Alligate AntiSpam Gateway 3.8.6
Alligate Version 3 is a fully self contained, stand alone, SMTP Gateway Server for Microsoft Windows servers.
It installs between your mail server and the Internet and handles all incoming traffic, significantly reducing spam while protecting your mail server from all forms of email attacks, backscatter, and other abuses. Supports Microsoft Exchange as well as all other SMTP mail servers. Fully functioning 30-day free trial.