Asked for a query to get a summary of the Outlook Clients that are connecting to our Exchange server. The following Code will run against all mailboxes in a specific OU, but removing the filter will get all mailboxes on an Exchange server.
Your final results will include a count of the client versions in your environment. As you can see, each of our CIO dept has a Blackberry device (hence 2 MAPI Outlook client versions) and is running Outlook 2003 SP3 (Google 11.0.8161).
For example:
Count Name
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