h')

_OPTION(Timeout.queuewarn.urgent, `confTO_QUEUEWARN_URGENT', `1h')

_OPTION(Timeout.queuewarn.non-urgent, `confTO_QUEUEWARN_NONURGENT', `12h')

_OPTION(Timeout.queuewarn.dsn, `confTO_QUEUEWARN_DSN', `4h')

_OPTION(Timeout.hoststatus, `confTO_HOSTSTATUS', `30m')

_OPTION(Timeout.resolver.retrans, `confTO_RESOLVER_RETRANS', `5s')

_OPTION(Timeout.resolver.retrans.first, `confTO_RESOLVER_RETRANS_FIRST', `5s')

_OPTION(Timeout.resolver.retrans.normal, `confTO_RESOLVER_RETRANS_NORMAL', `5s')

_OPTION(Timeout.resolver.retry, `confTO_RESOLVER_RETRY', `4')

_OPTION(Timeout.resolver.retry.first, `confTO_RESOLVER_RETRY_FIRST', `4')

_OPTION(Timeout.resolver.retry.normal, `confTO_RESOLVER_RETRY_NORMAL', `4')

_OPTION(Timeout.lhlo, `confTO_LHLO', `2m')

_OPTION(Timeout.auth, `confTO_AUTH', `10m')

_OPTION(Timeout.starttls, `confTO_STARTTLS', `1h')

# time for DeliverBy; extension disabled if less than 0

_OPTION(DeliverByMin, `confDELIVER_BY_MIN', `0')

# should we not prune routes in route-addr syntax addresses?

_OPTION(DontPruneRoutes, `confDONT_PRUNE_ROUTES', `False')

# queue up everything before forking?

_OPTION(SuperSafe, `confSAFE_QUEUE', `True')

# status file

_OPTION(StatusFile, `STATUS_FILE')

# time zone handling:

# if undefined, use system default

# if defined but null, use TZ envariable passed in

# if defined and non-null, use that info

ifelse(confTIME_ZONE, `USE_SYSTEM', `#O TimeZoneSpec=',

confTIME_ZONE, `USE_TZ', `O TimeZoneSpec=',

`O TimeZoneSpec=confTIME_ZONE')

# default UID (can be username or userid:groupid)

_OPTION(DefaultUser, `confDEF_USER_ID', `mailnull')

# list of locations of user database file (null means no lookup)

_OPTION(UserDatabaseSpec, `confUSERDB_SPEC', `MAIL_SETTINGS_DIR`'userdb')

# fallback MX host

_OPTION(FallbackMXhost, `confFALLBACK_MX', `fall.back.host.net')

# fallback smart host

_OPTION(FallbackSmartHost, `confFALLBACK_SMARTHOST', `fall.back.host.net')

# if we are the best MX host for a site, try it directly instead of config err

_OPTION(TryNullMXList, `confTRY_NULL_MX_LIST', `False')

# load average at which we just queue messages

_OPTION(QueueLA, `confQUEUE_LA', `8')

# load average at which we refuse connections

_OPTION(RefuseLA, `confREFUSE_LA', `12')

# log interval when refusing connections for this long

_OPTION(RejectLogInterval, `confREJECT_LOG_INTERVAL', `3h')

# load average at which we delay connections; 0 means no limit

_OPTION(DelayLA, `confDELAY_LA', `0')

# maximum number of children we allow at one time

_OPTION(MaxDaemonChildren, `confMAX_DAEMON_CHILDREN', `0')

# maximum number of new connections per second

_OPTION(ConnectionRateThrottle, `confCONNECTION_RATE_THROTTLE', `0')

# Width of the window

_OPTION(ConnectionRateWindowSize, `confCONNECTION_RATE_WINDOW_SIZE', `60s')

# work recipient factor

_OPTION(RecipientFactor, `confWORK_RECIPIENT_FACTOR', `30000')

# deliver each queued job in a separate process?

_OPTION(ForkEachJob, `confSEPARATE_PROC', `False')

# work class factor

_OPTION(ClassFactor, `confWORK_CLASS_FACTOR', `1800')

# work time factor

_OPTION(RetryFactor, `confWORK_TIME_FACTOR', `90000')

# default character set

_OPTION(DefaultCharSet, `confDEF_CHAR_SET', `unknown-8bit')

# service switch file (name hardwired on Solaris, Ultrix, OSF/1, others)

_OPTION(ServiceSwitchFile, `confSERVICE_SWITCH_FILE', `MAIL_SETTINGS_DIR`'service.switch')

# hosts file (normally /etc/hosts)

_OPTION(HostsFile, `confHOSTS_FILE', `/etc/hosts')

# dialup line delay on connection failure

_OPTION(DialDelay, `confDIAL_DELAY', `0s')

# action to take if there are no recipients in the message

_OPTION(NoRecipientAction, `confNO_RCPT_ACTION', `none')

# chrooted environment for writing to files

_OPTION(SafeFileEnvironment, `confSAFE_FILE_ENV', `')

# are colons OK in addresses?

_OPTION(ColonOkInAddr, `confCOLON_OK_IN_ADDR', `True')

# shall I avoid expanding CNAMEs (violates protocols)?

_OPTION(DontExpandCnames, `confDONT_EXPAND_CNAMES', `False')

# SMTP initial login message (old $e macro)

_OPTION(SmtpGreetingMessage, `confSMTP_LOGIN_MSG', `$j Sendmail $v ready at $b')

# UNIX initial From header format (old $l macro)

_OPTION(UnixFromLine, `confFROM_LINE', `From $g $d')

# From: lines that have embedded newlines are unwrapped onto one line

_OPTION(SingleLineFromHeader, `confSINGLE_LINE_FROM_HEADER', `False')

# Allow HELO SMTP command that does not `include' a host name

_OPTION(AllowBogusHELO, `confALLOW_BOGUS_HELO', `False')

# Characters to be quoted in a full name phrase (@,;:\()[] are automatic)

_OPTION(MustQuoteChars, `confMUST_QUOTE_CHARS', `.')

# delimiter (operator) characters (old $o macro)

_OPTION(OperatorChars, `confOPERATORS', `.:@[]')

# shall I avoid calling initgroups(3) because of high NIS costs?

_OPTION(DontInitGroups, `confDONT_INIT_GROUPS', `False')

# are group-writable `:include:' and .forward files (un)trustworthy?

# True (the default) means they are not trustworthy.

_OPTION(UnsafeGroupWrites, `confUNSAFE_GROUP_WRITES', `True')

ifdef(`confUNSAFE_GROUP_WRITES',

`errprint(`WARNING: confUNSAFE_GROUP_WRITES is deprecated; use confDONT_BLAME_SENDMAIL.

')')

# where do errors that occur when sending errors get sent?

_OPTION(DoubleBounceAddress, `confDOUBLE_BOUNCE_ADDRESS', `postmaster')

# issue temporary errors (4xy) instead of permanent errors (5xy)?

_OPTION(SoftBounce, `confSOFT_BOUNCE', `False')

# where to save bounces if all else fails

_OPTION(DeadLetterDrop, `confDEAD_LETTER_DROP', `/var/tmp/dead.letter')

# what user id do we assume for the majority of the processing?

_OPTION(RunAsUser, `confRUN_AS_USER', `sendmail')

# maximum number of recipients per SMTP envelope

_OPTION(MaxRecipientsPerMessage, `confMAX_RCPTS_PER_MESSAGE', `0')

# limit the rate recipients per SMTP envelope are accepted

# once the threshold number of recipients have been rejected

_OPTION(BadRcptThrottle, `confBAD_RCPT_THROTTLE', `0')

# shall we get local names from our installed interfaces?

_OPTION(DontProbeInterfaces, `confDONT_PROBE_INTERFACES', `False')

# Return-Receipt-To: header implies DSN request

_OPTION(RrtImpliesDsn, `confRRT_IMPLIES_DSN', `False')

# override connection address (for testing)

_OPTION(ConnectOnlyTo, `confCONNECT_ONLY_TO', `0.0.0.0')

# Trusted user for file ownership and starting the daemon

_OPTION(TrustedUser, `confTRUSTED_USER', `root')

# Control socket for daemon management

_OPTION(ControlSocketName, `confCONTROL_SOCKET_NAME', `/var/spool/mqueue/.control')

# Maximum MIME header length to protect MUAs

_OPTION(MaxMimeHeaderLength, `confMAX_MIME_HEADER_LENGTH', `2048/1024')

# Maximum length of the sum of all headers

_OPTION(MaxHeadersLength, `confMAX_HEADERS_LENGTH', `32768')

# Maximum depth of alias recursion

_OPTION(MaxAliasRecursion, `confMAX_ALIAS_RECURSION', `10')

# location of pid file

_OPTION(PidFile, `confPID_FILE', `/var/run/sendmail.pid')

# Prefix string for the process title shown on 'ps' listings

_OPTION(ProcessTitlePrefix, `confPROCESS_TITLE_PREFIX', `prefix')

# Data file (df) memory-buffer file maximum size

_OPTION(DataFileBufferSize, `confDF_BUFFER_SIZE', `4096')

# Transcript file (xf) memory-buffer file maximum size

_OPTION(XscriptFileBufferSize, `confXF_BUFFER_SIZE', `4096')

# lookup type to find information about local mailboxes

_OPTION(MailboxDatabase, `confMAILBOX_DATABASE', `pw')

# override compile time flag REQUIRES_DIR_FSYNC

_OPTION(RequiresDirfsync, `confREQUIRES_DIR_FSYNC', `true')

# list of authentication mechanisms

_OPTION(AuthMechanisms, `confAUTH_MECHANISMS', `EXTERNAL GSSAPI KERBEROS_V4 DIGEST-MD5 CRAM-MD5')

# Authentication realm

_OPTION(AuthRealm, `confAUTH_REALM', `')

# default authentication information for outgoing connections

_OPTION(DefaultAuthInfo, `confDEF_AUTH_INFO', `MAIL_SETTINGS_DIR`'default-auth-info')

# SMTP AUTH flags

_OPTION(AuthOptions, `confAUTH_OPTIONS', `')

# SMTP AUTH maximum encryption strength

_OPTION(AuthMaxBits, `confAUTH_MAX_BITS', `')

# SMTP STARTTLS server options

_OPTION(TLSSrvOptions, `confTLS_SRV_OPTIONS', `')

# Input mail filters

_OPTION(InputMailFilters, `confINPUT_MAIL_FILTERS', `')

ifelse(len(X`'_MAIL_FILTERS_DEF), `1', `dnl', `dnl

# Milter options

_OPTION(Milter.LogLevel, `confMILTER_LOG_LEVEL', `')

_OPTION(Milter.macros.connect, `confMILTER_MACROS_CONNECT', `')

_OPTION(Milter.macros.helo, `confMILTER_MACROS_HELO', `')

_OPTION(Milter.macros.envfrom, `confMILTER_MACROS_ENVFROM', `')

_OPTION(Milter.macros.envrcpt, `confMILTER_MACROS_ENVRCPT', `')

_OPTION(Milter.macros.eom, `confMILTER_MACROS_EOM', `')

_OPTION(Milter.macros.eoh, `confMILTER_MACROS_EOH', `')

_OPTION(Milter.macros.data, `confMILTER_MACROS_DATA', `')')

# CA directory

_OPTION(CACertPath, `confCACERT_PATH', `')

# CA file

_OPTION(CACertFile, `confCACERT', `')

# Server Cert

_OPTION(ServerCertFile, `confSERVER_CERT', `')

# Server private key

_OPTION(ServerKeyFile, `confSERVER_KEY', `')

# Client Cert

_OPTION(ClientCertFile, `confCLIENT_CERT', `')

# Client private key

_OPTION(ClientKeyFile, `confCLIENT_KEY', `')

# File containing certificate revocation lists

_OPTION(CRLFile, `confCRL', `')

# DHParameters (only required if DSA/DH is used)

_OPTION(DHParameters, `confDH_PARAMETERS', `')

# Random data source (required for systems without /dev/urandom under OpenSSL)

_OPTION(RandFile, `confRAND_FILE', `')

# Maximum number of "useless" commands before slowing down

_OPTION(MaxNOOPCommands, `confMAX_NOOP_COMMANDS', `20')

# Name to use for EHLO (defaults to $j)

_OPTION(HeloName, `confHELO_NAME')

############################

`# QUEUE GROUP DEFINITIONS #'

############################

_QUEUE_GROUP_

###########################

# Message precedences #

###########################

Pfirst-class=0

Pspecial-delivery=100

Plist=-30

Pbulk=-60

Pjunk=-100

#####################

# Trusted users #

#####################

# this is equivalent to setting class "t"

ifdef(`_USE_CT_FILE_', `', `#')Ft`'ifdef(`confCT_FILE', confCT_FILE, `MAIL_SETTINGS_DIR`'trusted-users')

Troot

Tdaemon

ifdef(`_NO_UUCP_', `dnl', `Tuucp')

ifdef(`confTRUSTED_USERS', `T`'confTRUSTED_USERS', `dnl')

#########################

# Format of headers #

#########################

ifdef(`confFROM_HEADER',, `define(`confFROM_HEADER', `$?x$x <$g>$|$g$.')')dnl

ifdef(`confMESSAGEID_HEADER',, `define(`confMESSAGEID_HEADER', `<$t.$i@$j>')')dnl

H?P?Return-Path: <$g>

HReceived: confRECEIVED_HEADER

H?D?Resent-Date: $a

H?D?Date: $a

H?F?Resent-From: confFROM_HEADER

H?F?From: confFROM_HEADER

H?x?Full-Name: $x

# HPosted-Date: $a

# H?l?Received-Date: $b

H?M?Resent-Message-Id: confMESSAGEID_HEADER

H?M?Message-Id: confMESSAGEID_HEADER

#

######################################################################

######################################################################

#####

##### REWRITING RULES

#####

######################################################################

######################################################################

############################################

### Ruleset 3 -- Name Canonicalization ###

############################################

Scanonify=3

# handle null input (translate to <@> special case)

R$@ $@ <@>

# strip group: syntax (not inside angle brackets!) and trailing semicolon

R$* $: $1 <@> mark addresses

R$* < $* > $* <@> $: $1 < $2 > $3 unmark <addr>

R@ $* <@> $: @ $1 unmark @host:...

R$* [ IPv6 : $+ ] <@> $: $1 [ IPv6 : $2 ] unmark IPv6 addr

R$* :: $* <@> $: $1 :: $2 unmark node::addr

R:`include': $* <@> $: :`include': $1 unmark :`include':...

R$* : $* [ $* ] $: $1 : $2 [ $3 ] <@> remark if leading colon

R$* : $* <@> $: $2 strip colon if marked

R$* <@> $: $1 unmark

R$* ; $1 strip trailing semi

R$* < $+ :; > $* $@ $2 :; <@> catch <list:;>

R$* < $* ; > $1 < $2 > bogus bracketed semi

# null input now results from list:; syntax

R$@ $@ :; <@>

# strip angle brackets -- note RFC733 heuristic to get innermost item

R$* $: < $1 > housekeeping <>

R$+ < $* > < $2 > strip excess on left

R< $* > $+ < $1 > strip excess on right

R<> $@ < @ > MAIL FROM:<> case

R< $+ > $: $1 remove housekeeping <>

ifdef(`_USE_DEPRECATED_ROUTE_ADDR_',`dnl

# make sure <@a,@b,@c:user@d> syntax is easy to parse -- undone later

R@ $+ , $+ @ $1 : $2 change all "," to ":"

# localize and dispose of route-based addresses

dnl XXX: IPv6 colon conflict

ifdef(`NO_NETINET6', `dnl',

`R@ [$+] : $+ $@ $>Canonify2 < @ [$1] > : $2 handle <route-addr>')

R@ $+ : $+ $@ $>Canonify2 < @$1 > : $2 handle <route-addr>

dnl',`dnl

# strip route address <@a,@b,@c:user@d> -> <user@d>

R@ $+ , $+ $2

ifdef(`NO_NETINET6', `dnl',

`R@ [ $* ] : $+ $2')

R@ $+ : $+ $2

dnl')

# find focus for list syntax

R $+ : $* ; @ $+ $@ $>Canonify2 $1 : $2 ; < @ $3 > list syntax

R $+ : $* ; $@ $1 : $2; list syntax

# find focus for @ syntax addresses

R$+ @ $+ $: $1 < @ $2 > focus on domain

R$+ < $+ @ $+ > $1 $2 < @ $3 > move gaze right

R$+ < @ $+ > $@ $>Canonify2 $1 < @ $2 > already canonical

dnl This is flagged as an error in S0; no need to silently fix it here.

dnl # do some sanity checking

dnl R$* < @ $~[ $* : $* > $* $1 < @ $2 $3 > $4 nix colons in addrs

ifdef(`_NO_UUCP_', `dnl',

`# convert old-style addresses to a domain-based address

R$- ! $+ $@ $>Canonify2 $2 < @ $1 .UUCP > resolve uucp names

R$+ . $- ! $+ $@ $>Canonify2 $3 < @ $1 . $2 > domain uucps

R$+ ! $+ $@ $>Canonify2 $2 < @ $1 .UUCP > uucp subdomains

')

ifdef(`_USE_DECNET_SYNTAX_',

`# convert node::user addresses into a domain-based address

R$- :: $+ $@ $>Canonify2 $2 < @ $1 .DECNET > resolve DECnet names

R$- . $- :: $+ $@ $>Canonify2 $3 < @ $1.$2 .DECNET > numeric DECnet addr

',

`dnl')

# if we have % signs, take the rightmost one

R$* % $* $1 @ $2 First make them all @s.

