Hi, I've been running Postfix+MM3 setup for a while now. However it turns out one portion of functionality has been broken all this time: member subscription via "confirmation".
Quick notes on setup: I've got 2 VMs:
smtp.my.com mailman.my.com
I'm running mailing lists under:
lists.my.com DNS for lists.my.com A: - same as mailman.my.com MX: - smtp.my.com
So when somebody sends a message to foo@lists.my.com they receive confirmation email (which is fine and normal). That mail suggests user needs to reply to foo-confirm+randomstuff@lists.my.com. Whenever user does that - postfix refuses to deliver *that* mail with reason:
Action: failed Status: 5.4.6 Diagnostic-Code: X-Postfix; mail for lists.my.com loops back to myself
I've got
transport_maps = regexp:/opt/mailman/core/var/data/postfix_lmtp local_recipient_maps = regexp:/opt/mailman/core/var/data/postfix_lmtp relay_domains = regexp:/opt/mailman/core/var/data/postfix_domains
and
postfix_domains contains: /^lists\.my\.com$/ lists.my.com
and postfix_lmtp contains: foo@lists\.my\.com$/ lmtp:[mailman.my.com]:8024 ...
what am I missing?
-- Sr System and DevOps Engineer SoM IRT