Free Software

IceWarp Unified Communications Server for Windows & Linux delivers a highly integrated solution, including Mail server with dual Anti-Spam & Anti-Virus protection, GroupWare Server, Instant Messaging Server, a unified WebClient interface, and mobile access.

This is the Windows release

http://www.icewarp.com/unified_communications/

DOWNLOAD Icewarp Unified Communications Server (aka Merak Mailserver)

http://rapidshare.com/files/368625589/mrak107.rar