There are a few other useful tips with shared mailboxes. The first is hiding the mailbox from the GAL so other people inside the organization can’t see it: In The existing report, we evaluation the usage of the PowerShell command that we use for creating and controlling shared mailbox in http://sccm-deployment-user-expe50594.look4blog.com/13385530/the-ultimate-guide-to-get-all-shared-mailboxes-information