Qmail

With Avira MailGate you prevent onward routing of infectious emails and your corporate network remains protected against unwanted and contaminated mail. All incoming and outgoing SMTP data traffic including attachments is scanned in real-time.Avira MailGate Suite checks the complete incoming and outgoing SMTP data traffic in real-time against viruses, spyware and other dangerous contents. Integrated Avira AntiSpam and Outbreak Detection.

Innovative server based AntiSPAM Solution. Incl. SPF Support! Does not depend on IIS or Exchange. Works together with every SMTP Server. Mail archiving, Remote Black-/Whitelist, relaxed greylisting, scriptengine and lots of more features supported. Does not accept spam. Rejects spam before reaching the SMTP server. Now also with POP3 downl.