Tony Dietrich wrote:
[SNIP]
This also gives you the chance to run procmail on the incoming mail to the local mail server to weed out any spam, and your local users can use
I'd recommend that you use postfix (plus Courier IMAP/POP3) with spamassassin and sophos/NAI anti-virus, the set-ups for which are well-documented. We use all the above and are very happy with performance, flexibility and the ability to automate installs. I've used procmail recipes for anti-spam, and they are simply ineffective against most spam these days. To be specific, most spam is now in MIME format, and/or html, and in the latter case, spam trigger words, like FREE are rendered as FR<!--- xxx --->EE in the html, causing procmail to miss them. No doubt a procmail wizard will tell me I'm wrong, but life's too short when there's a tool like spamassassin which sorts it all out, unpacks zips et al, undoes and examines MIME, and defangs html.
Cheers, Laurie.