How to Tell Which Users Have an ActiveSync Partnership

It's always good to know who is using the technology we support. I have a customer who needed to know which users were utilizing Windows Mobile devices to access their Exchange servers.


Here's a one-liner PowerShell command that reports which users have ActiveSync partnerships configured in Exchange 2007:

Get-CASMailbox WHERE {$_.HasActiveSyncDevicePartnership} SELECT identity

In Exchange 2003, it's not quite that simple. The ActiveSync partnership is stored in a hidden folder within the user's Exchange mailbox. This folder can be exposed using mfcmapi (the Microsoft Exchange Server MAPI Editor).

Mailboxes do not have the hidden Microsoft-Server-ActiveSync folder by default. Once an ActiveSync partnership has been configured from the user's Windows Mobile device, the following folder structure is created under the Root Container:


Note that PocketPC may show as SmartPhone, depending on the device used.

While mfcmapi can view the Root Container structure for an individual maibox, this is not feasible for a multi-user enterprise. I contacted Microsoft PSS for a solution, but they said there was no way to do this programmatically. Fortunately, I found this excellent vbscript written by Glen Scales that does exactly what I was looking for.

Here's an example of the output that the script produces:

Viola! Just what the doctor ordered!

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