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BATV is a good Tool, but unfortunately not implemented by Exchange as it is not RFC Standard. For that reason the BATV tag for outgoing OoO messages is removed which causes these OoO messages to be blocked by the receiving MTA.
Recover Deleted Items shows only the items deleted, but you loose the Folder Structure. To really help the Backup Team you should include this information.
Many organizations use shared mailboxes to get a people independent Mailbox for a team. In Outlook you have automapping of those mailboxes, but when you want to access it from your smartphone it is not possible as Activesync does not allow you to access shared mailboxes