Yesterday, amidst the SlingMobile débâcle and an OS update, Kerio Technologies released Kerio Mail MailServer 6.7. The mail and collaboration server, often used as a replacement for Exchange, has added several new features, including a few geared toward Mac users.

The Kerio Global Address List (GAL) is a new feature that provides a simple way to get address and contact info from clients like Outlook or Entourage. It syncs and authenticates with both Microsoft Active Directory and Apple Open Directory, as well as Kerio's own user directory. In any company, people join and leave the group, and users are often required to manually update their address books to add and remove entries. With GAL, it's a single directory in a single place, and changes are transparent for users. It supports Entourage, works with the iPhone and functions offline.

Kerio MailServer 6.7 also comes with an auto-configuration script for Entourage 2008, downloadable within the Kerio client, providing pre-configured account setup. There's support for private events in iCal, allowing users to maintain personal schedules without requiring a separate calendar application. AddressBook gets some additional love with support for synchronizing groups (which become Categories in Entourage).

Kerio has had good support for iPhone users for a while now. For non-iPhone mobile users, there's new support for viewing HTML emails on Nokia devices, as well as DataViz RoadSync compatibility.

The MailServer itself is now a certified VMWare appliance, and promotes compatibility with two new Linux distributions: Ubuntu 8 and Debian 5. CentOS is the preferred platform for running on VMWare. IT admins and users alike will appreciate the dramatically improved anti-spam engine, which has been optimized for multi-CPU use, parallel processing of email messages for large queues, improved heuristics and 13 layers of spam protection.

In addition to some of the previously available migration tools provided by Kerio, a new IMAP migration tool relieves what is undoubtedly one of the biggest headaches in switching mail servers: keeping your old mail. It's a cross-platform utility which moves messages, folders, accounts and domains from the old system to Kerio MailServer. The IMAP migration tool has been fully tested with OS X.

Kerio's pricing has remained the same with this release. Starting at $499 for 10 users, there's a range of options available for different configurations and add-ons, as well as subscription pricing. See Kerio's pricing page for more details.