R$* @ $* @ $* $1 % $2 @ $3 Undo all but the last.

R$* @ $* $@ $>Canonify2 $1 < @ $2 > Insert < > and finish

# else we must be a local name

R$* $@ $>Canonify2 $1

################################################

### Ruleset 96 -- bottom half of ruleset 3 ###

################################################

SCanonify2=96

# handle special cases for local names

R$* < @ localhost > $* $: $1 < @ $j . > $2 no domain at all

R$* < @ localhost . $m > $* $: $1 < @ $j . > $2 local domain

ifdef(`_NO_UUCP_', `dnl',

`R$* < @ localhost . UUCP > $* $: $1 < @ $j . > $2 .UUCP domain')

# check for IPv4/IPv6 domain literal

R$* < @ [ $+ ] > $* $: $1 < @@ [ $2 ] > $3 mark [addr]

R$* < @@ $=w > $* $: $1 < @ $j . > $3 self-literal

R$* < @@ $+ > $* $@ $1 < @ $2 > $3 canon IP addr

ifdef(`_DOMAIN_TABLE_', `dnl

# look up domains in the domain table

R$* < @ $+ > $* $: $1 < @ $(domaintable $2 $) > $3', `dnl')

undivert(2)dnl LOCAL_RULE_3

ifdef(`_BITDOMAIN_TABLE_', `dnl

# handle BITNET mapping

R$* < @ $+ .BITNET > $* $: $1 < @ $(bitdomain $2 $: $2.BITNET $) > $3', `dnl')

ifdef(`_UUDOMAIN_TABLE_', `dnl

# handle UUCP mapping

R$* < @ $+ .UUCP > $* $: $1 < @ $(uudomain $2 $: $2.UUCP $) > $3', `dnl')

ifdef(`_NO_UUCP_', `dnl',

`ifdef(`UUCP_RELAY',

`# pass UUCP addresses straight through

R$* < @ $+ . UUCP > $* $@ $1 < @ $2 . UUCP . > $3',

`# if really UUCP, handle it immediately

ifdef(`_CLASS_U_',

`R$* < @ $=U . UUCP > $* $@ $1 < @ $2 . UUCP . > $3', `dnl')

ifdef(`_CLASS_V_',

`R$* < @ $=V . UUCP > $* $@ $1 < @ $2 . UUCP . > $3', `dnl')

ifdef(`_CLASS_W_',

`R$* < @ $=W . UUCP > $* $@ $1 < @ $2 . UUCP . > $3', `dnl')

ifdef(`_CLASS_X_',

`R$* < @ $=X . UUCP > $* $@ $1 < @ $2 . UUCP . > $3', `dnl')

ifdef(`_CLASS_Y_',

`R$* < @ $=Y . UUCP > $* $@ $1 < @ $2 . UUCP . > $3', `dnl')

ifdef(`_NO_CANONIFY_', `dnl', `dnl

# try UUCP traffic as a local address

R$* < @ $+ . UUCP > $* $: $1 < @ $[ $2 $] . UUCP . > $3

R$* < @ $+ . . UUCP . > $* $@ $1 < @ $2 . > $3')

')')

# hostnames ending in class P are always canonical

R$* < @ $* $=P > $* $: $1 < @ $2 $3 . > $4

dnl apply the next rule only for hostnames not in class P

dnl this even works for phrases in class P since . is in class P

dnl which daemon flags are set?

R$* < @ $* $~P > $* $: $&{daemon_flags} $| $1 < @ $2 $3 > $4

dnl the other rules in this section only apply if the hostname

dnl does not end in class P hence no further checks are done here

dnl if this ever changes make sure the lookups are "protected" again!

ifdef(`_NO_CANONIFY_', `dnl

dnl do not canonify unless:

dnl domain ends in class {Canonify} (this does not work if the intersection

dnl with class P is non-empty)

dnl or {daemon_flags} has c set

# pass to name server to make hostname canonical if in class {Canonify}

R$* $| $* < @ $* $={Canonify} > $* $: $2 < @ $[ $3 $4 $] > $5

# pass to name server to make hostname canonical if requested

R$* c $* $| $* < @ $* > $* $: $3 < @ $[ $4 $] > $5

dnl trailing dot? -> do not apply _CANONIFY_HOSTS_

R$* $| $* < @ $+ . > $* $: $2 < @ $3 . > $4

# add a trailing dot to qualified hostnames so other rules will work

R$* $| $* < @ $+.$+ > $* $: $2 < @ $3.$4 . > $5

ifdef(`_CANONIFY_HOSTS_', `dnl

dnl this should only apply to unqualified hostnames

dnl but if a valid character inside an unqualified hostname is an OperatorChar

dnl then $- does not work.

# lookup unqualified hostnames

R$* $| $* < @ $* > $* $: $2 < @ $[ $3 $] > $4', `dnl')', `dnl

dnl _NO_CANONIFY_ is not set: canonify unless:

dnl {daemon_flags} contains CC (do not canonify)

dnl but add a trailing dot to qualified hostnames so other rules will work

dnl should we do this for every hostname: even unqualified?

R$* CC $* $| $* < @ $+.$+ > $* $: $3 < @ $4.$5 . > $6

R$* CC $* $| $* $: $3

ifdef(`_FFR_NOCANONIFY_HEADERS', `dnl

# do not canonify header addresses

R$* $| $* < @ $* $~P > $* $: $&{addr_type} $| $2 < @ $3 $4 > $5

R$* h $* $| $* < @ $+.$+ > $* $: $3 < @ $4.$5 . > $6

R$* h $* $| $* $: $3', `dnl')

# pass to name server to make hostname canonical

R$* $| $* < @ $* > $* $: $2 < @ $[ $3 $] > $4')

dnl remove {daemon_flags} for other cases

R$* $| $* $: $2

# local host aliases and pseudo-domains are always canonical

R$* < @ $=w > $* $: $1 < @ $2 . > $3

ifdef(`_MASQUERADE_ENTIRE_DOMAIN_',

`R$* < @ $* $=M > $* $: $1 < @ $2 $3 . > $4',

`R$* < @ $=M > $* $: $1 < @ $2 . > $3')

ifdef(`_VIRTUSER_TABLE_', `dnl

dnl virtual hosts are also canonical

ifdef(`_VIRTUSER_ENTIRE_DOMAIN_',

`R$* < @ $* $={VirtHost} > $* $: $1 < @ $2 $3 . > $4',

`R$* < @ $={VirtHost} > $* $: $1 < @ $2 . > $3')',

`dnl')

ifdef(`_GENERICS_TABLE_', `dnl

dnl hosts for genericstable are also canonical

ifdef(`_GENERICS_ENTIRE_DOMAIN_',

`R$* < @ $* $=G > $* $: $1 < @ $2 $3 . > $4',

`R$* < @ $=G > $* $: $1 < @ $2 . > $3')',

`dnl')

dnl remove superfluous dots (maybe repeatedly) which may have been added

dnl by one of the rules before

R$* < @ $* . . > $* $1 < @ $2 . > $3

##################################################

### Ruleset 4 -- Final Output Post-rewriting ###

##################################################

Sfinal=4

R$+ :; <@> $@ $1 : handle <list:;>

R$* <@> $@ handle <> and list:;

# strip trailing dot off possibly canonical name

R$* < @ $+ . > $* $1 < @ $2 > $3

# eliminate internal code

R$* < @ *LOCAL* > $* $1 < @ $j > $2

# externalize local domain info

R$* < $+ > $* $1 $2 $3 defocus

R@ $+ : @ $+ : $+ @ $1 , @ $2 : $3 <route-addr> canonical

R@ $* $@ @ $1 ... and exit

ifdef(`_NO_UUCP_', `dnl',

`# UUCP must always be presented in old form

R$+ @ $- . UUCP $2!$1 u@h.UUCP => h!u')

ifdef(`_USE_DECNET_SYNTAX_',

`# put DECnet back in :: form

R$+ @ $+ . DECNET $2 :: $1 u@h.DECNET => h::u',

`dnl')

# delete duplicate local names

R$+ % $=w @ $=w $1 @ $2 u%host@host => u@host

##############################################################

### Ruleset 97 -- recanonicalize and call ruleset zero ###

### (used for recursive calls) ###

##############################################################

SRecurse=97

R$* $: $>canonify $1

R$* $@ $>parse $1

######################################

### Ruleset 0 -- Parse Address ###

######################################

Sparse=0

R$* $: $>Parse0 $1 initial parsing

R<@> $#_LOCAL_ $: <@> special case error msgs

R$* $: $>ParseLocal $1 handle local hacks

R$* $: $>Parse1 $1 final parsing

#

# Parse0 -- do initial syntax checking and eliminate local addresses.

# This should either return with the (possibly modified) input

# or return with a #error mailer. It should not return with a

# #mailer other than the #error mailer.

#

SParse0

R<@> $@ <@> special case error msgs

R$* : $* ; <@> $#error $@ 5.1.3 $: "_CODE553 List:; syntax illegal for recipient addresses"

R@ <@ $* > < @ $1 > catch "@@host" bogosity

R<@ $+> $#error $@ 5.1.3 $: "_CODE553 User address required"

R$+ <@> $#error $@ 5.1.3 $: "_CODE553 Hostname required"

R$* $: <> $1

dnl allow tricks like [host1]:[host2]

R<> $* < @ [ $* ] : $+ > $* $1 < @ [ $2 ] : $3 > $4

R<> $* < @ [ $* ] , $+ > $* $1 < @ [ $2 ] , $3 > $4

dnl but no a@[b]c

R<> $* < @ [ $* ] $+ > $* $#error $@ 5.1.2 $: "_CODE553 Invalid address"

R<> $* < @ [ $+ ] > $* $1 < @ [ $2 ] > $3

R<> $* <$* : $* > $* $#error $@ 5.1.3 $: "_CODE553 Colon illegal in host name part"

R<> $* $1

R$* < @ . $* > $* $#error $@ 5.1.2 $: "_CODE553 Invalid host name"

R$* < @ $* .. $* > $* $#error $@ 5.1.2 $: "_CODE553 Invalid host name"

dnl no a@b@

R$* < @ $* @ > $* $#error $@ 5.1.2 $: "_CODE553 Invalid route address"

dnl no a@b@c

R$* @ $* < @ $* > $* $#error $@ 5.1.3 $: "_CODE553 Invalid route address"

dnl comma only allowed before @; this check is not complete

R$* , $~O $* $#error $@ 5.1.3 $: "_CODE553 Invalid route address"

ifdef(`_STRICT_RFC821_', `# more RFC 821 checks

R$* . < @ $* > $* $#error $@ 5.1.2 $: "_CODE553 Local part must not end with a dot"

R. $* < @ $* > $* $#error $@ 5.1.2 $: "_CODE553 Local part must not begin with a dot"

dnl', `dnl')

# now delete the local info -- note $=O to find characters that cause forwarding

R$* < @ > $* $@ $>Parse0 $>canonify $1 user@ => user

R< @ $=w . > : $* $@ $>Parse0 $>canonify $2 @here:... -> ...

R$- < @ $=w . > $: $(dequote $1 $) < @ $2 . > dequote "foo"@here

R< @ $+ > $#error $@ 5.1.3 $: "_CODE553 User address required"

R$* $=O $* < @ $=w . > $@ $>Parse0 $>canonify $1 $2 $3 ...@here -> ...

R$- $: $(dequote $1 $) < @ *LOCAL* > dequote "foo"

R< @ *LOCAL* > $#error $@ 5.1.3 $: "_CODE553 User address required"

R$* $=O $* < @ *LOCAL* >

$@ $>Parse0 $>canonify $1 $2 $3 ...@*LOCAL* -> ...

R$* < @ *LOCAL* > $: $1

#

# Parse1 -- the bottom half of ruleset 0.

#

SParse1

ifdef(`_LDAP_ROUTING_', `dnl

# handle LDAP routing for hosts in $={LDAPRoute}

R$+ < @ $={LDAPRoute} . > $: $>LDAPExpand <$1 < @ $2 . >> <$1 @ $2> <>

R$+ < @ $={LDAPRouteEquiv} . > $: $>LDAPExpand <$1 < @ $2 . >> <$1 @ $M> <>',

`dnl')

ifdef(`_MAILER_smtp_',

`# handle numeric address spec

dnl there is no check whether this is really an IP number

R$* < @ [ $+ ] > $* $: $>ParseLocal $1 < @ [ $2 ] > $3 numeric internet spec

R$* < @ [ $+ ] > $* $: $1 < @ [ $2 ] : $S > $3 Add smart host to path

R$* < @ [ $+ ] : > $* $#_SMTP_ $@ [$2] $: $1 < @ [$2] > $3 no smarthost: send

R$* < @ [ $+ ] : $- : $*> $* $#$3 $@ $4 $: $1 < @ [$2] > $5 smarthost with mailer

R$* < @ [ $+ ] : $+ > $* $#_SMTP_ $@ $3 $: $1 < @ [$2] > $4 smarthost without mailer',

`dnl')

ifdef(`_VIRTUSER_TABLE_', `dnl

# handle virtual users

ifdef(`_VIRTUSER_STOP_ONE_LEVEL_RECURSION_',`dnl

dnl this is not a documented option

dnl it stops looping in virtusertable mapping if input and output

dnl are identical, i.e., if address A is mapped to A.

dnl it does not deal with multi-level recursion

# handle full domains in RHS of virtusertable

R$+ < @ $+ > $: $(macro {RecipientAddress} $) $1 < @ $2 >

R$+ < @ $+ > $: <?> $1 < @ $2 > $| $>final $1 < @ $2 >

R<?> $+ $| $+ $: $1 $(macro {RecipientAddress} $@ $2 $)

R<?> $+ $| $* $: $1',

`dnl')

R$+ $: <!> $1 Mark for lookup

dnl input: <!> local<@domain>

ifdef(`_VIRTUSER_ENTIRE_DOMAIN_',

`R<!> $+ < @ $* $={VirtHost} . > $: < $(virtuser $1 @ $2 $3 $@ $1 $: @ $) > $1 < @ $2 $3 . >',

`R<!> $+ < @ $={VirtHost} . > $: < $(virtuser $1 @ $2 $@ $1 $: @ $) > $1 < @ $2 . >')

dnl input: <result-of-lookup | @> local<@domain> | <!> local<@domain>

R<!> $+ < @ $=w . > $: < $(virtuser $1 @ $2 $@ $1 $: @ $) > $1 < @ $2 . >

dnl if <@> local<@domain>: no match but try lookup

dnl user+detail: try user++@domain if detail not empty

R<@> $+ + $+ < @ $* . >

$: < $(virtuser $1 + + @ $3 $@ $1 $@ $2 $@ +$2 $: @ $) > $1 + $2 < @ $3 . >

dnl user+detail: try user+*@domain

R<@> $+ + $* < @ $* . >

$: < $(virtuser $1 + * @ $3 $@ $1 $@ $2 $@ +$2 $: @ $) > $1 + $2 < @ $3 . >

dnl user+detail: try user@domain

R<@> $+ + $* < @ $* . >

$: < $(virtuser $1 @ $3 $@ $1 $@ $2 $@ +$2 $: @ $) > $1 + $2 < @ $3 . >

dnl try default entry: @domain

dnl ++@domain

R<@> $+ + $+ < @ $+ . > $: < $(virtuser + + @ $3 $@ $1 $@ $2 $@ +$2 $: @ $) > $1 + $2 < @ $3 . >

dnl +*@domain

R<@> $+ + $* < @ $+ . > $: < $(virtuser + * @ $3 $@ $1 $@ $2 $@ +$2 $: @ $) > $1 + $2 < @ $3 . >

dnl @domain if +detail exists

dnl if no match, change marker to prevent a second @domain lookup

R<@> $+ + $* < @ $+ . > $: < $(virtuser @ $3 $@ $1 $@ $2 $@ +$2 $: ! $) > $1 + $2 < @ $3 . >

dnl without +detail

R<@> $+ < @ $+ . > $: < $(virtuser @ $2 $@ $1 $: @ $) > $1 < @ $2 . >

dnl no match

R<@> $+ $: $1

dnl remove mark

R<!> $+ $: $1

R< error : $-.$-.$- : $+ > $* $#error $@ $1.$2.$3 $: $4

R< error : $- $+ > $* $#error $@ $(dequote $1 $) $: $2

ifdef(`_VIRTUSER_STOP_ONE_LEVEL_RECURSION_',`dnl

# check virtuser input address against output address, if same, skip recursion

R< $+ > $+ < @ $+ > $: < $1 > $2 < @ $3 > $| $1

# it is the same: stop now

R< $+ > $+ < @ $+ > $| $&{RecipientAddress} $: $>ParseLocal $>Parse0 $>canonify $1

R< $+ > $+ < @ $+ > $| $* $: < $1 > $2 < @ $3 >

dnl', `dnl')

dnl this is not a documented option

dnl it performs no looping at all for virtusertable

ifdef(`_NO_VIRTUSER_RECURSION_',

`R< $+ > $+ < @ $+ > $: $>ParseLocal $>Parse0 $>canonify $1',

`R< $+ > $+ < @ $+ > $: $>Recurse $1')

dnl', `dnl')

# short circuit local delivery so forwarded email works

ifdef(`_MAILER_usenet_', `dnl

R$+ . USENET < @ $=w . > $#usenet $@ usenet $: $1 handle usenet specially', `dnl')

ifdef(`_STICKY_LOCAL_DOMAIN_',

`R$+ < @ $=w . > $: < $H > $1 < @ $2 . > first try hub

R< $+ > $+ < $+ > $>MailerToTriple < $1 > $2 < $3 > yep ....

dnl $H empty (but @$=w.)

