finally you can get full email server solution with all features of Exchange mail server from microsoft
working over Imap
Kerio MailServer is a state-of-the-art groupware server allowing companies to collaborate via email, shared contacts, shared calendars and tasks.
Uniquely designed for easy deployment and easy administration, Kerio MailServer provides comprehensive features and integrated tools. Read more...
Kerio MailServer unifies access to email, calendar and contacts by synchronizing wirelessly with smartphones. Supported mobile platforms include Treo with Palm OS, Windows Mobile®, Symbian and BlackBerry. Read more...
Dual anti-virus control provides administrators with the ability to use both the integrated McAfee Anti-Virus and one of several external virus scanning products (Avast, AVG, eTrust, NOD32, Sophos, Symantec, and Clam AV) for stronger protection. Read more...
A combination of content-based SpamAssassin and sender-based anti-spam tools in Kerio MailServer significantly reduces the amount of unwanted email, helping to limit the legal hassles and security risks associated with spam. Read more...
As a Microsoft Exchange alternative, Kerio MailServer provides access to shared calendars, shared contacts and email from Microsoft® Outlook, Microsoft Entourage, and Kerio WebMail, while delivering lower TCO and a better overall email management experience for SMBs. Read more...
Kerio WebMail & Kerio WebMail Mini
Two different web-based email clients, one with the look and feel of Microsoft Outlook and the other optimized for viewing email on PDA devices, provide users with both comfort and speed while working from most modern web browsers, including Safari and Firefox. Read more...
Supported operating systems
Kerio MailServer runs on Windows 2000/XP/2003/Vista, server and non-server editions, Red Hat Linux, SUSE Linux and Mac OS X. Kerio Outlook Connector for Microsoft Outlook runs on Windows 2000/XP/2003/Vista. Kerio MailServer also comes in a Fedora Core 6 virtual appliance. Read more...