ECMSquared is a Full Featured SMTP/POP3/IMAP system for unix-based servers.
Exim • CourierIMAP • MySql • SpamAssassin • Clam AntiVirus

The components underlying ECMSquared are all based on open-source software.
The integration and advanced, adaptive algorithms for spam/virus prevention and management of all the pieces is sold as a Managed Service.

About ECMSquared