[TriLUG] Email Setup

[Steve Hoffman]

Been doing quite a bit of research on MTA's and retrieval daemons for
email, but I wanted to know what other people are using.

We basically host email for several hundred domains and are using Exim
as the MTA in mbox format with tpop3d to pick mail up, throw a little
pop-before-smtp in there and viola...our setup.

Basically all I'm trying to do is add IMAP (timapd would have been
perfect but doesn't exist yet) for these virtual users, but none of
them seem to support mbox format or are configurable enough to use our
current directory structure (ex /etc/virtual/domain.com/passwd,
/var/spool/virtual/domain.com/user, etc)  So if I'm going to convert
mailboxes then I might as well look into redoing the whole shebang!

So what can I use that's relatively easy to setup and very reliable
for multiple domains.  Would prefer RPM based, since this will run on
RHEL3, but I'll do source too.

TIA,
Steve