Postfix w/Bayesian Filtering and Anti-Backscatter (Relay Recipients), Apache, Mysql, Dnsmasq, MailScanner (Spamassassin, ClamAV, Pyzor, Razor, DCC-Client), MailWatch, SPF Checks, FuzzyOcr, Sanesecurity Signatures, SQLGrey, KAM, Scamnailer, FireHOL (Iptables Firewall), Relay Recipients, Webmin (Optional), Outgoing Disclaimer with alterMIME (Optional)
I didn't get to a second reading.