R< > $+ + $* < $+ > $#_LOCAL_ $: $1 + $2 plussed name?

R< > $+ < $+ > $#_LOCAL_ $: @ $1 nope, local address',

`R$=L < @ $=w . > $#_LOCAL_ $: @ $1 special local names

R$+ < @ $=w . > $#_LOCAL_ $: $1 regular local name')

ifdef(`_MAILER_TABLE_', `dnl

# not local -- try mailer table lookup

R$* <@ $+ > $* $: < $2 > $1 < @ $2 > $3 extract host name

R< $+ . > $* $: < $1 > $2 strip trailing dot

R< $+ > $* $: < $(mailertable $1 $) > $2 lookup

dnl it is $~[ instead of $- to avoid matches on IPv6 addresses

R< $~[ : $* > $* $>MailerToTriple < $1 : $2 > $3 check -- resolved?

R< $+ > $* $: $>Mailertable <$1> $2 try domain',

`dnl')

undivert(4)dnl UUCP rules from `MAILER(uucp)'

ifdef(`_NO_UUCP_', `dnl',

`# resolve remotely connected UUCP links (if any)

ifdef(`_CLASS_V_',

`R$* < @ $=V . UUCP . > $* $: $>MailerToTriple < $V > $1 <@$2.UUCP.> $3',

`dnl')

ifdef(`_CLASS_W_',

`R$* < @ $=W . UUCP . > $* $: $>MailerToTriple < $W > $1 <@$2.UUCP.> $3',

`dnl')

ifdef(`_CLASS_X_',

`R$* < @ $=X . UUCP . > $* $: $>MailerToTriple < $X > $1 <@$2.UUCP.> $3',

`dnl')')

# resolve fake top level domains by forwarding to other hosts

ifdef(`BITNET_RELAY',

`R$*<@$+.BITNET.>$* $: $>MailerToTriple < $B > $1 <@$2.BITNET.> $3 user@host.BITNET',

`dnl')

ifdef(`DECNET_RELAY',

`R$*<@$+.DECNET.>$* $: $>MailerToTriple < $C > $1 <@$2.DECNET.> $3 user@host.DECNET',

`dnl')

ifdef(`_MAILER_pop_',

`R$+ < @ POP. > $#pop $: $1 user@POP',

`dnl')

ifdef(`_MAILER_fax_',

`R$+ < @ $+ .FAX. > $#fax $@ $2 $: $1 user@host.FAX',

`ifdef(`FAX_RELAY',

`R$*<@$+.FAX.>$* $: $>MailerToTriple < $F > $1 <@$2.FAX.> $3 user@host.FAX',

`dnl')')

ifdef(`UUCP_RELAY',

`# forward non-local UUCP traffic to our UUCP relay

R$*<@$*.UUCP.>$* $: $>MailerToTriple < $Y > $1 <@$2.UUCP.> $3 uucp mail',

`ifdef(`_MAILER_uucp_',

`# forward other UUCP traffic straight to UUCP

R$* < @ $+ .UUCP. > $* $#_UUCP_ $@ $2 $: $1 < @ $2 .UUCP. > $3 user@host.UUCP',

`dnl')')

ifdef(`_MAILER_usenet_', `

# addresses sent to net.group.USENET will get forwarded to a newsgroup

R$+ . USENET $#usenet $@ usenet $: $1',

`dnl')

ifdef(`_LOCAL_RULES_',

`# figure out what should stay in our local mail system

undivert(1)', `dnl')

# pass names that still have a host to a smarthost (if defined)

R$* < @ $* > $* $: $>MailerToTriple < $S > $1 < @ $2 > $3 glue on smarthost name

# deal with other remote names

ifdef(`_MAILER_smtp_',

`R$* < @$* > $* $#_SMTP_ $@ $2 $: $1 < @ $2 > $3 user@host.domain',

`R$* < @$* > $* $#error $@ 5.1.2 $: "_CODE553 Unrecognized host name " $2')

# handle locally delivered names

R$=L $#_LOCAL_ $: @ $1 special local names

R$+ $#_LOCAL_ $: $1 regular local names

###########################################################################

### Ruleset 5 -- special rewriting after aliases have been expanded ###

###########################################################################

SLocal_localaddr

Slocaladdr=5

R$+ $: $1 $| $>"Local_localaddr" $1

R$+ $| $#ok $@ $1 no change

R$+ $| $#$* $#$2

R$+ $| $* $: $1

ifdef(`_PRESERVE_LUSER_HOST_', `dnl

# Preserve rcpt_host in {Host}

R$+ $: $1 $| $&h $| $&{Host} check h and {Host}

R$+ $| $| $: $(macro {Host} $@ $) $1 no h or {Host}

R$+ $| $| $+ $: $1 h not set, {Host} set

R$+ $| +$* $| $* $: $1 h is +detail, {Host} set

R$+ $| $* @ $+ $| $* $: $(macro {Host} $@ @$3 $) $1 set {Host} to host in h

R$+ $| $+ $| $* $: $(macro {Host} $@ @$2 $) $1 set {Host} to h

')dnl

ifdef(`_FFR_5_', `dnl

# Preserve host in a macro

R$+ $: $(macro {LocalAddrHost} $) $1

R$+ @ $+ $: $(macro {LocalAddrHost} $@ @ $2 $) $1')

ifdef(`_PRESERVE_LOCAL_PLUS_DETAIL_', `', `dnl

# deal with plussed users so aliases work nicely

R$+ + * $#_LOCAL_ $@ $&h $: $1`'ifdef(`_FFR_5_', ` $&{LocalAddrHost}')

R$+ + $* $#_LOCAL_ $@ + $2 $: $1 + *`'ifdef(`_FFR_5_', ` $&{LocalAddrHost}')

')

# prepend an empty "forward host" on the front

R$+ $: <> $1

ifdef(`LUSER_RELAY', `dnl

# send unrecognized local users to a relay host

ifdef(`_PRESERVE_LOCAL_PLUS_DETAIL_', `dnl

R< > $+ + $* $: < ? $L > <+ $2> $(user $1 $) look up user+

R< > $+ $: < ? $L > < > $(user $1 $) look up user

R< ? $* > < $* > $+ <> $: < > $3 $2 found; strip $L

R< ? $* > < $* > $+ $: < $1 > $3 $2 not found', `

R< > $+ $: < $L > $(user $1 $) look up user

R< $* > $+ <> $: < > $2 found; strip $L')

ifdef(`_PRESERVE_LUSER_HOST_', `dnl

R< $+ > $+ $: < $1 > $2 $&{Host}')

dnl')

ifdef(`MAIL_HUB', `dnl

R< > $+ $: < $H > $1 try hub', `dnl')

ifdef(`LOCAL_RELAY', `dnl

R< > $+ $: < $R > $1 try relay', `dnl')

ifdef(`_PRESERVE_LOCAL_PLUS_DETAIL_', `dnl

R< > $+ $@ $1', `dnl

R< > $+ $: < > < $1 <> $&h > nope, restore +detail

ifdef(`_PRESERVE_LUSER_HOST_', `dnl

R< > < $+ @ $+ <> + $* > $: < > < $1 + $3 @ $2 > check whether +detail')

R< > < $+ <> + $* > $: < > < $1 + $2 > check whether +detail

R< > < $+ <> $* > $: < > < $1 > else discard

R< > < $+ + $* > $* < > < $1 > + $2 $3 find the user part

R< > < $+ > + $* $#_LOCAL_ $@ $2 $: @ $1`'ifdef(`_FFR_5_', ` $&{LocalAddrHost}') strip the extra +

R< > < $+ > $@ $1 no +detail

R$+ $: $1 <> $&h add +detail back in

ifdef(`_PRESERVE_LUSER_HOST_', `dnl

R$+ @ $+ <> + $* $: $1 + $3 @ $2 check whether +detail')

R$+ <> + $* $: $1 + $2 check whether +detail

R$+ <> $* $: $1 else discard')

R< local : $* > $* $: $>MailerToTriple < local : $1 > $2 no host extension

R< error : $* > $* $: $>MailerToTriple < error : $1 > $2 no host extension

ifdef(`_PRESERVE_LUSER_HOST_', `dnl

dnl it is $~[ instead of $- to avoid matches on IPv6 addresses

R< $~[ : $+ > $+ @ $+ $: $>MailerToTriple < $1 : $2 > $3 < @ $4 >')

R< $~[ : $+ > $+ $: $>MailerToTriple < $1 : $2 > $3 < @ $2 >

ifdef(`_PRESERVE_LUSER_HOST_', `dnl

R< $+ > $+ @ $+ $@ $>MailerToTriple < $1 > $2 < @ $3 >')

R< $+ > $+ $@ $>MailerToTriple < $1 > $2 < @ $1 >

ifdef(`_MAILER_TABLE_', `dnl

ifdef(`_LDAP_ROUTING_', `dnl

###################################################################

### Ruleset LDAPMailertable -- mailertable lookup for LDAP ###

dnl input: <Domain> FullAddress

###################################################################

SLDAPMailertable

R< $+ > $* $: < $(mailertable $1 $) > $2 lookup

R< $~[ : $* > $* $>MailerToTriple < $1 : $2 > $3 check resolved?

R< $+ > $* $: < $1 > $>Mailertable <$1> $2 try domain

R< $+ > $#$* $#$2 found

R< $+ > $* $#_RELAY_ $@ $1 $: $2 not found, direct relay',

`dnl')

###################################################################

### Ruleset 90 -- try domain part of mailertable entry ###

dnl input: LeftPartOfDomain <RightPartOfDomain> FullAddress

###################################################################

SMailertable=90

dnl shift and check

dnl %2 is not documented in cf/README

R$* <$- . $+ > $* $: $1$2 < $(mailertable .$3 $@ $1$2 $@ $2 $) > $4

dnl it is $~[ instead of $- to avoid matches on IPv6 addresses

R$* <$~[ : $* > $* $>MailerToTriple < $2 : $3 > $4 check -- resolved?

R$* < . $+ > $* $@ $>Mailertable $1 . <$2> $3 no -- strip & try again

dnl is $2 always empty?

R$* < $* > $* $: < $(mailertable . $@ $1$2 $) > $3 try "."

R< $~[ : $* > $* $>MailerToTriple < $1 : $2 > $3 "." found?

dnl return full address

R< $* > $* $@ $2 no mailertable match',

`dnl')

###################################################################

### Ruleset 95 -- canonify mailer:[user@]host syntax to triple ###

dnl input: in general: <[mailer:]host> lp<@domain>rest

dnl <> address -> address

dnl <error:d.s.n:text> -> error

dnl <error:keyword:text> -> error

dnl <error:text> -> error

dnl <mailer:user@host> lp<@domain>rest -> mailer host user

dnl <mailer:host> address -> mailer host address

dnl <localdomain> address -> address

dnl <host> address -> relay host address

###################################################################

SMailerToTriple=95

R< > $* $@ $1 strip off null relay

R< error : $-.$-.$- : $+ > $* $#error $@ $1.$2.$3 $: $4

R< error : $- : $+ > $* $#error $@ $(dequote $1 $) $: $2

R< error : $+ > $* $#error $: $1

R< local : $* > $* $>CanonLocal < $1 > $2

dnl it is $~[ instead of $- to avoid matches on IPv6 addresses

R< $~[ : $+ @ $+ > $*<$*>$* $# $1 $@ $3 $: $2<@$3> use literal user

R< $~[ : $+ > $* $# $1 $@ $2 $: $3 try qualified mailer

R< $=w > $* $@ $2 delete local host

R< $+ > $* $#_RELAY_ $@ $1 $: $2 use unqualified mailer

###################################################################

### Ruleset CanonLocal -- canonify local: syntax ###

dnl input: <user> address

dnl <x> <@host> : rest -> Recurse rest

dnl <x> p1 $=O p2 <@host> -> Recurse p1 $=O p2

dnl <> user <@host> rest -> local user@host user

dnl <> user -> local user user

dnl <user@host> lp <@domain> rest -> <user> lp <@host> [cont]

dnl <user> lp <@host> rest -> local lp@host user

dnl <user> lp -> local lp user

###################################################################

SCanonLocal

# strip local host from routed addresses

R< $* > < @ $+ > : $+ $@ $>Recurse $3

R< $* > $+ $=O $+ < @ $+ > $@ $>Recurse $2 $3 $4

# strip trailing dot from any host name that may appear

R< $* > $* < @ $* . > $: < $1 > $2 < @ $3 >

# handle local: syntax -- use old user, either with or without host

R< > $* < @ $* > $* $#_LOCAL_ $@ $1@$2 $: $1

R< > $+ $#_LOCAL_ $@ $1 $: $1

# handle local:user@host syntax -- ignore host part

R< $+ @ $+ > $* < @ $* > $: < $1 > $3 < @ $4 >

# handle local:user syntax

R< $+ > $* <@ $* > $* $#_LOCAL_ $@ $2@$3 $: $1

R< $+ > $* $#_LOCAL_ $@ $2 $: $1

###################################################################

### Ruleset 93 -- convert header names to masqueraded form ###

###################################################################

SMasqHdr=93

ifdef(`_GENERICS_TABLE_', `dnl

# handle generics database

ifdef(`_GENERICS_ENTIRE_DOMAIN_',

dnl if generics should be applied add a @ as mark

`R$+ < @ $* $=G . > $: < $1@$2$3 > $1 < @ $2$3 . > @ mark',

`R$+ < @ $=G . > $: < $1@$2 > $1 < @ $2 . > @ mark')

