Spam Assassin
Ø www.spamassassin.org
Ø Includes:
Ø Complex rule-based content analyzer
Ø RBL lookups (subscription required)
Ø Support for Razor, DCC, & Pyzor checking
Ø No training required
Ø False positives can be mitigated by
adjusting threshold and whitelists
Ø Can be installed site-wide and customized
per user