I assume the error is an issue with my postfix configuration. I've followed the steps in the instructions here to set up apache/postfix/mailman.
Real domain replaced with mydomain.com I've created a default mail list called mailman. When I send an email to mailman@mydomain.com I get the error "Recipient address rejected: User unknown in local recipient table" in the mail.log.
550 5.1.1 <mailman@mydomain.com>: Recipient address rejected: User unknown in local recipient table; from=<-----@gmail.com> to=<mailman@mydomain.com> proto=ESMTP helo=<mail-wi0-f174.google.com>
Excerpts from my postfix/main.cf:
myhostname = mydomain.com
mydestination = mydomain.com, localhost
inet_protocols = ipv4
relay_domains = mydomain.com
transport_maps = hash:/etc/postfix/transport
mailman_destination_recipient_limit = 1
Excerpts from /etc/postfix/transport
mydomain.com mailman:
Excerpt from postfix/master.cf
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
If I understand correctly how it should work...
- mail comes in to mydomain.com
- postfix validates the hostname against $myhostname
- postfix finds mydomain.com under relay_domains
- postfix relays the mail to the transport listed under transport_maps
- failing here? the postmap table finds that mailman@mydomain.com matches mydomain.com
- postmap directs the mail to the mailman: transport defined in master.cf
- the transport mailman: calls postfix-to-mailman.py, and mailman handles the mail