R$+ < @ *LOCAL* > $: < $1@$j > $1 < @ *LOCAL* > @ mark

dnl workspace: either user<@domain> or <user@domain> user <@domain> @

dnl ignore the first case for now

dnl if it has the mark lookup full address

dnl broken: %1 is full address not just detail

R< $+ > $+ < $* > @ $: < $(generics $1 $: @ $1 $) > $2 < $3 >

dnl workspace: ... or <match|@user@domain> user <@domain>

dnl no match, try user+detail@domain

R<@$+ + $* @ $+> $+ < @ $+ >

$: < $(generics $1+*@$3 $@ $2 $:@$1 + $2@$3 $) > $4 < @ $5 >

R<@$+ + $* @ $+> $+ < @ $+ >

$: < $(generics $1@$3 $: $) > $4 < @ $5 >

dnl no match, remove mark

R<@$+ > $+ < @ $+ > $: < > $2 < @ $3 >

dnl no match, try @domain for exceptions

R< > $+ < @ $+ . > $: < $(generics @$2 $@ $1 $: $) > $1 < @ $2 . >

dnl workspace: ... or <match> user <@domain>

dnl no match, try local part

R< > $+ < @ $+ > $: < $(generics $1 $: $) > $1 < @ $2 >

R< > $+ + $* < @ $+ > $: < $(generics $1+* $@ $2 $: $) > $1 + $2 < @ $3 >

R< > $+ + $* < @ $+ > $: < $(generics $1 $: $) > $1 + $2 < @ $3 >

R< $* @ $* > $* < $* > $@ $>canonify $1 @ $2 found qualified

R< $+ > $* < $* > $: $>canonify $1 @ *LOCAL* found unqualified

R< > $* $: $1 not found',

`dnl')

# do not masquerade anything in class N

R$* < @ $* $=N . > $@ $1 < @ $2 $3 . >

ifdef(`MASQUERADE_NAME', `dnl

# special case the users that should be exposed

R$=E < @ *LOCAL* > $@ $1 < @ $j . > leave exposed

ifdef(`_MASQUERADE_ENTIRE_DOMAIN_',

`R$=E < @ $* $=M . > $@ $1 < @ $2 $3 . >',

`R$=E < @ $=M . > $@ $1 < @ $2 . >')

ifdef(`_LIMITED_MASQUERADE_', `dnl',

`R$=E < @ $=w . > $@ $1 < @ $2 . >')

# handle domain-specific masquerading

ifdef(`_MASQUERADE_ENTIRE_DOMAIN_',

`R$* < @ $* $=M . > $* $: $1 < @ $2 $3 . @ $M > $4 convert masqueraded doms',

`R$* < @ $=M . > $* $: $1 < @ $2 . @ $M > $3 convert masqueraded doms')

ifdef(`_LIMITED_MASQUERADE_', `dnl',

`R$* < @ $=w . > $* $: $1 < @ $2 . @ $M > $3')

R$* < @ *LOCAL* > $* $: $1 < @ $j . @ $M > $2

R$* < @ $+ @ > $* $: $1 < @ $2 > $3 $M is null

R$* < @ $+ @ $+ > $* $: $1 < @ $3 . > $4 $M is not null

dnl', `dnl no masquerading

dnl just fix *LOCAL* leftovers

R$* < @ *LOCAL* > $@ $1 < @ $j . >')

###################################################################

### Ruleset 94 -- convert envelope names to masqueraded form ###

###################################################################

SMasqEnv=94

ifdef(`_MASQUERADE_ENVELOPE_',

`R$+ $@ $>MasqHdr $1',

`R$* < @ *LOCAL* > $* $: $1 < @ $j . > $2')

###################################################################

### Ruleset 98 -- local part of ruleset zero (can be null) ###

###################################################################

SParseLocal=98

undivert(3)dnl LOCAL_RULE_0

ifdef(`_LDAP_ROUTING_', `dnl

######################################################################

### LDAPExpand: Expand address using LDAP routing

###

### Parameters:

### <$1> -- parsed address (user < @ domain . >) (pass through)

### <$2> -- RFC822 address (user @ domain) (used for lookup)

### <$3> -- +detail information

###

### Returns:

### Mailer triplet ($#mailer $@ host $: address)

### Parsed address (user < @ domain . >)

######################################################################

# SMTP operation modes

C{SMTPOpModes} s d D

SLDAPExpand

# do the LDAP lookups

R<$+><$+><$*> $: <$(ldapmra $2 $: $)> <$(ldapmh $2 $: $)> <$1> <$2> <$3>

# look for temporary failures and...

R<$* <TMPF>> <$*> <$+> <$+> <$*> $: $&{opMode} $| TMPF <$&{addr_type}> $| $3

R<$*> <$* <TMPF>> <$+> <$+> <$*> $: $&{opMode} $| TMPF <$&{addr_type}> $| $3

ifelse(_LDAP_ROUTE_MAPTEMP_, `_TEMPFAIL_', `dnl

# ... temp fail RCPT SMTP commands

R$={SMTPOpModes} $| TMPF <e r> $| $+ $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."')

# ... return original address for MTA to queue up

R$* $| TMPF <$*> $| $+ $@ $3

# if mailRoutingAddress and local or non-existant mailHost,

# return the new mailRoutingAddress

ifelse(_LDAP_ROUTE_DETAIL_, `_PRESERVE_', `dnl

R<$+@$+> <$=w> <$+> <$+> <$*> $@ $>Parse0 $>canonify $1 $6 @ $2

R<$+@$+> <> <$+> <$+> <$*> $@ $>Parse0 $>canonify $1 $5 @ $2')

R<$+> <$=w> <$+> <$+> <$*> $@ $>Parse0 $>canonify $1

R<$+> <> <$+> <$+> <$*> $@ $>Parse0 $>canonify $1

# if mailRoutingAddress and non-local mailHost,

# relay to mailHost with new mailRoutingAddress

ifelse(_LDAP_ROUTE_DETAIL_, `_PRESERVE_', `dnl

ifdef(`_MAILER_TABLE_', `dnl

# check mailertable for host, relay from there

R<$+@$+> <$+> <$+> <$+> <$*> $>LDAPMailertable <$3> $>canonify $1 $6 @ $2',

`R<$+@$+> <$+> <$+> <$+> <$*> $#_RELAY_ $@ $3 $: $>canonify $1 $6 @ $2')')

ifdef(`_MAILER_TABLE_', `dnl

# check mailertable for host, relay from there

R<$+> <$+> <$+> <$+> <$*> $>LDAPMailertable <$2> $>canonify $1',

`R<$+> <$+> <$+> <$+> <$*> $#_RELAY_ $@ $2 $: $>canonify $1')

# if no mailRoutingAddress and local mailHost,

# return original address

R<> <$=w> <$+> <$+> <$*> $@ $2

# if no mailRoutingAddress and non-local mailHost,

# relay to mailHost with original address

ifdef(`_MAILER_TABLE_', `dnl

# check mailertable for host, relay from there

R<> <$+> <$+> <$+> <$*> $>LDAPMailertable <$1> $2',

`R<> <$+> <$+> <$+> <$*> $#_RELAY_ $@ $1 $: $2')

ifdef(`_LDAP_ROUTE_DETAIL_',

`# if no mailRoutingAddress and no mailHost,

# try without +detail

R<> <> <$+> <$+ + $* @ $+> <> $@ $>LDAPExpand <$1> <$2 @ $4> <+$3>')dnl

ifdef(`_LDAP_ROUTE_NODOMAIN_', `

# pretend we did the @domain lookup

R<> <> <$+> <$+ @ $+> <$*> $: <> <> <$1> <@ $3> <$4>', `

# if still no mailRoutingAddress and no mailHost,

# try @domain

ifelse(_LDAP_ROUTE_DETAIL_, `_PRESERVE_', `dnl

R<> <> <$+> <$+ + $* @ $+> <> $@ $>LDAPExpand <$1> <@ $4> <+$3>')

R<> <> <$+> <$+ @ $+> <$*> $@ $>LDAPExpand <$1> <@ $3> <$4>')

# if no mailRoutingAddress and no mailHost and this was a domain attempt,

ifelse(_LDAP_ROUTING_, `_MUST_EXIST_', `dnl

# user does not exist

R<> <> <$+> <@ $+> <$*> $: <?> < $&{addr_type} > < $1 >

# only give error for envelope recipient

R<?> <e r> <$+> $#error $@ nouser $: "550 User unknown"

ifdef(`_LDAP_SENDER_MUST_EXIST_', `dnl

# and the sender too

R<?> <e s> <$+> $#error $@ nouser $: "550 User unknown"')

R<?> <$*> <$+> $@ $2',

`dnl

# return the original address

R<> <> <$+> <@ $+> <$*> $@ $1')',

`dnl')

ifelse(substr(confDELIVERY_MODE,0,1), `d', `errprint(`WARNING: Antispam rules not available in deferred delivery mode.

')')

ifdef(`_ACCESS_TABLE_', `dnl', `divert(-1)')

######################################################################

### D: LookUpDomain -- search for domain in access database

###

### Parameters:

### <$1> -- key (domain name)

### <$2> -- default (what to return if not found in db)

dnl must not be empty

### <$3> -- mark (must be <(!|+) single-token>)

### ! does lookup only with tag

### + does lookup with and without tag

### <$4> -- passthru (additional data passed unchanged through)

dnl returns: <default> <passthru>

dnl <result> <passthru>

######################################################################

SD

dnl workspace <key> <default> <passthru> <mark>

dnl lookup with tag (in front, no delimiter here)

dnl 2 3 4 5

R<$*> <$+> <$- $-> <$*> $: < $(access $4`'_TAG_DELIM_`'$1 $: ? $) > <$1> <$2> <$3 $4> <$5>

dnl workspace <result-of-lookup|?> <key> <default> <passthru> <mark>

dnl lookup without tag?

dnl 1 2 3 4

R<?> <$+> <$+> <+ $-> <$*> $: < $(access $1 $: ? $) > <$1> <$2> <+ $3> <$4>

ifdef(`_LOOKUPDOTDOMAIN_', `dnl omit first component: lookup .rest

dnl XXX apply this also to IP addresses?

dnl currently it works the wrong way round for [1.2.3.4]

dnl 1 2 3 4 5 6

R<?> <$+.$+> <$+> <$- $-> <$*> $: < $(access $5`'_TAG_DELIM_`'.$2 $: ? $) > <$1.$2> <$3> <$4 $5> <$6>

dnl 1 2 3 4 5

R<?> <$+.$+> <$+> <+ $-> <$*> $: < $(access .$2 $: ? $) > <$1.$2> <$3> <+ $4> <$5>', `dnl')

ifdef(`_ACCESS_SKIP_', `dnl

dnl found SKIP: return <default> and <passthru>

dnl 1 2 3 4 5

R<SKIP> <$+> <$+> <$- $-> <$*> $@ <$2> <$5>', `dnl')

dnl not found: IPv4 net (no check is done whether it is an IP number!)

dnl 1 2 3 4 5 6

R<?> <[$+.$-]> <$+> <$- $-> <$*> $@ $>D <[$1]> <$3> <$4 $5> <$6>

ifdef(`NO_NETINET6', `dnl',

`dnl not found: IPv6 net

dnl (could be merged with previous rule if we have a class containing .:)

dnl 1 2 3 4 5 6

R<?> <[$+::$-]> <$+> <$- $-> <$*> $: $>D <[$1]> <$3> <$4 $5> <$6>

R<?> <[$+:$-]> <$+> <$- $-> <$*> $: $>D <[$1]> <$3> <$4 $5> <$6>')

dnl not found, but subdomain: try again

dnl 1 2 3 4 5 6

R<?> <$+.$+> <$+> <$- $-> <$*> $@ $>D <$2> <$3> <$4 $5> <$6>

ifdef(`_FFR_LOOKUPTAG_', `dnl lookup Tag:

dnl 1 2 3 4

R<?> <$+> <$+> <! $-> <$*> $: < $(access $3`'_TAG_DELIM_ $: ? $) > <$1> <$2> <! $3> <$4>', `dnl')

dnl not found, no subdomain: return <default> and <passthru>

dnl 1 2 3 4 5

R<?> <$+> <$+> <$- $-> <$*> $@ <$2> <$5>

ifdef(`_ATMPF_', `dnl tempfail?

dnl 2 3 4 5 6

R<$* _ATMPF_> <$+> <$+> <$- $-> <$*> $@ <_ATMPF_> <$6>', `dnl')

dnl return <result of lookup> and <passthru>

dnl 2 3 4 5 6

R<$*> <$+> <$+> <$- $-> <$*> $@ <$1> <$6>

######################################################################

### A: LookUpAddress -- search for host address in access database

###

### Parameters:

### <$1> -- key (dot quadded host address)

### <$2> -- default (what to return if not found in db)

dnl must not be empty

### <$3> -- mark (must be <(!|+) single-token>)

### ! does lookup only with tag

### + does lookup with and without tag

### <$4> -- passthru (additional data passed through)

dnl returns: <default> <passthru>

dnl <result> <passthru>

######################################################################

SA

dnl lookup with tag

dnl 2 3 4 5

R<$+> <$+> <$- $-> <$*> $: < $(access $4`'_TAG_DELIM_`'$1 $: ? $) > <$1> <$2> <$3 $4> <$5>

dnl lookup without tag

dnl 1 2 3 4

R<?> <$+> <$+> <+ $-> <$*> $: < $(access $1 $: ? $) > <$1> <$2> <+ $3> <$4>

dnl workspace <result-of-lookup|?> <key> <default> <mark> <passthru>

ifdef(`_ACCESS_SKIP_', `dnl

dnl found SKIP: return <default> and <passthru>

dnl 1 2 3 4 5

R<SKIP> <$+> <$+> <$- $-> <$*> $@ <$2> <$5>', `dnl')

ifdef(`NO_NETINET6', `dnl',

`dnl no match; IPv6: remove last part

dnl 1 2 3 4 5 6

R<?> <$+::$-> <$+> <$- $-> <$*> $@ $>A <$1> <$3> <$4 $5> <$6>

R<?> <$+:$-> <$+> <$- $-> <$*> $@ $>A <$1> <$3> <$4 $5> <$6>')

dnl no match; IPv4: remove last part

dnl 1 2 3 4 5 6

R<?> <$+.$-> <$+> <$- $-> <$*> $@ $>A <$1> <$3> <$4 $5> <$6>

dnl no match: return default

dnl 1 2 3 4 5

R<?> <$+> <$+> <$- $-> <$*> $@ <$2> <$5>

ifdef(`_ATMPF_', `dnl tempfail?

dnl 2 3 4 5 6

R<$* _ATMPF_> <$+> <$+> <$- $-> <$*> $@ <_ATMPF_> <$6>', `dnl')

dnl match: return result

dnl 2 3 4 5 6

R<$*> <$+> <$+> <$- $-> <$*> $@ <$1> <$6>

dnl endif _ACCESS_TABLE_

divert(0)

######################################################################

### CanonAddr -- Convert an address into a standard form for

### relay checking. Route address syntax is

### crudely converted into a %-hack address.

###

### Parameters:

### $1 -- full recipient address

###

### Returns:

### parsed address, not in source route form

dnl user%host%host<@domain>

dnl host!user<@domain>

######################################################################

SCanonAddr

R$* $: $>Parse0 $>canonify $1 make domain canonical

ifdef(`_USE_DEPRECATED_ROUTE_ADDR_',`dnl

R< @ $+ > : $* @ $* < @ $1 > : $2 % $3 change @ to % in src route

R$* < @ $+ > : $* : $* $3 $1 < @ $2 > : $4 change to % hack.

R$* < @ $+ > : $* $3 $1 < @ $2 >

dnl')

######################################################################

### ParseRecipient -- Strip off hosts in $=R as well as possibly

### $* $=m or the access database.

### Check user portion for host separators.

###

### Parameters:

### $1 -- full recipient address

###

### Returns:

### parsed, non-local-relaying address

######################################################################

SParseRecipient

dnl mark and canonify address

R$* $: <?> $>CanonAddr $1

dnl workspace: <?> localpart<@domain[.]>

R<?> $* < @ $* . > <?> $1 < @ $2 > strip trailing dots

dnl workspace: <?> localpart<@domain>

R<?> $- < @ $* > $: <?> $(dequote $1 $) < @ $2 > dequote local part

# if no $=O character, no host in the user portion, we are done

R<?> $* $=O $* < @ $* > $: <NO> $1 $2 $3 < @ $4>

dnl no $=O in localpart: return

R<?> $* $@ $1

dnl workspace: <NO> localpart<@domain>, where localpart contains $=O

dnl mark everything which has an "authorized" domain with <RELAY>

ifdef(`_RELAY_ENTIRE_DOMAIN_', `dnl

# if we relay, check username portion for user%host so host can be checked also

R<NO> $* < @ $* $=m > $: <RELAY> $1 < @ $2 $3 >', `dnl')

dnl workspace: <(NO|RELAY)> localpart<@domain>, where localpart contains $=O

dnl if mark is <NO> then change it to <RELAY> if domain is "authorized"

dnl what if access map returns something else than RELAY?

dnl we are only interested in RELAY entries...

dnl other To: entries: blacklist recipient; generic entries?

dnl if it is an error we probably do not want to relay anyway

ifdef(`_RELAY_HOSTS_ONLY_',

`R<NO> $* < @ $=R > $: <RELAY> $1 < @ $2 >

ifdef(`_ACCESS_TABLE_', `dnl

R<NO> $* < @ $+ > $: <$(access To:$2 $: NO $)> $1 < @ $2 >

R<NO> $* < @ $+ > $: <$(access $2 $: NO $)> $1 < @ $2 >',`dnl')',

`R<NO> $* < @ $* $=R > $: <RELAY> $1 < @ $2 $3 >

ifdef(`_ACCESS_TABLE_', `dnl

R<NO> $* < @ $+ > $: $>D <$2> <NO> <+ To> <$1 < @ $2 >>

R<$+> <$+> $: <$1> $2',`dnl')')

ifdef(`_RELAY_MX_SERVED_', `dnl

dnl do "we" ($=w) act as backup MX server for the destination domain?

