Need IMAP server admin advice

Hi all.

I am in the process of setting up an IMAP server, but have some questions
before I get things finalized. (pardon any newbie-ish-isms). I have all
(well, most, but close enough) this stuff running, I just need some advice
on the admin side.

SEtup: RH9: fetchmail->procmail->spamassassin->clamAV->courierIMAP.
15 or so users.

Question 1:
What's the recommended way to setup procmail? /etc/procmail or
/home/procmailrc? I would think /etc/procmail, but what if certain users
need filtering that others don't? I'd hate to have to update all the
individual procmailrc's. Is the best way to setup a recipie based on sender
and recipient? (Note: obviously new to procmail.)

Question 2:
Kinda related to 1: Is there a way to let users setup mail filters? (Assume
all the users are idiots who are not given login access to the mail
server.) Or do I, as admin, need to have each one request a new mail filter
for their account (based on sender, subject, etc) as they need them?

Question 3:
Is there a way to prevent the users from deleting certain folders on the
server? ie: I want to make sure mail from the boss always ends up in the
"FromTheBoss" folder. Mail client filters don't work since it never
actually retrieves the mail.

Question 4:
Any heads-up type of things I should know about or be prepared for?

Thanks,
john



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