In February this year I wrote about how to disable the automatic mapping of shared mailboxes in Exchange 2010 SP1, using a custom PowerShell script that “wraps” the Add-MailboxPermission command and after execution, removes the attribute in Active Directory that is used to automatically mount the mailbox in Outlook.

With Exchange 2010 SP2 and SP3, there’s great news – this workaround is no longer required, as in SP2 a new parameter has been added to the native cmdlet.

Check out the updated article here, and stay tuned for a future article explaining how to extend this functionality to the Exchange Management Console 🙂