In what may not have been the smartest move of all time (influenced by
me!), my company is using Cyrus-IMAPd as our IMAP server, and Sendmail as
our SMTP server.

It works very well, but we get a lot of spam and I'd like to get
SpamAssassin working well too. Since the user's don't have login accounts,
a .procmailrc file cannot be created for each user.

I would appreciate any tips on where to look for information on how to
configure such a setup. We're using Red Hat Enterprise 3.0 for the moment.
Hopefully switching to 4.0 soon. The default configuration files don't
seem to do anything worthwhile.

Many thanks,
Chris