R<NO> $* < @ $+ > $: <MX> < : $(mxserved $2 $) : > < $1 < @$2 > >

R<MX> < : $* <TEMP> : > $* $#TEMP $@ 4.4.0 $: "450 Can not check MX records for recipient host " $1

dnl yes: mark it as <RELAY>

R<MX> < $* : $=w. : $* > < $+ > $: <RELAY> $4

dnl no: put old <NO> mark back

R<MX> < : $* : > < $+ > $: <NO> $2', `dnl')

dnl do we relay to this recipient domain?

R<RELAY> $* < @ $* > $@ $>ParseRecipient $1

dnl something else

R<$+> $* $@ $2

######################################################################

### check_relay -- check hostname/address on SMTP startup

######################################################################

ifdef(`_CONTROL_IMMEDIATE_',`dnl

Scheck_relay

ifdef(`_RATE_CONTROL_IMMEDIATE_',`dnl

dnl workspace: ignored...

R$* $: $>"RateControl" dummy', `dnl')

ifdef(`_CONN_CONTROL_IMMEDIATE_',`dnl

dnl workspace: ignored...

R$* $: $>"ConnControl" dummy', `dnl')

dnl')

SLocal_check_relay

Scheck`'_U_`'relay

ifdef(`_USE_CLIENT_PTR_',`dnl

R$* $| $* $: $&{client_ptr} $| $2', `dnl')

R$* $: $1 $| $>"Local_check_relay" $1

R$* $| $* $| $#$* $#$3

R$* $| $* $| $* $@ $>"Basic_check_relay" $1 $| $2

SBasic_check_relay

# check for deferred delivery mode

R$* $: < $&{deliveryMode} > $1

R< d > $* $@ deferred

R< $* > $* $: $2

ifdef(`_ACCESS_TABLE_', `dnl

dnl workspace: {client_name} $| {client_addr}

R$+ $| $+ $: $>D < $1 > <?> <+ Connect> < $2 >

dnl workspace: <result-of-lookup> <{client_addr}>

dnl OR $| $+ if client_name is empty

R $| $+ $: $>A < $1 > <?> <+ Connect> <> empty client_name

dnl workspace: <result-of-lookup> <{client_addr}>

R<?> <$+> $: $>A < $1 > <?> <+ Connect> <> no: another lookup

dnl workspace: <result-of-lookup> (<>|<{client_addr}>)

R<?> <$*> $: OK found nothing

dnl workspace: <result-of-lookup> (<>|<{client_addr}>) | OK

R<$={Accept}> <$*> $@ $1 return value of lookup

R<REJECT> <$*> $#error ifdef(`confREJECT_MSG', `$: confREJECT_MSG', `$@ 5.7.1 $: "550 Access denied"')

R<DISCARD> <$*> $#discard $: discard

R<QUARANTINE:$+> <$*> $#error $@ quarantine $: $1

dnl error tag

R<ERROR:$-.$-.$-:$+> <$*> $#error $@ $1.$2.$3 $: $4

R<ERROR:$+> <$*> $#error $: $1

ifdef(`_ATMPF_', `R<$* _ATMPF_> <$*> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

dnl generic error from access map

R<$+> <$*> $#error $: $1', `dnl')

ifdef(`_RBL_',`dnl

# DNS based IP address spam list

dnl workspace: ignored...

R$* $: $&{client_addr}

R$-.$-.$-.$- $: <?> $(host $4.$3.$2.$1._RBL_. $: OK $)

R<?>OK $: OKSOFAR

R<?>$+ $#error $@ 5.7.1 $: "550 Rejected: " $&{client_addr} " listed at _RBL_"',

`dnl')

ifdef(`_RATE_CONTROL_',`dnl

ifdef(`_RATE_CONTROL_IMMEDIATE_',`', `dnl

dnl workspace: ignored...

R$* $: $>"RateControl" dummy')', `dnl')

ifdef(`_CONN_CONTROL_',`dnl

ifdef(`_CONN_CONTROL_IMMEDIATE_',`',`dnl

dnl workspace: ignored...

R$* $: $>"ConnControl" dummy')', `dnl')

undivert(8)

ifdef(`_REQUIRE_RDNS_', `dnl

R$* $: $&{client_addr} $| $&{client_resolve}

R$=R $* $@ RELAY We relay for these

R$* $| OK $@ OK Resolves.

R$* $| FAIL $#error $@ 5.7.1 $: 550 Fix reverse DNS for $1

R$* $| TEMP $#error $@ 4.1.8 $: 451 Client IP address $1 does not resolve

R$* $| FORGED $#error $@ 4.1.8 $: 451 Possibly forged hostname for $1

', `dnl')

######################################################################

### check_mail -- check SMTP ``MAIL FROM:'' command argument

######################################################################

SLocal_check_mail

Scheck`'_U_`'mail

R$* $: $1 $| $>"Local_check_mail" $1

R$* $| $#$* $#$2

R$* $| $* $@ $>"Basic_check_mail" $1

SBasic_check_mail

# check for deferred delivery mode

R$* $: < $&{deliveryMode} > $1

R< d > $* $@ deferred

R< $* > $* $: $2

# authenticated?

dnl done first: we can require authentication for every mail transaction

dnl workspace: address as given by MAIL FROM: (sender)

R$* $: $1 $| $>"tls_client" $&{verify} $| MAIL

R$* $| $#$+ $#$2

dnl undo damage: remove result of tls_client call

R$* $| $* $: $1

dnl workspace: address as given by MAIL FROM:

R<> $@ <OK> we MUST accept <> (RFC 1123)

ifdef(`_ACCEPT_UNQUALIFIED_SENDERS_',`dnl',`dnl

dnl do some additional checks

dnl no user@host

dnl no user@localhost (if nonlocal sender)

dnl this is a pretty simple canonification, it will not catch every case

dnl just make sure the address has <> around it (which is required by

dnl the RFC anyway, maybe we should complain if they are missing...)

dnl dirty trick: if it is user@host, just add a dot: user@host. this will

dnl not be modified by host lookups.

R$+ $: <?> $1

R<?><$+> $: <@> <$1>

R<?>$+ $: <@> <$1>

dnl workspace: <@> <address>

dnl prepend daemon_flags

R$* $: $&{daemon_flags} $| $1

dnl workspace: ${daemon_flags} $| <@> <address>

dnl do not allow these at all or only from local systems?

R$* f $* $| <@> < $* @ $- > $: < ? $&{client_name} > < $3 @ $4 >

dnl accept unqualified sender: change mark to avoid test

R$* u $* $| <@> < $* > $: <?> < $3 >

dnl workspace: ${daemon_flags} $| <@> <address>

dnl or: <? ${client_name} > <address>

dnl or: <?> <address>

dnl remove daemon_flags

R$* $| $* $: $2

# handle case of @localhost on address

R<@> < $* @ localhost > $: < ? $&{client_name} > < $1 @ localhost >

R<@> < $* @ [127.0.0.1] >

$: < ? $&{client_name} > < $1 @ [127.0.0.1] >

R<@> < $* @ localhost.$m >

$: < ? $&{client_name} > < $1 @ localhost.$m >

ifdef(`_NO_UUCP_', `dnl',

`R<@> < $* @ localhost.UUCP >

$: < ? $&{client_name} > < $1 @ localhost.UUCP >')

dnl workspace: < ? $&{client_name} > <user@localhost|host>

dnl or: <@> <address>

dnl or: <?> <address> (thanks to u in ${daemon_flags})

R<@> $* $: $1 no localhost as domain

dnl workspace: < ? $&{client_name} > <user@localhost|host>

dnl or: <address>

dnl or: <?> <address> (thanks to u in ${daemon_flags})

R<? $=w> $* $: $2 local client: ok

R<? $+> <$+> $#error $@ 5.5.4 $: "_CODE553 Real domain name required for sender address"

dnl remove <?> (happens only if ${client_name} == "" or u in ${daemon_flags})

R<?> $* $: $1')

dnl workspace: address (or <address>)

R$* $: <?> $>CanonAddr $1 canonify sender address and mark it

dnl workspace: <?> CanonicalAddress (i.e. address in canonical form localpart<@host>)

dnl there is nothing behind the <@host> so no trailing $* needed

R<?> $* < @ $+ . > <?> $1 < @ $2 > strip trailing dots

# handle non-DNS hostnames (*.bitnet, *.decnet, *.uucp, etc)

R<?> $* < @ $* $=P > $: <_RES_OK_> $1 < @ $2 $3 >

dnl workspace <mark> CanonicalAddress where mark is ? or OK

dnl A sender address with my local host name ($j) is safe

R<?> $* < @ $j > $: <_RES_OK_> $1 < @ $j >

ifdef(`_ACCEPT_UNRESOLVABLE_DOMAINS_',

`R<?> $* < @ $+ > $: <_RES_OK_> $1 < @ $2 > ... unresolvable OK',

`R<?> $* < @ $+ > $: <? $(resolve $2 $: $2 <PERM> $) > $1 < @ $2 >

R<? $* <$->> $* < @ $+ >

$: <$2> $3 < @ $4 >')

dnl workspace <mark> CanonicalAddress where mark is ?, _RES_OK_, PERM, TEMP

dnl mark is ? iff the address is user (wo @domain)

ifdef(`_ACCESS_TABLE_', `dnl

# check sender address: user@address, user@, address

dnl should we remove +ext from user?

dnl workspace: <mark> CanonicalAddress where mark is: ?, _RES_OK_, PERM, TEMP

R<$+> $+ < @ $* > $: @<$1> <$2 < @ $3 >> $| <F:$2@$3> <U:$2@> <D:$3>

R<$+> $+ $: @<$1> <$2> $| <U:$2@>

dnl workspace: @<mark> <CanonicalAddress> $| <@type:address> ....

dnl $| is used as delimiter, otherwise false matches may occur: <user<@domain>>

dnl will only return user<@domain when "reversing" the args

R@ <$+> <$*> $| <$+> $: <@> <$1> <$2> $| $>SearchList <+ From> $| <$3> <>

dnl workspace: <@><mark> <CanonicalAddress> $| <result>

R<@> <$+> <$*> $| <$*> $: <$3> <$1> <$2> reverse result

dnl workspace: <result> <mark> <CanonicalAddress>

# retransform for further use

dnl required form:

dnl <ResultOfLookup|mark> CanonicalAddress

R<?> <$+> <$*> $: <$1> $2 no match

R<$+> <$+> <$*> $: <$1> $3 relevant result, keep it', `dnl')

dnl workspace <ResultOfLookup|mark> CanonicalAddress

dnl mark is ? iff the address is user (wo @domain)

ifdef(`_ACCEPT_UNQUALIFIED_SENDERS_',`dnl',`dnl

# handle case of no @domain on address

dnl prepend daemon_flags

R<?> $* $: $&{daemon_flags} $| <?> $1

dnl accept unqualified sender: change mark to avoid test

R$* u $* $| <?> $* $: <_RES_OK_> $3

dnl remove daemon_flags

R$* $| $* $: $2

R<?> $* $: < ? $&{client_addr} > $1

R<?> $* $@ <_RES_OK_> ...local unqualed ok

R<? $+> $* $#error $@ 5.5.4 $: "_CODE553 Domain name required for sender address " $&f

...remote is not')

# check results

R<?> $* $: @ $1 mark address: nothing known about it

R<$={ResOk}> $* $: @ $2 domain ok

R<TEMP> $* $#error $@ 4.1.8 $: "451 Domain of sender address " $&f " does not resolve"

R<PERM> $* $#error $@ 5.1.8 $: "_CODE553 Domain of sender address " $&f " does not exist"

ifdef(`_ACCESS_TABLE_', `dnl

R<$={Accept}> $* $# $1 accept from access map

R<DISCARD> $* $#discard $: discard

R<QUARANTINE:$+> $* $#error $@ quarantine $: $1

R<REJECT> $* $#error ifdef(`confREJECT_MSG', `$: confREJECT_MSG', `$@ 5.7.1 $: "550 Access denied"')

dnl error tag

R<ERROR:$-.$-.$-:$+> $* $#error $@ $1.$2.$3 $: $4

R<ERROR:$+> $* $#error $: $1

ifdef(`_ATMPF_', `R<_ATMPF_> $* $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

dnl generic error from access map

R<$+> $* $#error $: $1 error from access db',

`dnl')

dnl workspace: @ CanonicalAddress (i.e. address in canonical form localpart<@host>)

ifdef(`_BADMX_CHK_', `dnl

R@ $*<@$+>$* $: $1<@$2>$3 $| $>BadMX $2

R$* $| $#$* $#$2

SBadMX

# Look up MX records and ferret away a copy of the original address.

# input: domain part of address to check

R$+ $:<MX><$1><:$(mxlist $1$):><:>

# workspace: <MX><domain><: mxlist-result $><:>

R<MX><$+><:$*<TEMP>:><$*> $#error $@ 4.1.2 $: "450 MX lookup failure for "$1

# workspace: <MX> <original destination> <unchecked mxlist> <checked mxlist>

# Recursively run badmx check on each mx.

R<MX><$*><:$+:$*><:$*> <MX><$1><:$3><: $4 $(badmx $2 $):>

# See if any of them fail.

R<MX><$*><$*><$*<BADMX>:$*> $#error $@ 5.1.2 $:"550 Illegal MX record for host "$1

# Reverse the mxlists so we can use the same argument order again.

R<MX><$*><$*><$*> $:<MX><$1><$3><$2>

R<MX><$*><:$+:$*><:$*> <MX><$1><:$3><:$4 $(dnsA $2 $) :>

# Reverse the lists so we can use the same argument order again.

R<MX><$*><$*><$*> $:<MX><$1><$3><$2>

R<MX><$*><:$+:$*><:$*> <MX><$1><:$3><:$4 $(BadMXIP $2 $) :>

R<MX><$*><$*><$*<BADMXIP>:$*> $#error $@ 5.1.2 $:"550 Invalid MX record for host "$1',

`dnl')

######################################################################

### check_rcpt -- check SMTP ``RCPT TO:'' command argument

######################################################################

SLocal_check_rcpt

Scheck`'_U_`'rcpt

R$* $: $1 $| $>"Local_check_rcpt" $1

R$* $| $#$* $#$2

R$* $| $* $@ $>"Basic_check_rcpt" $1

SBasic_check_rcpt

# empty address?

R<> $#error $@ nouser $: "553 User address required"

R$@ $#error $@ nouser $: "553 User address required"

# check for deferred delivery mode

R$* $: < $&{deliveryMode} > $1

R< d > $* $@ deferred

R< $* > $* $: $2

ifdef(`_REQUIRE_QUAL_RCPT_', `dnl

dnl this code checks for user@host where host is not a FQHN.

dnl it is not activated.

dnl notice: code to check for a recipient without a domain name is

dnl available down below; look for the same macro.

dnl this check is done here because the name might be qualified by the

dnl canonicalization.

# require fully qualified domain part?

dnl very simple canonification: make sure the address is in < >

R$+ $: <?> $1

R<?> <$+> $: <@> <$1>

R<?> $+ $: <@> <$1>

R<@> < postmaster > $: postmaster

R<@> < $* @ $+ . $+ > $: < $1 @ $2 . $3 >

dnl prepend daemon_flags

R<@> $* $: $&{daemon_flags} $| <@> $1

dnl workspace: ${daemon_flags} $| <@> <address>

dnl _r_equire qual.rcpt: ok

R$* r $* $| <@> < $+ @ $+ > $: < $3 @ $4 >

dnl do not allow these at all or only from local systems?

