Recommended MTA Setup
I am interested in setting up a mail server to handle mail for multiple domains. I am currently doing research and would like advice.
First off, POP3, and SMTP must obviously be supported. It must have some sort of anti-spam measure (Is SpamAssassin adequate?), and a decent virus protection (Is ClamAv adequate?). It must be able to support sending and recieving mail from multiple domains.
Do you use sendmail, qmail, or postfix, or something altogether different?
Any help and recommendations would be appreciated.