As described on the ASSP and WIKI website, ASSP could be considered the best SPAM and VIRUS combat weapon the world has ever known.
ASSP includes RBL checks, Bayesian filter, HELO SPF PTR MX A records checks, an advanced penalty box, greylisting, URIBL, BombRe, automatic whitelist, SPAM Scoring mode, ClamAV antivirus integration, SPAM reports, Plus.