R$* r $* $| <@> < $* > $: < ? $&{client_name} > < $3 >

R<?> < $* > $: <$1>

R<? $=w> < $* > $: <$1>

R<? $+> <$+> $#error $@ 5.5.4 $: "553 Fully qualified domain name required"

dnl remove daemon_flags for other cases

R$* $| <@> $* $: $2', `dnl')

dnl ##################################################################

dnl call subroutines for recipient and relay

dnl possible returns from subroutines:

dnl $#TEMP temporary failure

dnl $#error permanent failure (or temporary if from access map)

dnl $#other stop processing

dnl RELAY RELAYing allowed

dnl other otherwise

######################################################################

R$* $: $1 $| @ $>"Rcpt_ok" $1

dnl temporary failure? remove mark @ and remember

R$* $| @ $#TEMP $+ $: $1 $| T $2

dnl error or ok (stop)

R$* $| @ $#$* $#$2

ifdef(`_PROMISCUOUS_RELAY_', `divert(-1)', `dnl')

R$* $| @ RELAY $@ RELAY

dnl something else: call check sender (relay)

R$* $| @ $* $: O $| $>"Relay_ok" $1

dnl temporary failure: call check sender (relay)

R$* $| T $+ $: T $2 $| $>"Relay_ok" $1

dnl temporary failure? return that

R$* $| $#TEMP $+ $#error $2

dnl error or ok (stop)

R$* $| $#$* $#$2

R$* $| RELAY $@ RELAY

dnl something else: return previous temp failure

R T $+ $| $* $#error $1

# anything else is bogus

R$* $#error $@ 5.7.1 $: confRELAY_MSG

divert(0)

######################################################################

### Rcpt_ok: is the recipient ok?

dnl input: recipient address (RCPT TO)

dnl output: see explanation at call

######################################################################

SRcpt_ok

ifdef(`_LOOSE_RELAY_CHECK_',`dnl

R$* $: $>CanonAddr $1

R$* < @ $* . > $1 < @ $2 > strip trailing dots',

`R$* $: $>ParseRecipient $1 strip relayable hosts')

ifdef(`_BESTMX_IS_LOCAL_',`dnl

ifelse(_BESTMX_IS_LOCAL_, `', `dnl

# unlimited bestmx

R$* < @ $* > $* $: $1 < @ $2 @@ $(bestmx $2 $) > $3',

`dnl

# limit bestmx to $=B

R$* < @ $* $=B > $* $: $1 < @ $2 $3 @@ $(bestmx $2 $3 $) > $4')

R$* $=O $* < @ $* @@ $=w . > $* $@ $>"Rcpt_ok" $1 $2 $3

R$* < @ $* @@ $=w . > $* $: $1 < @ $3 > $4

R$* < @ $* @@ $* > $* $: $1 < @ $2 > $4')

ifdef(`_BLACKLIST_RCPT_',`dnl

ifdef(`_ACCESS_TABLE_', `dnl

# blacklist local users or any host from receiving mail

R$* $: <?> $1

dnl user is now tagged with @ to be consistent with check_mail

dnl and to distinguish users from hosts (com would be host, com@ would be user)

R<?> $+ < @ $=w > $: <> <$1 < @ $2 >> $| <F:$1@$2> <U:$1@> <D:$2>

R<?> $+ < @ $* > $: <> <$1 < @ $2 >> $| <F:$1@$2> <D:$2>

R<?> $+ $: <> <$1> $| <U:$1@>

dnl $| is used as delimiter, otherwise false matches may occur: <user<@domain>>

dnl will only return user<@domain when "reversing" the args

R<> <$*> $| <$+> $: <@> <$1> $| $>SearchList <+ To> $| <$2> <>

R<@> <$*> $| <$*> $: <$2> <$1> reverse result

R<?> <$*> $: @ $1 mark address as no match

dnl we may have to filter here because otherwise some RHSs

dnl would be interpreted as generic error messages...

dnl error messages should be "tagged" by prefixing them with error: !

dnl that would make a lot of things easier.

R<$={Accept}> <$*> $: @ $2 mark address as no match

ifdef(`_ACCESS_SKIP_', `dnl

R<SKIP> <$*> $: @ $1 mark address as no match', `dnl')

ifdef(`_DELAY_COMPAT_8_10_',`dnl

dnl compatility with 8.11/8.10:

dnl we have to filter these because otherwise they would be interpreted

dnl as generic error message...

dnl error messages should be "tagged" by prefixing them with error: !

dnl that would make a lot of things easier.

dnl maybe we should stop checks already here (if SPAM_xyx)?

R<$={SpamTag}> <$*> $: @ $2 mark address as no match')

R<REJECT> $* $#error $@ 5.2.1 $: confRCPTREJ_MSG

R<DISCARD> $* $#discard $: discard

R<QUARANTINE:$+> $* $#error $@ quarantine $: $1

dnl error tag

R<ERROR:$-.$-.$-:$+> $* $#error $@ $1.$2.$3 $: $4

R<ERROR:$+> $* $#error $: $1

ifdef(`_ATMPF_', `R<_ATMPF_> $* $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

dnl generic error from access map

R<$+> $* $#error $: $1 error from access db

R@ $* $1 remove mark', `dnl')', `dnl')

ifdef(`_PROMISCUOUS_RELAY_', `divert(-1)', `dnl')

# authenticated via TLS?

R$* $: $1 $| $>RelayTLS client authenticated?

R$* $| $# $+ $# $2 error/ok?

R$* $| $* $: $1 no

R$* $: $1 $| $>"Local_Relay_Auth" $&{auth_type}

dnl workspace: localpart<@domain> $| result of Local_Relay_Auth

R$* $| $# $* $# $2

dnl if Local_Relay_Auth returns NO then do not check $={TrustAuthMech}

R$* $| NO $: $1

R$* $| $* $: $1 $| $&{auth_type}

dnl workspace: localpart<@domain> [ $| ${auth_type} ]

dnl empty ${auth_type}?

R$* $| $: $1

dnl mechanism ${auth_type} accepted?

dnl use $# to override further tests (delay_checks): see check_rcpt below

R$* $| $={TrustAuthMech} $# RELAY

dnl remove ${auth_type}

R$* $| $* $: $1

dnl workspace: localpart<@domain> | localpart

ifelse(defn(`_NO_UUCP_'), `r',

`R$* ! $* < @ $* > $: <REMOTE> $2 < @ BANG_PATH >

R$* ! $* $: <REMOTE> $2 < @ BANG_PATH >', `dnl')

# anything terminating locally is ok

ifdef(`_RELAY_ENTIRE_DOMAIN_', `dnl

R$+ < @ $* $=m > $@ RELAY', `dnl')

R$+ < @ $=w > $@ RELAY

ifdef(`_RELAY_HOSTS_ONLY_',

`R$+ < @ $=R > $@ RELAY

ifdef(`_ACCESS_TABLE_', `dnl

ifdef(`_RELAY_FULL_ADDR_', `dnl

R$+ < @ $+ > $: <$(access To:$1@$2 $: ? $)> <$1 < @ $2 >>

R<?> <$+ < @ $+ >> $: <$(access To:$2 $: ? $)> <$1 < @ $2 >>',`

R$+ < @ $+ > $: <$(access To:$2 $: ? $)> <$1 < @ $2 >>')

dnl workspace: <Result-of-lookup | ?> <localpart<@domain>>

R<?> <$+ < @ $+ >> $: <$(access $2 $: ? $)> <$1 < @ $2 >>',`dnl')',

`R$+ < @ $* $=R > $@ RELAY

ifdef(`_ACCESS_TABLE_', `dnl

ifdef(`_RELAY_FULL_ADDR_', `dnl

R$+ < @ $+ > $: $1 < @ $2 > $| $>SearchList <+ To> $| <F:$1@$2> <D:$2> <F:$1@> <>

R$+ < @ $+ > $| <$*> $: <$3> <$1 <@ $2>>

R$+ < @ $+ > $| $* $: <$3> <$1 <@ $2>>',

`R$+ < @ $+ > $: $>D <$2> <?> <+ To> <$1 < @ $2 >>')')')

ifdef(`_ACCESS_TABLE_', `dnl

dnl workspace: <Result-of-lookup | ?> <localpart<@domain>>

R<RELAY> $* $@ RELAY

ifdef(`_ATMPF_', `R<$* _ATMPF_> $* $#TEMP $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

R<$*> <$*> $: $2',`dnl')

ifdef(`_RELAY_MX_SERVED_', `dnl

# allow relaying for hosts which we MX serve

R$+ < @ $+ > $: < : $(mxserved $2 $) : > $1 < @ $2 >

dnl this must not necessarily happen if the client is checked first...

R< : $* <TEMP> : > $* $#TEMP $@ 4.4.0 $: "450 Can not check MX records for recipient host " $1

R<$* : $=w . : $*> $* $@ RELAY

R< : $* : > $* $: $2',

`dnl')

# check for local user (i.e. unqualified address)

R$* $: <?> $1

R<?> $* < @ $+ > $: <REMOTE> $1 < @ $2 >

# local user is ok

dnl is it really? the standard requires user@domain, not just user

dnl but we should accept it anyway (maybe making it an option:

dnl RequireFQDN ?)

dnl postmaster must be accepted without domain (DRUMS)

ifdef(`_REQUIRE_QUAL_RCPT_', `dnl

R<?> postmaster $@ OK

# require qualified recipient?

dnl prepend daemon_flags

R<?> $+ $: $&{daemon_flags} $| <?> $1

dnl workspace: ${daemon_flags} $| <?> localpart

dnl do not allow these at all or only from local systems?

dnl r flag? add client_name

R$* r $* $| <?> $+ $: < ? $&{client_name} > <?> $3

dnl no r flag: relay to local user (only local part)

# no qualified recipient required

R$* $| <?> $+ $@ RELAY

dnl client_name is empty

R<?> <?> $+ $@ RELAY

dnl client_name is local

R<? $=w> <?> $+ $@ RELAY

dnl client_name is not local

R<? $+> $+ $#error $@ 5.5.4 $: "553 Domain name required"', `dnl

dnl no qualified recipient required

R<?> $+ $@ RELAY')

dnl it is a remote user: remove mark and then check client

R<$+> $* $: $2

dnl currently the recipient address is not used below

######################################################################

### Relay_ok: is the relay/sender ok?

dnl input: ignored

dnl output: see explanation at call

######################################################################

SRelay_ok

# anything originating locally is ok

# check IP address

R$* $: $&{client_addr}

R$@ $@ RELAY originated locally

R0 $@ RELAY originated locally

R127.0.0.1 $@ RELAY originated locally

RIPv6:::1 $@ RELAY originated locally

R$=R $* $@ RELAY relayable IP address

ifdef(`_ACCESS_TABLE_', `dnl

R$* $: $>A <$1> <?> <+ Connect> <$1>

R<RELAY> $* $@ RELAY relayable IP address

ifdef(`_FFR_REJECT_IP_IN_CHECK_RCPT_',`dnl

dnl this will cause rejections in cases like:

dnl Connect:My.Host.Domain RELAY

dnl Connect:My.Net REJECT

dnl since in check_relay client_name is checked before client_addr

R<REJECT> $* $@ REJECT rejected IP address')

ifdef(`_ATMPF_', `R<_ATMPF_> $* $#TEMP $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

R<$*> <$*> $: $2', `dnl')

R$* $: [ $1 ] put brackets around it...

R$=w $@ RELAY ... and see if it is local

ifdef(`_RELAY_DB_FROM_', `define(`_RELAY_MAIL_FROM_', `1')')dnl

ifdef(`_RELAY_LOCAL_FROM_', `define(`_RELAY_MAIL_FROM_', `1')')dnl

ifdef(`_RELAY_MAIL_FROM_', `dnl

dnl input: {client_addr} or something "broken"

dnl just throw the input away; we do not need it.

# check whether FROM is allowed to use system as relay

R$* $: <?> $>CanonAddr $&f

R<?> $+ < @ $+ . > <?> $1 < @ $2 > remove trailing dot

ifdef(`_RELAY_LOCAL_FROM_', `dnl

# check whether local FROM is ok

R<?> $+ < @ $=w > $@ RELAY FROM local', `dnl')

ifdef(`_RELAY_DB_FROM_', `dnl

R<?> $+ < @ $+ > $: <@> $>SearchList <! From> $| <F:$1@$2> ifdef(`_RELAY_DB_FROM_DOMAIN_', ifdef(`_RELAY_HOSTS_ONLY_', `<E:$2>', `<D:$2>')) <>

R<@> <RELAY> $@ RELAY RELAY FROM sender ok

ifdef(`_ATMPF_', `R<@> <_ATMPF_> $#TEMP $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

', `dnl

ifdef(`_RELAY_DB_FROM_DOMAIN_',

`errprint(`*** ERROR: _RELAY_DB_FROM_DOMAIN_ requires _RELAY_DB_FROM_

')',

`dnl')

dnl')', `dnl')

dnl notice: the rulesets above do not leave a unique workspace behind.

dnl it does not matter in this case because the following rule ignores

dnl the input. otherwise these rules must "clean up" the workspace.

# check client name: first: did it resolve?

dnl input: ignored

R$* $: < $&{client_resolve} >

R<TEMP> $#TEMP $@ 4.4.0 $: "450 Relaying temporarily denied. Cannot resolve PTR record for " $&{client_addr}

R<FORGED> $#error $@ 5.7.1 $: "550 Relaying denied. IP name possibly forged " $&{client_name}

R<FAIL> $#error $@ 5.7.1 $: "550 Relaying denied. IP name lookup failed " $&{client_name}

dnl ${client_resolve} should be OK, so go ahead

R$* $: <@> $&{client_name}

dnl should not be necessary since it has been done for client_addr already

dnl this rule actually may cause a problem if {client_name} resolves to ""

dnl however, this should not happen since the forward lookup should fail

dnl and {client_resolve} should be TEMP or FAIL.

dnl nevertheless, removing the rule doesn't hurt.

dnl R<@> $@ RELAY

dnl workspace: <@> ${client_name} (not empty)

# pass to name server to make hostname canonical

R<@> $* $=P $:<?> $1 $2

R<@> $+ $:<?> $[ $1 $]

dnl workspace: <?> ${client_name} (canonified)

R$* . $1 strip trailing dots

ifdef(`_RELAY_ENTIRE_DOMAIN_', `dnl

R<?> $* $=m $@ RELAY', `dnl')

R<?> $=w $@ RELAY

ifdef(`_RELAY_HOSTS_ONLY_',

`R<?> $=R $@ RELAY

ifdef(`_ACCESS_TABLE_', `dnl

R<?> $* $: <$(access Connect:$1 $: ? $)> <$1>

R<?> <$*> $: <$(access $1 $: ? $)> <$1>',`dnl')',

`R<?> $* $=R $@ RELAY

ifdef(`_ACCESS_TABLE_', `dnl

R<?> $* $: $>D <$1> <?> <+ Connect> <$1>',`dnl')')

ifdef(`_ACCESS_TABLE_', `dnl

R<RELAY> $* $@ RELAY

ifdef(`_ATMPF_', `R<$* _ATMPF_> $* $#TEMP $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

R<$*> <$*> $: $2',`dnl')

dnl end of _PROMISCUOUS_RELAY_

divert(0)

ifdef(`_DELAY_CHECKS_',`dnl

# turn a canonical address in the form user<@domain>

# qualify unqual. addresses with $j

dnl it might have been only user (without <@domain>)

SFullAddr

R$* <@ $+ . > $1 <@ $2 >

R$* <@ $* > $@ $1 <@ $2 >

R$+ $@ $1 <@ $j >

SDelay_TLS_Clt

# authenticated?

dnl code repeated here from Basic_check_mail

dnl only called from check_rcpt in delay mode if checkrcpt returns $#

R$* $: $1 $| $>"tls_client" $&{verify} $| MAIL

R$* $| $#$+ $#$2

dnl return result from checkrcpt

R$* $| $* $# $1

R$* $# $1

SDelay_TLS_Clt2

# authenticated?

dnl code repeated here from Basic_check_mail

dnl only called from check_rcpt in delay mode if stopping due to Friend/Hater

R$* $: $1 $| $>"tls_client" $&{verify} $| MAIL

R$* $| $#$+ $#$2

dnl return result from friend/hater check

R$* $| $* $@ $1

R$* $@ $1

# call all necessary rulesets

Scheck_rcpt

dnl this test should be in the Basic_check_rcpt ruleset

dnl which is the correct DSN code?

