Hi,

im trying to setup mailman and have an issue:

first my environment:

• I’m running postfix etc with "mailcow-dockerized": https://mailcow.github.io/mailcow-dockerized-docs/
• I’m running mailman with "docker-mailman": https://asynchronous.in/docker-mailman/

I got almost everything working besides confirm mails (see my other mail), but I had to use another postfix configuration than recommended, I’m wondering why the recommended way didn’t work. Sidenote: I’m not a postfix expert.

This is recommended:

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

This didn’t work, all mails to mailman were rejected. Postfix did not even check the “local_recipient_maps”. After a lot of reading that made sense to me, because when I understand it correctly, “local_recipient_maps” is only checked for domains in “mydestinations”. And there I only have localhost.

My first change then was to use “relay_recipient_maps” instead of “local_recipient_maps”, because the domains were also added to the relay configuration "relay_domains". That worked. But then I noticed warnings by postfix about having the same domain in “virtual_mailbox_domains” and “relay_domains”. Made sense again because I used the same domain in my “normal” mail setup (with “virtual_mailbox_domains”) and in mailman.

So finally I ended up with adding the mailman files to “virtual_mailbox_domains” and “virtual_mailbox_maps” instead of “relay_domains” and “local_recipient_maps”.

Do my findings and changes make sense to you? Or do I miss something important? Good thing is that at least “transport_maps” worked for whatever configuration I used :)

Thanks and greetings,

Marc