1) how much administration does postfix actually need once its setup? From what I have seen so far, with our previous Fedora Postfix setup and the new Centos one, that once the initial configuration is done Postfix requires very little tweaking or am I missing something? We have thought of using a ldap service for the group address list and I think that could be used for various maps/list need by postfix which we think will reduce the maintenance effort. I am currently reading up on
Postfix requires almost zero maintenance. Solid as rock. Just update software if critical security holes are found..
2) Webmin and its addons, for postfix administration - good, bad or blah?
Very bad and buggy..
3) We currently have all our members configured as virtual users with all their email stored as maildir stores under /var/mail/example.com. We are considering giving each member a personal space, probably under /home (there would be no local login allowed. If we decide to go in this direction would it be a "good" idea to store the mail in a maildir under the individual user /home directory?
Maybe. Just make sure that apache or similar software cannot access maildir for security reasons..
-- Eero