Re:What about my personal mail server? (Score 1)

At work we use Linux sendmail as our mail gateway and have it virus/spam filter it before it arrives into the Exchange mail server. (and mail that is sent from the Exchange server is relayed through the Linux server on it's way out) It works extremely well. We can keep all the groupware features offered by the Outlook/Exchange combination in for our Windows-using employees while keeping the Exchange server away from public. There are also some e-mail spam filtering/virus filtering hardware appliances that are worth a look. SpamAssassin is indeed extremely cool, and so is ClamAV (make sure you keep both up to date) Bottom line, just keep Exchange away from the WAN.