Download CleanMail Server
Designed and developed by byteplant, CleanMail Server is an anti-spam application that is intended to help users secure their system and data from security threats posed by various spam applications and content. Available on a free to try basis, for a limited duration of 30 days, you can implement this tool in various Windows systems such as Windows 2000, 2003, 2008, 7, XP, Vista, and Server versions. This utility offers support for SMTP as well as POP3 mail applications and can integrated in the existing email environment. Some of the prominent features of this tool are remote blacklist filter (DNSBL), Windows orientation, attachment blocker, and open source SpamAssassin filter. You can also, optionally, download the ClamWin anti-virus package.