Kerio MailServer 5.7.9 - Mail Server

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There's a lot to like about Kerio MailServer, an almost fully featured mail server with a strong emphasis on security and universal accessibility.


  • Kerio MailServer offers strong security and anti-spam measures
  • Kerio MailServer is rich in features, power, and versatility
  • Comes with a nice and useful web interface


  • Kerio MailServer lacks full mailing list support
  • Scheduling could be more flexible


  • Kerio MailServer offers SMTP, POP, IMAP, LDAP, Web and WAP services for multiple domains.
  • All protocols support secure SSL connections, and Kerio works with multiple virus scanners.
  • Spam protection through sender verification including Caller ID, blackhole lists and SpamAssassin.
  • Shared folders and flexible server-side filtering available via IMAP and WebMail.
  • Kerio MailServer can retrieve and sort mail from remote POP accounts.
  • Kerio MailServer supports NT domain or Active Directory authentication.
  • Provides automatic replies and scheduled server backup, monitors disk space.
  • Via LDAP, IMAP and Web-based access Kerio MailServer supports shared folders and address books.
  • Kerio MailServer supports Windows, Linux, and Mac OS X.

Expert Review - Kerio MailServer 5.7.9 - Mail Server

Kerio MailServer has two concepts written on its banner: security and universal accessibility. There's a lot to like about these concepts, and there's a lot to like about how Kerio MailServer implements them.

Kerio MailServer supports multiple virus scanners, has a nice backup facility and supports TLS/SSL connections for all access methods. Apropos access: in addition to the standard POP/SMTP services Kerio MailServer offers IMAP and LDAP as well as functional web-based access. All three provide shared folders and Kerio MailServer lets you set up server-side filters.

Kerio MailServer's anti-spam measures are impressive, too: SMTP authentication, blackhole list support, throttling, Caller ID support and SpamAssassin filtering including Bayesian analysis for a high spam detection rate while keeping false positives few.