Microsoft Exchange Server 2007

Are you confused by Microsoft Exchange Server 2007 licensing and features? You are not alone! Here's a quick run down which covers many of the questions our customers have asked since the January 2007 release:

• Licensing Model: An Exchange Server license is required for each operating system environment running Exchange Server. A CAL is required for each user or device accessing Exchange Server.


• Exchange Server Licenses/Features: You can select between Exchange Standard or Exchange Enterprise. While both editions offer unlimited software storage (dependent on hardware) and local continuous replication, only Exchange Server 2007 Enterprise allows cluster continuous replication and single copy clusters. In addition, Exchange Standard supports only 5 storage groups and 5 databases, while the Enterprise Edition allows for 50 of each.


• Exchange CAL Basics: CALs can be purchased on a 'per user' or 'per device' basis. Please note the CALs are issued on a permanent basis, not concurrently. A CAL is required for each user or device that accesses the server. If you aren't sure which is more beneficial for you, compare your total number of users and devices and go with the lower number.


• Standard CAL vs. Enterprise CAL: An Exchange Standard CAL is the base CAL, which gives you rights to e-mail, shared calendaring, and Outlook Web Access (OWA). You can choose to add-on to each Standard CAL by purchasing the Enterprise CAL. The Enterprise CAL offers rights to unified messaging, list journaling, managed e-mail folders, Exchange hosted filtering, and Forefront Security for Exchange Server.


• Licensing Changes: Unlike prior versions, devices and users who have an Exchange CAL are not automatically granted rights to use MS Outlook. With Exchange 2007, only those who had active Software Assurance coverage as of November 30, 2006 have this right (thanks for the forewarning Microsoft). There are more details to this, but I won't bore you with them as most people do not have SA coverage on Exchange.

I hope this brief run down has been helpful. Naturally, there are numerous caveats that I haven't covered. Please feel free to contact our experts or post a response if you would like more information or clarification.