Our Enterprise Anti-Spam solution could be considered the absolute best SPAM and VIRUS fighting weapon that the world has ever known thet we implemented.

It includes RBL, Bayesian filter, HMM, DCC, Razor2, Dkim, HELO, SPF, PTR, MX & A record checks, an advanced Penalty box, Delaying/Greylisting , URIBL , BombRe, automatic and personal whitelisting/blacklist,  SPAM Scoring mode, Sender base checks, Country check, antivirus integration, SPAM reports, high end spambox collection, nospam tags, and more ...