System: Debian Buster Install: Functioning Postfix w/ Dovecot using PostfixAdmin for virtual domain and mailbox management
Definitions: Host.TLD = my server's domain name; List.TLD = listserv's domain name; ListName = list's name.
Issue: Postfix LMTP does not pass messages onto MM3:LMTP. Instead the behavior summary is as follows:
postfix/lmtp[...]: ###: to=mailman3:[127.0.0.1]:8024@Host.TLD, orig_to=ListName-confirm+###@ListServer.TLD, relay=Host.TLD[private/dovecot-lmtp], delay=439, delays=439/0.03/0.01/0.01, dsn=5.1.1, status=bounced (host Host.TLD[private/dovecot-lmtp] said: 550 5.1.1 <"mailman3:[127.0.0.1]:8024"@Host.TLD> User doesn't exist: mailman3:[127.0.0.1]:8024@Host.TLD (in reply to RCPT TO command))
The problem appears to be that Postfix defaults the relay to being private/dovecot-lmtp and not the general lmtp protocol or the mailman3 dedicated lmtp protocol.
Details:
# cat /proc/version Linux version 4.19.0-5-amd64 (debian-kernel@lists.debian.org) (gcc version 8.3.0 (Debian 8.3.0-6)) #1 SMP Debian 4.19.37-5+deb10u1 (2019-07-19)
# postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes compatibility_level = 2 debug_peer_level = 4 html_directory = /usr/share/doc/postfix/html inet_interfaces = all inet_protocols = ipv4 local_recipient_maps = $virtual_mailbox_maps,regexp:/var/lib/mailman3/data/postfix_lmtp local_transport = virtual mailbox_size_limit = 0 mydestination = localhost myhostname = rijr.com mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myorigin = /etc/mailname owner_request_special = no policy-spf_time_limit = 3600s readme_directory = /usr/share/doc/postfix recipient_delimiter = + relay_domains = $mydestination,regexp:/var/lib/mailman3/data/postfix_domains relayhost = smtp_tls_loglevel = 1 smtp_tls_security_level = may smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = $mydomain smtpd_sasl_path = private/auth smtpd_sasl_security_options = noanonymous smtpd_sasl_tls_security_options = $smtpd_sasl_security_options smtpd_sasl_type = dovecot smtpd_tls_auth_only = yes smtpd_tls_cert_file = /etc/ssl/private/vmail.crt smtpd_tls_key_file = /etc/ssl/private/vmail.key smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes transport_maps = hash:/etc/postfix/transport,regexp:/var/lib/mailman3/data/postfix_lmtp virtual_alias_domains = proxy:mysql:/etc/postfix/virtual_alias_domains.cf virtual_alias_maps = proxy:mysql:/etc/postfix/virtual_alias_maps.cf,proxy:mysql:/etc/postfix/virtual_alias_domains_maps.cf,regexp:/var/lib/mailman3/data/postfix_lmtp virtual_gid_maps = static:5000 virtual_mailbox_base = /home/vmail virtual_mailbox_domains = proxy:mysql:/etc/postfix/virtual_mailbox_domains.cf virtual_mailbox_limit = 512000000 virtual_mailbox_maps = regexp:/var/lib/mailman3/data/postfix_lmtp,proxy:mysql:/etc/postfix/virtual_mailbox_maps.cf virtual_minimum_uid = 5000 virtual_transport = lmtp:unix:private/dovecot-lmtp virtual_uid_maps = static:5000
# cat master.cf [grep'd for lmtp and mailman3] lmtp unix - - y - - lmtp
mailman3 unix - - - - - lmtp -o lmtp_send_xforward_command=yes -o disable_dns_lookups=yes
# cat mailman.cfg [mta section only] [mta] incoming: mailman.mta.postfix.LMTP outgoing: mailman.mta.deliver.deliver smtp_host: localhost smtp_port: 25 lmtp_host: 127.0.0.1 lmtp_port: 8024 configuration: /etc/mailman3/postfix-mailman.cfg
# cat /var/lib/mailman3/data/postfix_lmtp # AUTOMATICALLY GENERATED BY MAILMAN ON 2019-08-06 06:39:21 # # This file is generated by Mailman, and is kept in sync with the binary hash # file. YOU SHOULD NOT MANUALLY EDIT THIS FILE unless you know what you're # doing, and can keep the two files properly in sync. If you screw it up, # you're on your own.