# R$@ $#error $@ 5.1.3 $: "553 Recipient address required"

R$+ $: $1 $| $>checkrcpt $1

dnl now we can simply stop checks by returning "$# xyz" instead of just "ok"

dnl on error (or discard) stop now

R$+ $| $#error $* $#error $2

R$+ $| $#discard $* $#discard $2

dnl otherwise call tls_client; see above

R$+ $| $#$* $@ $>"Delay_TLS_Clt" $2

R$+ $| $* $: <?> $>FullAddr $>CanonAddr $1

ifdef(`_SPAM_FH_',

`dnl lookup user@ and user@address

ifdef(`_ACCESS_TABLE_', `',

`errprint(`*** ERROR: FEATURE(`delay_checks', `argument') requires FEATURE(`access_db')

')')dnl

dnl one of the next two rules is supposed to match

dnl this code has been copied from BLACKLIST... etc

dnl and simplified by omitting some < >.

R<?> $+ < @ $=w > $: <> $1 < @ $2 > $| <F: $1@$2 > <D: $2 > <U: $1@>

R<?> $+ < @ $* > $: <> $1 < @ $2 > $| <F: $1@$2 > <D: $2 >

dnl R<?> $@ something_is_very_wrong_here

# lookup the addresses only with Spam tag

R<> $* $| <$+> $: <@> $1 $| $>SearchList <! Spam> $| <$2> <>

R<@> $* $| $* $: $2 $1 reverse result

dnl', `dnl')

ifdef(`_SPAM_FRIEND_',

`# is the recipient a spam friend?

ifdef(`_SPAM_HATER_',

`errprint(`*** ERROR: define either Hater or Friend -- not both.

')', `dnl')

R<FRIEND> $+ $@ $>"Delay_TLS_Clt2" SPAMFRIEND

R<$*> $+ $: $2',

`dnl')

ifdef(`_SPAM_HATER_',

`# is the recipient no spam hater?

R<HATER> $+ $: $1 spam hater: continue checks

R<$*> $+ $@ $>"Delay_TLS_Clt2" NOSPAMHATER everyone else: stop

dnl',`dnl')

dnl run further checks: check_mail

dnl should we "clean up" $&f?

ifdef(`_FFR_MAIL_MACRO',

`R$* $: $1 $| $>checkmail $&{mail_from}',

`R$* $: $1 $| $>checkmail <$&f>')

dnl recipient (canonical format) $| result of checkmail

R$* $| $#$* $#$2

dnl run further checks: check_relay

R$* $| $* $: $1 $| $>checkrelay $&{client_name} $| $&{client_addr}

R$* $| $#$* $#$2

R$* $| $* $: $1

', `dnl')

ifdef(`_BLOCK_BAD_HELO_', `dnl

R$* $: $1 $| <$&{auth_authen}> Get auth info

dnl Bypass the test for users who have authenticated.

R$* $| <$+> $: $1 skip if auth

R$* $| <$*> $: $1 $| <$&{client_addr}> [$&s] Get connection info

dnl Bypass for local clients -- IP address starts with $=R

R$* $| <$=R $*> [$*] $: $1 skip if local client

dnl Bypass a "sendmail -bs" session, which use 0 for client ip address

R$* $| <0> [$*] $: $1 skip if sendmail -bs

dnl Reject our IP - assumes "[ip]" is in class $=w

R$* $| <$*> $=w $#error $@ 5.7.1 $:"550 bogus HELO name used: " $&s

dnl Reject our hostname

R$* $| <$*> [$=w] $#error $@ 5.7.1 $:"550 bogus HELO name used: " $&s

dnl Pass anything else with a "." in the domain parameter

R$* $| <$*> [$+.$+] $: $1 qualified domain ok

dnl Reject if there was no "." or only an initial or final "."

R$* $| <$*> [$*] $#error $@ 5.7.1 $:"550 bogus HELO name used: " $&s

dnl Clean up the workspace

R$* $| $* $: $1

', `dnl')

ifdef(`_ACCESS_TABLE_', `dnl', `divert(-1)')

######################################################################

### F: LookUpFull -- search for an entry in access database

###

### lookup of full key (which should be an address) and

### variations if +detail exists: +* and without +detail

###

### Parameters:

### <$1> -- key

### <$2> -- default (what to return if not found in db)

dnl must not be empty

### <$3> -- mark (must be <(!|+) single-token>)

### ! does lookup only with tag

### + does lookup with and without tag

### <$4> -- passthru (additional data passed unchanged through)

dnl returns: <default> <passthru>

dnl <result> <passthru>

######################################################################

SF

dnl workspace: <key> <def> <o tag> <thru>

dnl full lookup

dnl 2 3 4 5

R<$+> <$*> <$- $-> <$*> $: <$(access $4`'_TAG_DELIM_`'$1 $: ? $)> <$1> <$2> <$3 $4> <$5>

dnl no match, try without tag

dnl 1 2 3 4

R<?> <$+> <$*> <+ $-> <$*> $: <$(access $1 $: ? $)> <$1> <$2> <+ $3> <$4>

dnl no match, +detail: try +*

dnl 1 2 3 4 5 6 7

R<?> <$+ + $* @ $+> <$*> <$- $-> <$*>

$: <$(access $6`'_TAG_DELIM_`'$1+*@$3 $: ? $)> <$1+$2@$3> <$4> <$5 $6> <$7>

dnl no match, +detail: try +* without tag

dnl 1 2 3 4 5 6

R<?> <$+ + $* @ $+> <$*> <+ $-> <$*>

$: <$(access $1+*@$3 $: ? $)> <$1+$2@$3> <$4> <+ $5> <$6>

dnl no match, +detail: try without +detail

dnl 1 2 3 4 5 6 7

R<?> <$+ + $* @ $+> <$*> <$- $-> <$*>

$: <$(access $6`'_TAG_DELIM_`'$1@$3 $: ? $)> <$1+$2@$3> <$4> <$5 $6> <$7>

dnl no match, +detail: try without +detail and without tag

dnl 1 2 3 4 5 6

R<?> <$+ + $* @ $+> <$*> <+ $-> <$*>

$: <$(access $1@$3 $: ? $)> <$1+$2@$3> <$4> <+ $5> <$6>

dnl no match, return <default> <passthru>

dnl 1 2 3 4 5

R<?> <$+> <$*> <$- $-> <$*> $@ <$2> <$5>

ifdef(`_ATMPF_', `dnl tempfail?

dnl 2 3 4 5

R<$+ _ATMPF_> <$*> <$- $-> <$*> $@ <_ATMPF_> <$5>', `dnl')

dnl match, return <match> <passthru>

dnl 2 3 4 5

R<$+> <$*> <$- $-> <$*> $@ <$1> <$5>

######################################################################

### E: LookUpExact -- search for an entry in access database

###

### Parameters:

### <$1> -- key

### <$2> -- default (what to return if not found in db)

dnl must not be empty

### <$3> -- mark (must be <(!|+) single-token>)

### ! does lookup only with tag

### + does lookup with and without tag

### <$4> -- passthru (additional data passed unchanged through)

dnl returns: <default> <passthru>

dnl <result> <passthru>

######################################################################

SE

dnl 2 3 4 5

R<$*> <$*> <$- $-> <$*> $: <$(access $4`'_TAG_DELIM_`'$1 $: ? $)> <$1> <$2> <$3 $4> <$5>

dnl no match, try without tag

dnl 1 2 3 4

R<?> <$+> <$*> <+ $-> <$*> $: <$(access $1 $: ? $)> <$1> <$2> <+ $3> <$4>

dnl no match, return default passthru

dnl 1 2 3 4 5

R<?> <$+> <$*> <$- $-> <$*> $@ <$2> <$5>

ifdef(`_ATMPF_', `dnl tempfail?

dnl 2 3 4 5

R<$+ _ATMPF_> <$*> <$- $-> <$*> $@ <_ATMPF_> <$5>', `dnl')

dnl match, return <match> <passthru>

dnl 2 3 4 5

R<$+> <$*> <$- $-> <$*> $@ <$1> <$5>

######################################################################

### U: LookUpUser -- search for an entry in access database

###

### lookup of key (which should be a local part) and

### variations if +detail exists: +* and without +detail

###

### Parameters:

### <$1> -- key (user@)

### <$2> -- default (what to return if not found in db)

dnl must not be empty

### <$3> -- mark (must be <(!|+) single-token>)

### ! does lookup only with tag

### + does lookup with and without tag

### <$4> -- passthru (additional data passed unchanged through)

dnl returns: <default> <passthru>

dnl <result> <passthru>

######################################################################

SU

dnl user lookups are always with trailing @

dnl 2 3 4 5

R<$+> <$*> <$- $-> <$*> $: <$(access $4`'_TAG_DELIM_`'$1 $: ? $)> <$1> <$2> <$3 $4> <$5>

dnl no match, try without tag

dnl 1 2 3 4

R<?> <$+> <$*> <+ $-> <$*> $: <$(access $1 $: ? $)> <$1> <$2> <+ $3> <$4>

dnl do not remove the @ from the lookup:

dnl it is part of the +detail@ which is omitted for the lookup

dnl no match, +detail: try +*

dnl 1 2 3 4 5 6

R<?> <$+ + $* @> <$*> <$- $-> <$*>

$: <$(access $5`'_TAG_DELIM_`'$1+*@ $: ? $)> <$1+$2@> <$3> <$4 $5> <$6>

dnl no match, +detail: try +* without tag

dnl 1 2 3 4 5

R<?> <$+ + $* @> <$*> <+ $-> <$*>

$: <$(access $1+*@ $: ? $)> <$1+$2@> <$3> <+ $4> <$5>

dnl no match, +detail: try without +detail

dnl 1 2 3 4 5 6

R<?> <$+ + $* @> <$*> <$- $-> <$*>

$: <$(access $5`'_TAG_DELIM_`'$1@ $: ? $)> <$1+$2@> <$3> <$4 $5> <$6>

dnl no match, +detail: try without +detail and without tag

dnl 1 2 3 4 5

R<?> <$+ + $* @> <$*> <+ $-> <$*>

$: <$(access $1@ $: ? $)> <$1+$2@> <$3> <+ $4> <$5>

dnl no match, return <default> <passthru>

dnl 1 2 3 4 5

R<?> <$+> <$*> <$- $-> <$*> $@ <$2> <$5>

ifdef(`_ATMPF_', `dnl tempfail?

dnl 2 3 4 5

R<$+ _ATMPF_> <$*> <$- $-> <$*> $@ <_ATMPF_> <$5>', `dnl')

dnl match, return <match> <passthru>

dnl 2 3 4 5

R<$+> <$*> <$- $-> <$*> $@ <$1> <$5>

######################################################################

### SearchList: search a list of items in the access map

### Parameters:

### <exact tag> $| <mark:address> <mark:address> ... <>

dnl maybe we should have a @ (again) in front of the mark to

dnl avoid errorneous matches (with error messages?)

dnl if we can make sure that tag is always a single token

dnl then we can omit the delimiter $|, otherwise we need it

dnl to avoid errorneous matchs (first rule: D: if there

dnl is that mark somewhere in the list, it will be taken).

dnl moreover, we can do some tricks to enforce lookup with

dnl the tag only, e.g.:

### where "exact" is either "+" or "!":

### <+ TAG> lookup with and w/o tag

### <! TAG> lookup with tag

dnl Warning: + and ! should be in OperatorChars (otherwise there must be

dnl a blank between them and the tag.

### possible values for "mark" are:

### D: recursive host lookup (LookUpDomain)

dnl A: recursive address lookup (LookUpAddress) [not yet required]

### E: exact lookup, no modifications

### F: full lookup, try user+ext@domain and user@domain

### U: user lookup, try user+ext and user (input must have trailing @)

### return: <RHS of lookup> or <?> (not found)

######################################################################

# class with valid marks for SearchList

dnl if A is activated: add it

C{Src}E F D U ifdef(`_FFR_SRCHLIST_A', `A')

SSearchList

# just call the ruleset with the name of the tag... nice trick...

dnl 2 3 4

R<$+> $| <$={Src}:$*> <$*> $: <$1> $| <$4> $| $>$2 <$3> <?> <$1> <>

dnl workspace: <o tag> $| <rest> $| <result of lookup> <>

dnl no match and nothing left: return

R<$+> $| <> $| <?> <> $@ <?>

dnl no match but something left: continue

R<$+> $| <$+> $| <?> <> $@ $>SearchList <$1> $| <$2>

dnl match: return

R<$+> $| <$*> $| <$+> <> $@ <$3>

dnl return result from recursive invocation

R<$+> $| <$+> $@ <$2>

dnl endif _ACCESS_TABLE_

divert(0)

######################################################################

### trust_auth: is user trusted to authenticate as someone else?

###

### Parameters:

### $1: AUTH= parameter from MAIL command

######################################################################

dnl empty ruleset definition so it can be called

SLocal_trust_auth

Strust_auth

R$* $: $&{auth_type} $| $1

# required by RFC 2554 section 4.

R$@ $| $* $#error $@ 5.7.1 $: "550 not authenticated"

dnl seems to be useful...

R$* $| $&{auth_authen} $@ identical

R$* $| <$&{auth_authen}> $@ identical

dnl call user supplied code

R$* $| $* $: $1 $| $>"Local_trust_auth" $2

R$* $| $#$* $#$2

dnl default: error

R$* $#error $@ 5.7.1 $: "550 " $&{auth_authen} " not allowed to act as " $&{auth_author}

######################################################################

### Relay_Auth: allow relaying based on authentication?

###

### Parameters:

### $1: ${auth_type}

######################################################################

SLocal_Relay_Auth

######################################################################

### srv_features: which features to offer to a client?

### (done in server)

######################################################################

Ssrv_features

ifdef(`_LOCAL_SRV_FEATURES_', `dnl

R$* $: $1 $| $>"Local_srv_features" $1

R$* $| $#$* $#$2

R$* $| $* $: $1', `dnl')

ifdef(`_ACCESS_TABLE_', `dnl

R$* $: $>D <$&{client_name}> <?> <! SRV_FEAT_TAG> <>

R<?>$* $: $>A <$&{client_addr}> <?> <! SRV_FEAT_TAG> <>

R<?>$* $: <$(access SRV_FEAT_TAG`'_TAG_DELIM_ $: ? $)>

R<?>$* $@ OK

ifdef(`_ATMPF_', `dnl tempfail?

R<$* _ATMPF_>$* $#temp', `dnl')

R<$+>$* $# $1')

######################################################################

### try_tls: try to use STARTTLS?

### (done in client)

######################################################################

Stry_tls

ifdef(`_LOCAL_TRY_TLS_', `dnl

R$* $: $1 $| $>"Local_try_tls" $1

R$* $| $#$* $#$2

R$* $| $* $: $1', `dnl')

ifdef(`_ACCESS_TABLE_', `dnl

R$* $: $>D <$&{server_name}> <?> <! TLS_TRY_TAG> <>

R<?>$* $: $>A <$&{server_addr}> <?> <! TLS_TRY_TAG> <>

R<?>$* $: <$(access TLS_TRY_TAG`'_TAG_DELIM_ $: ? $)>

R<?>$* $@ OK

ifdef(`_ATMPF_', `dnl tempfail?

R<$* _ATMPF_>$* $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

R<NO>$* $#error $@ 5.7.1 $: "550 do not try TLS with " $&{server_name} " ["$&{server_addr}"]"')

######################################################################

### tls_rcpt: is connection with server "good" enough?

### (done in client, per recipient)

dnl called from deliver() before RCPT command

###

### Parameters:

### $1: recipient

######################################################################

Stls_rcpt

ifdef(`_LOCAL_TLS_RCPT_', `dnl

R$* $: $1 $| $>"Local_tls_rcpt" $1

R$* $| $#$* $#$2

R$* $| $* $: $1', `dnl')

ifdef(`_ACCESS_TABLE_', `dnl

dnl store name of other side

R$* $: $(macro {TLS_Name} $@ $&{server_name} $) $1

dnl canonify recipient address

R$+ $: <?> $>CanonAddr $1

dnl strip trailing dots

R<?> $+ < @ $+ . > <?> $1 <@ $2 >

dnl full address?

R<?> $+ < @ $+ > $: $1 <@ $2 > $| <F:$1@$2> <U:$1@> <D:$2> <E:>

dnl only localpart?

R<?> $+ $: $1 $| <U:$1@> <E:>

dnl look it up

dnl also look up a default value via E:

R$* $| $+ $: $1 $| $>SearchList <! TLS_RCPT_TAG> $| $2 <>

dnl found nothing: stop here

R$* $| <?> $@ OK

ifdef(`_ATMPF_', `dnl tempfail?

