lmtp: local: Use recipient index in lmtp_local_rcpt_reply_overquota(). When used during the DATA command, it should send a reply for the correct recipient. During the RCPT command there is only one reply due. Added assert that checks this.

lmtp: local: Add explicit cmd parameter to lmtp_local_rcpt_reply_overquota(). Using the RCPT cmd is only valid for the RCPT command and not when quota excess is detected during DATA. That would cause a segmentation fault, since rcpt->rcpt.rcpt_cmd == NULL.

lmtp: local: Make local variable for rcpt->rcpt.rcpt_cmd in lmtp_local_rcpt_check_quota().

lmtp: local: Don't deliver more than once to the same recipient. Duplicate RCPT TO commands for local recipients are now mostly ignored, by repeating the reply for the first instance of that RCPT TO command.

lmtp: Add recipient type to struct lmtp_recipient.

lmtp: Move common recipient handling code to separate file.

lmtp: local: Fix segfault occurring when quota is exceeded.

Updated copyright notices to include the year 2018.

lmtp: local: Properly handle a user being over quota. Recent changes caused quota enforcement to be ineffective.

lmtp: local: Make sure pending recipient is always destroyed. Before, the recipient was not freed when the server/connection ended prematurely.

lib-storage: mail-user: Added more information about the client connection. Submission service will need it to pass to the backend MTA in XCLIENT and for creating the "Received:" header.

lmtp: Ported to use lib-smtp/server. Implicitly fixes handling of multi-line replies from proxy backend. Implicitly adds support for mixing local and proxy recipients. Implicitly adds support for SMTP CHUNKING. RCPT failures are reported back to the client immediately, rather than waiting for the DATA command.

lmtp: local: Renamed error variables in lmtp_local_rcpt_check_quota() to match other code.

lmtp: local: Allocate recipients on the default pool, rather than the client state pool. This prevents the pool from growing potentially indefinitely with failed recipients.

lmtp: Split off local delivery in a struct separate from the client. This mimics proxy delivery, making the implementation better structured.

lmtp: local: Renamed local variable "dest_user" to "rcpt_user" in lmtp_local_deliver(). This matches the rcpt_user field in struct mail_deliver_context.

lmtp: local: Created local variable for service_user in lmtp_local_deliver().

lmtp: local: Renamed trans variable in lmtp_local_open_raw_mail(). Preparation for new trans parameter.

lmtp: local: Renamed client_deliver_to_rcpts() to lmtp_local_deliver_to_rcpts().

lmtp: client: Dropped useless rcpt_idx state. Recent refactoring made it obsolete.

lmtp: local: Always handle sending of error replies inside lmtp_rcpt_to_is_over_quota(). Code was confusing.

lmtp: local: Renamed cmd_rcpt_finish() to lmtp_local_rcpt_anvil_finish().

lmtp: local: Renamed rcpt_anvil_lookup_callback() to lmtp_local_rcpt_anvil_cb().

lmtp: commands: Moved RCPT command handling relating to local recipients to lmtp-local.c.

lmtp: client: Moved recipient deinitialization to lmtp-local.c.

lmtp: local: Renamed lmtp_rcpt_to_is_over_quota() to lmtp_local_rcpt_check_quota().

lmtp: local: Renamed client_input_data_write_local() to lmtp_local_data().

lmtp: local: Renamed client_open_raw_mail() to lmtp_local_open_raw_mail().

lmtp: local: Renamed client_deliver() to lmtp_local_deliver().

lmtp: local: Renamed client_rcpt_anvil_disconnect() to lmtp_local_rcpt_anvil_disconnect().

lmtp: Renamed struct mail_recipient to struct lmtp_recipient.

lmtp: local: Added structural comments.

lmtp: Moved client_input_data_write_local() from commands.c to lmtp-local.c.

lmtp: Moved client_open_raw_mail() from commands.c to lmtp-local.c.

lmtp: Moved client_rcpt_fail_all() from commands.c to lmtp-local.c.

lmtp: Moved client_deliver_to_rcpts() from commands.c to lmtp-local.c.

lmtp: Moved client_deliver() from commands.c to lmtp-local.c.

lmtp: Moved rcpt_anvil_lookup_callback() from commands.c to lmtp-local.c.

lmtp: Moved cmd_rcpt_finish() from commands.c to lmtp-local.c.

lmtp: Moved client_rcpt_anvil_disconnect() from client.c to lmtp-local.c.