I'm just going to start with a new mail server, and I think courier
seems to be great for me. Unfortunatelly I didn't find a really good
howto for using postfix + maildrop and courier-imap. Hope you can help
There isn't much to do. If you need virtual users, compile maildrop with
--with-db=db and Postfix with DB support and point Postfix'
local_recipient_maps or virtual_mailbox_maps to the same data base that
maildrop uses, you may need to add a symlink from userdb.dat to
userdb.db and specify hash:/etc/userdb.
Other than that, use mailbox_command if you need .forward-style forwards
(this doesn't work for virtual users) or define a maildrop transport
(documentation ships with recent Postfix releases) and apply my patch
from http://mandree.home.pages.de/postfix/fix-maildrop-NO_USER.diff to
make sure that locally injected or generated mail (sendmail command,
bounces to local users) bounces rather than lingering in the queue for a