For some reason when I moved the mailman configuration a few months ago
I had to add /etc/mailman/aliases to the alias_maps e.g.,:
alias_maps = hash:/etc/aliases
whereas on the old installation I didn't. Since this is on a server
that can fail over to another server that has the IMAP configuration
doesn't need /etc/mailman/aliases I would like to see if there is a
workaround so that they both have the same postfix configuration. Sorry
if this is more of a postfix question but I didn't get an answer on
their list yet.
Basically trying to get the /etc/postfix/main.cf files identical so I
don't have to manage the differences and bounce postfix on failover.