# Aliases which are visible only in the @List.TLD domain. /^List@List\.TLD$/ mailman3:[127.0.0.1]:8024 /^List-bounces(\+.*)?@List\.TLD$/ mailman3:[127.0.0.1]:8024 /^List-confirm(\+.*)?@List\.TLD$/ mailman3:[127.0.0.1]:8024 /^List-join@List\.TLD$/ mailman3:[127.0.0.1]:8024 /^List-leave@List\.TLD$/ mailman3:[127.0.0.1]:8024 /^List-owner@List\.TLD$/ mailman3:[127.0.0.1]:8024 /^List-request@List\.TLD$/ mailman3:[127.0.0.1]:8024 /^List-subscribe@List\.TLD$/ mailman3:[127.0.0.1]:8024 /^List-unsubscribe@List\.TLD$/ mailman3:[127.0.0.1]:8024
# cat postfix-mailman.cfg [postfix] # if I don't have postmap_command set, mailman errors out, even though transport_file_type is regex. postmap_command: /usr/sbin/postmap transport_file_type: regex
# cat mail.debug
Aug 6 01:03:28 Host dovecot: lmtp(23055): Connect from local Aug 6 01:03:28 Host dovecot: auth: Debug: master in: USER#0112#011mailman3:[127.0.0.1]:8024@Host.TLD#011service=lmtp Aug 6 01:03:28 Host dovecot: auth: userdb(?): Username character disallowed by auth_username_chars: 0x3a (username: mailman3:[127.0.0.1]:8024@Host.TLD) Aug 6 01:03:28 Host dovecot: auth: Debug: userdb out: NOTFOUND#0112 Aug 6 01:03:28 Host postfix/cleanup[22970]: 2937FB0: message-id=20190806080328.2937FB0@rijr.com Aug 6 01:03:28 Host postfix/lmtp[23054]: CA030AA: to=mailman3:[127.0.0.1]:8024@rijr.com, orig_to=gilman-clan-confirm+51c0564a95aa31a8840305bec77e9023baa46477@List.TLD, relay=Host.TLD[private/dovecot-lmtp], delay=439, delays=439/0.03/0.01/0.01, dsn=5.1.1, status=bounced (host Host.TLD[private/dovecot-lmtp] said: 550 5.1.1 <"mailman3:[127.0.0.1]:8024"@Host.TLD> User doesn't exist: mailman3:[127.0.0.1]:8024@Host.TLD (in reply to RCPT TO command)) Aug 6 01:03:28 Host dovecot: lmtp(23050): Disconnect from local: Client has quit the connection (state=READY) Aug 6 01:03:28 Host postfix/lmtp[22981]: C0EEEA8: to=mailman3:[127.0.0.1]:8024@Host.TLD, orig_to=ListName-confirm+51c0564a95aa31a8840305bec77e9023baa46477@List.TLD, relay=Host.TLD[private/dovecot-lmtp], delay=566, delays=566/0.04/0.01/0.01, dsn=5.1.1, status=bounced (host Host.com[private/dovecot-lmtp] said: 550 5.1.1 <"mailman3:[127.0.0.1]:8024"@Host.TLD> User doesn't exist: mailman3:[127.0.0.1]:8024@Host.TLD (in reply to RCPT TO command))
I have played with dozens of variations on the configuration files and tracing what is going on. The only reason I see that relay=Host.TLD[private/dovecot-lmtp] is because of: virtual_transport = lmtp:unix:private/dovecot-lmtp
Hopefully I can get this figured out ....
- Jay