OpenProtect
by Opencomputing Technologies Pvt Ltd.
Platforms: FreeBSD, Linux, NetBSD, OpenBSD
Categories: Email, Policy Enforcement, Utilities
Version: 5.0.4
URL: http://openprotect.com
Opencomputing's OpenProtect is an integrated server side email filtering

solution offering antivirus, antispam and content filtering abilities at the MTA (postfix, sendmail, qmail, exim) level.

With OpenProtect, you can protect your organisation from all email

threats (virus, spam, phishing) and control content (want to filter

password protected zip files? Allow only encrypted emails? disarm HTML

emails and a myraid of other options) at the server level. Available as

GPL/Free software with Commercial support and antivirus plugin.