May 26, 2018
Proxy for SMTP sessions with virus and spam scan
This software block SMTP sessions used by e-mail worms and viruses on the NAPT router. It depends on netfilter framework of Linux, or ipfw on FreeBSD.
It acts like proxy, intercepting outgoing SMTP connections and scanning session data on-the-fly. When messages is infected, the SMTP session is terminated. It’s to be used mostly by ISPs, so they can eliminate infected hosts from their net work, and preferably educate their users.