R$* $| <$* _ATMPF_> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

dnl use the generic routine (for now)

R$* $| <$+> $@ $>"TLS_connection" $&{verify} $| <$2>')

######################################################################

### tls_client: is connection with client "good" enough?

### (done in server)

###

### Parameters:

### ${verify} $| (MAIL|STARTTLS)

######################################################################

dnl MAIL: called from check_mail

dnl STARTTLS: called from smtp() after STARTTLS has been accepted

Stls_client

ifdef(`_LOCAL_TLS_CLIENT_', `dnl

R$* $: $1 <?> $>"Local_tls_client" $1

R$* <?> $#$* $#$2

R$* <?> $* $: $1', `dnl')

ifdef(`_ACCESS_TABLE_', `dnl

dnl store name of other side

R$* $: $(macro {TLS_Name} $@ $&{client_name} $) $1

dnl ignore second arg for now

dnl maybe use it to distinguish permanent/temporary error?

dnl if MAIL: permanent (STARTTLS has not been offered)

dnl if STARTTLS: temporary (offered but maybe failed)

R$* $| $* $: $1 $| $>D <$&{client_name}> <?> <! TLS_CLT_TAG> <>

R$* $| <?>$* $: $1 $| $>A <$&{client_addr}> <?> <! TLS_CLT_TAG> <>

dnl do a default lookup: just TLS_CLT_TAG

R$* $| <?>$* $: $1 $| <$(access TLS_CLT_TAG`'_TAG_DELIM_ $: ? $)>

ifdef(`_ATMPF_', `dnl tempfail?

R$* $| <$* _ATMPF_> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

R$* $@ $>"TLS_connection" $1', `dnl

R$* $| $* $@ $>"TLS_connection" $1')

######################################################################

### tls_server: is connection with server "good" enough?

### (done in client)

###

### Parameter:

### ${verify}

######################################################################

dnl i.e. has the server been authenticated and is encryption active?

dnl called from deliver() after STARTTLS command

Stls_server

ifdef(`_LOCAL_TLS_SERVER_', `dnl

R$* $: $1 $| $>"Local_tls_server" $1

R$* $| $#$* $#$2

R$* $| $* $: $1', `dnl')

ifdef(`_ACCESS_TABLE_', `dnl

dnl store name of other side

R$* $: $(macro {TLS_Name} $@ $&{server_name} $) $1

R$* $: $1 $| $>D <$&{server_name}> <?> <! TLS_SRV_TAG> <>

R$* $| <?>$* $: $1 $| $>A <$&{server_addr}> <?> <! TLS_SRV_TAG> <>

dnl do a default lookup: just TLS_SRV_TAG

R$* $| <?>$* $: $1 $| <$(access TLS_SRV_TAG`'_TAG_DELIM_ $: ? $)>

ifdef(`_ATMPF_', `dnl tempfail?

R$* $| <$* _ATMPF_> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

R$* $@ $>"TLS_connection" $1', `dnl

R$* $@ $>"TLS_connection" $1')

######################################################################

### TLS_connection: is TLS connection "good" enough?

###

### Parameters:

ifdef(`_ACCESS_TABLE_', `dnl

### ${verify} $| <Requirement> [<>]', `dnl

### ${verify}')

### Requirement: RHS from access map, may be ? for none.

dnl syntax for Requirement:

dnl [(PERM|TEMP)+] (VERIFY[:bits]|ENCR:bits) [+extensions]

dnl extensions: could be a list of further requirements

dnl for now: CN:string {cn_subject} == string

######################################################################

STLS_connection

ifdef(`_ACCESS_TABLE_', `dnl', `dnl use default error

dnl deal with TLS handshake failures: abort

RSOFTWARE $#error $@ ifdef(`TLS_PERM_ERR', `5.7.0', `4.7.0') $: "ifdef(`TLS_PERM_ERR', `503', `403') TLS handshake."

divert(-1)')

dnl common ruleset for tls_{client|server}

dnl input: ${verify} $| <ResultOfLookup> [<>]

dnl remove optional <>

R$* $| <$*>$* $: $1 $| <$2>

dnl workspace: ${verify} $| <ResultOfLookup>

# create the appropriate error codes

dnl permanent or temporary error?

R$* $| <PERM + $={Tls} $*> $: $1 $| <503:5.7.0> <$2 $3>

R$* $| <TEMP + $={Tls} $*> $: $1 $| <403:4.7.0> <$2 $3>

dnl default case depends on TLS_PERM_ERR

R$* $| <$={Tls} $*> $: $1 $| <ifdef(`TLS_PERM_ERR', `503:5.7.0', `403:4.7.0')> <$2 $3>

dnl workspace: ${verify} $| [<SMTP:ESC>] <ResultOfLookup>

# deal with TLS handshake failures: abort

RSOFTWARE $| <$-:$+> $* $#error $@ $2 $: $1 " TLS handshake failed."

dnl no <reply:dns> i.e. not requirements in the access map

dnl use default error

RSOFTWARE $| $* $#error $@ ifdef(`TLS_PERM_ERR', `5.7.0', `4.7.0') $: "ifdef(`TLS_PERM_ERR', `503', `403') TLS handshake failed."

# deal with TLS protocol errors: abort

RPROTOCOL $| <$-:$+> $* $#error $@ $2 $: $1 " STARTTLS failed."

dnl no <reply:dns> i.e. not requirements in the access map

dnl use default error

RPROTOCOL $| $* $#error $@ ifdef(`TLS_PERM_ERR', `5.7.0', `4.7.0') $: "ifdef(`TLS_PERM_ERR', `503', `403') STARTTLS failed."

R$* $| <$*> <VERIFY> $: <$2> <VERIFY> <> $1

dnl separate optional requirements

R$* $| <$*> <VERIFY + $+> $: <$2> <VERIFY> <$3> $1

R$* $| <$*> <$={Tls}:$->$* $: <$2> <$3:$4> <> $1

dnl separate optional requirements

R$* $| <$*> <$={Tls}:$- + $+>$* $: <$2> <$3:$4> <$5> $1

dnl some other value in access map: accept

dnl this also allows to override the default case (if used)

R$* $| $* $@ OK

# authentication required: give appropriate error

# other side did authenticate (via STARTTLS)

dnl workspace: <SMTP:ESC> <{VERIFY,ENCR}[:BITS]> <[extensions]> ${verify}

dnl only verification required and it succeeded

R<$*><VERIFY> <> OK $@ OK

dnl verification required and it succeeded but extensions are given

dnl change it to <SMTP:ESC> <REQ:0> <extensions>

R<$*><VERIFY> <$+> OK $: <$1> <REQ:0> <$2>

dnl verification required + some level of encryption

R<$*><VERIFY:$-> <$*> OK $: <$1> <REQ:$2> <$3>

dnl just some level of encryption required

R<$*><ENCR:$-> <$*> $* $: <$1> <REQ:$2> <$3>

dnl workspace:

dnl 1. <SMTP:ESC> <VERIFY [:bits]> <[extensions]> {verify} (!= OK)

dnl 2. <SMTP:ESC> <REQ:bits> <[extensions]>

dnl verification required but ${verify} is not set (case 1.)

R<$-:$+><VERIFY $*> <$*> $#error $@ $2 $: $1 " authentication required"

R<$-:$+><VERIFY $*> <$*> FAIL $#error $@ $2 $: $1 " authentication failed"

R<$-:$+><VERIFY $*> <$*> NO $#error $@ $2 $: $1 " not authenticated"

R<$-:$+><VERIFY $*> <$*> NOT $#error $@ $2 $: $1 " no authentication requested"

R<$-:$+><VERIFY $*> <$*> NONE $#error $@ $2 $: $1 " other side does not support STARTTLS"

dnl some other value for ${verify}

R<$-:$+><VERIFY $*> <$*> $+ $#error $@ $2 $: $1 " authentication failure " $4

dnl some level of encryption required: get the maximum level (case 2.)

R<$*><REQ:$-> <$*> $: <$1> <REQ:$2> <$3> $>max $&{cipher_bits} : $&{auth_ssf}

dnl compare required bits with actual bits

R<$*><REQ:$-> <$*> $- $: <$1> <$2:$4> <$3> $(arith l $@ $4 $@ $2 $)

R<$-:$+><$-:$-> <$*> TRUE $#error $@ $2 $: $1 " encryption too weak " $4 " less than " $3

dnl strength requirements fulfilled

dnl TLS Additional Requirements Separator

dnl this should be something which does not appear in the extensions itself

dnl @ could be part of a CN, DN, etc...

dnl use < > ? those are encoded in CN, DN, ...

define(`_TLS_ARS_', `++')dnl

dnl workspace:

dnl <SMTP:ESC> <REQ:bits> <extensions> result-of-compare

R<$-:$+><$-:$-> <$*> $* $: <$1:$2 _TLS_ARS_ $5>

dnl workspace: <SMTP:ESC _TLS_ARS_ extensions>

dnl continue: check extensions

R<$-:$+ _TLS_ARS_ > $@ OK

dnl split extensions into own list

R<$-:$+ _TLS_ARS_ $+ > $: <$1:$2> <$3>

R<$-:$+> < $+ _TLS_ARS_ $+ > <$1:$2> <$3> <$4>

R<$-:$+> $+ $@ $>"TLS_req" $3 $| <$1:$2>

######################################################################

### TLS_req: check additional TLS requirements

###

### Parameters: [<list> <of> <req>] $| <$-:$+>

### $-: SMTP reply code

### $+: Enhanced Status Code

dnl further requirements for this ruleset:

dnl name of "other side" is stored is {TLS_name} (client/server_name)

dnl

dnl currently only CN[:common_name] is implemented

dnl right now this is only a logical AND

dnl i.e. all requirements must be true

dnl how about an OR? CN must be X or CN must be Y or ..

dnl use a macro to compute this as a trivial sequential

dnl operations (no precedences etc)?

######################################################################

STLS_req

dnl no additional requirements: ok

R $| $+ $@ OK

dnl require CN: but no CN specified: use name of other side

R<CN> $* $| <$+> $: <CN:$&{TLS_Name}> $1 $| <$2>

dnl match, check rest

R<CN:$&{cn_subject}> $* $| <$+> $@ $>"TLS_req" $1 $| <$2>

dnl CN does not match

dnl 1 2 3 4

R<CN:$+> $* $| <$-:$+> $#error $@ $4 $: $3 " CN " $&{cn_subject} " does not match " $1

dnl cert subject

R<CS:$&{cert_subject}> $* $| <$+> $@ $>"TLS_req" $1 $| <$2>

dnl CS does not match

dnl 1 2 3 4

R<CS:$+> $* $| <$-:$+> $#error $@ $4 $: $3 " Cert Subject " $&{cert_subject} " does not match " $1

dnl match, check rest

R<CI:$&{cert_issuer}> $* $| <$+> $@ $>"TLS_req" $1 $| <$2>

dnl CI does not match

dnl 1 2 3 4

R<CI:$+> $* $| <$-:$+> $#error $@ $4 $: $3 " Cert Issuer " $&{cert_issuer} " does not match " $1

dnl return from recursive call

ROK $@ OK

######################################################################

### max: return the maximum of two values separated by :

###

### Parameters: [$-]:[$-]

######################################################################

Smax

R: $: 0

R:$- $: $1

R$-: $: $1

R$-:$- $: $(arith l $@ $1 $@ $2 $) : $1 : $2

RTRUE:$-:$- $: $2

R$-:$-:$- $: $2

dnl endif _ACCESS_TABLE_

divert(0)

######################################################################

### RelayTLS: allow relaying based on TLS authentication

###

### Parameters:

### none

######################################################################

SRelayTLS

# authenticated?

dnl we do not allow relaying for anyone who can present a cert

dnl signed by a "trusted" CA. For example, even if we put verisigns

dnl CA in CertPath so we can authenticate users, we do not allow

dnl them to abuse our server (they might be easier to get hold of,

dnl but anyway).

dnl so here is the trick: if the verification succeeded

dnl we look up the cert issuer in the access map

dnl (maybe after extracting a part with a regular expression)

dnl if this returns RELAY we relay without further questions

dnl if it returns SUBJECT we perform a similar check on the

dnl cert subject.

ifdef(`_ACCESS_TABLE_', `dnl

R$* $: <?> $&{verify}

R<?> OK $: OK authenticated: continue

R<?> $* $@ NO not authenticated

ifdef(`_CERT_REGEX_ISSUER_', `dnl

R$* $: $(CERTIssuer $&{cert_issuer} $)',

`R$* $: $&{cert_issuer}')

R$+ $: $(access CERTISSUER`'_TAG_DELIM_`'$1 $)

dnl use $# to stop further checks (delay_check)

RRELAY $# RELAY

ifdef(`_CERT_REGEX_SUBJECT_', `dnl

RSUBJECT $: <@> $(CERTSubject $&{cert_subject} $)',

`RSUBJECT $: <@> $&{cert_subject}')

R<@> $+ $: <@> $(access CERTSUBJECT`'_TAG_DELIM_`'$1 $)

R<@> RELAY $# RELAY

R$* $: NO', `dnl')

######################################################################

### authinfo: lookup authinfo in the access map

###

### Parameters:

### $1: {server_name}

### $2: {server_addr}

dnl both are currently ignored

dnl if it should be done via another map, we either need to restrict

dnl functionality (it calls D and A) or copy those rulesets (or add another

dnl parameter which I want to avoid, it's quite complex already)

######################################################################

dnl omit this ruleset if neither is defined?

dnl it causes DefaultAuthInfo to be ignored

dnl (which may be considered a good thing).

Sauthinfo

ifdef(`_AUTHINFO_TABLE_', `dnl

R$* $: <$(authinfo AuthInfo:$&{server_name} $: ? $)>

R<?> $: <$(authinfo AuthInfo:$&{server_addr} $: ? $)>

R<?> $: <$(authinfo AuthInfo: $: ? $)>

R<?> $@ no no authinfo available

R<$*> $# $1

dnl', `dnl

ifdef(`_ACCESS_TABLE_', `dnl

R$* $: $1 $| $>D <$&{server_name}> <?> <! AuthInfo> <>

R$* $| <?>$* $: $1 $| $>A <$&{server_addr}> <?> <! AuthInfo> <>

R$* $| <?>$* $: $1 $| <$(access AuthInfo`'_TAG_DELIM_ $: ? $)> <>

R$* $| <?>$* $@ no no authinfo available

R$* $| <$*> <> $# $2

dnl', `dnl')')

ifdef(`_RATE_CONTROL_',`dnl

######################################################################

### RateControl:

### Parameters: ignored

### return: $#error or OK

######################################################################

SRateControl

ifdef(`_ACCESS_TABLE_', `dnl

R$* $: <A:$&{client_addr}> <E:>

dnl also look up a default value via E:

R$+ $: $>SearchList <! ClientRate> $| $1 <>

dnl found nothing: stop here

R<?> $@ OK

ifdef(`_ATMPF_', `dnl tempfail?

R<$* _ATMPF_> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

dnl use the generic routine (for now)

R<0> $@ OK no limit

R<$+> $: <$1> $| $(arith l $@ $1 $@ $&{client_rate} $)

dnl log this? Connection rate $&{client_rate} exceeds limit $1.

R<$+> $| TRUE $#error $@ 4.3.2 $: _RATE_CONTROL_REPLY Connection rate limit exceeded.

')')

ifdef(`_CONN_CONTROL_',`dnl

######################################################################

### ConnControl:

### Parameters: ignored

### return: $#error or OK

######################################################################

SConnControl

ifdef(`_ACCESS_TABLE_', `dnl

R$* $: <A:$&{client_addr}> <E:>

dnl also look up a default value via E:

R$+ $: $>SearchList <! ClientConn> $| $1 <>

dnl found nothing: stop here

R<?> $@ OK

ifdef(`_ATMPF_', `dnl tempfail?

R<$* _ATMPF_> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."', `dnl')

dnl use the generic routine (for now)

R<0> $@ OK no limit

R<$+> $: <$1> $| $(arith l $@ $1 $@ $&{client_connections} $)

dnl log this: Open connections $&{client_connections} exceeds limit $1.

R<$+> $| TRUE $#error $@ 4.3.2 $: _CONN_CONTROL_REPLY Too many open connections.

')')

undivert(9)dnl LOCAL_RULESETS

#

######################################################################

######################################################################

#####

`##### MAIL FILTER DEFINITIONS'

#####

######################################################################

######################################################################

_MAIL_FILTERS_

#

######################################################################

######################################################################

#####

`##### MAILER DEFINITIONS'

#####

######################################################################

######################################################################

undivert(7)dnl MAILER_DEFINITIONS