divert(-1)

#

# Copyright (c) 1998-2002, 2005-2007 Sendmail, Inc. and its suppliers.

# All rights reserved.

#

# 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.

#

# ident "%Z%%M% %I% %E% SMI"

#

ifdef(`DNSBL_MAP', `', `define(`DNSBL_MAP', `dns -R A')')

divert(0)

ifdef(`_DNSBL_R_',`dnl',`dnl

VERSIONID(`$Id: dnsbl.m4,v 8.33 2007/01/05 18:49:29 ca Exp $')

define(`_DNSBL_R_',`')

ifelse(defn(`_ARG_'), `',

`errprint(`*** ERROR: missing argument for FEATURE(`dnsbl')')')

LOCAL_CONFIG

# map for DNS based blacklist lookups

Kdnsbl DNSBL_MAP -T<TMP>ifdef(`DNSBL_MAP_OPT',` DNSBL_MAP_OPT')')

divert(-1)

define(`_DNSBL_SRV_', `_ARG_')dnl

define(`_DNSBL_MSG_', `ifelse(len(X`'_ARG2_),`1',`"550 Rejected: " $`'&{client_addr} " listed at '_DNSBL_SRV_`"',`_ARG2_')')dnl

define(`_DNSBL_MSG_TMP_', `ifelse(_ARG3_,`t',`"451 Temporary lookup failure of " $`'&{client_addr} " at '_DNSBL_SRV_`"',`_ARG3_')')dnl

divert(8)

# DNS based IP address spam list _DNSBL_SRV_

R$* $: $&{client_addr}

R$-.$-.$-.$- $: <?> $(dnsbl $4.$3.$2.$1._DNSBL_SRV_. $: OK $)

R<?>OK $: OKSOFAR

ifelse(len(X`'_ARG3_),`1',

`R<?>$+<TMP> $: TMPOK',

`R<?>$+<TMP> $#error $@ 4.4.3 $: _DNSBL_MSG_TMP_')

ifelse(`X'_ARG2_,`Xquarantine',

`R<?>$+ $#error $@ quarantine $: _DNSBL_SRV_',

`X'_ARG2_,`Xdiscard',

`R<?>$+ $#discard $: _DNSBL_SRV_',

`R<?>$+ $#error $@ 5.7.1 $: _DNSBL_MSG_')

divert(-1)