I have a Hybrid, Exchange 2010 SP3 environment with a 4 member DAG. All of our mailboxes have been migrated. We now have taken two mailbox servers (two member DAG) and the other two are off line with data still on them. A user purged a mailbox that have been migrated to the 365 Cloud. It is no longer in the Recycle bin. This occured less than 10 days ago. Is there way to get the old mailbox data back from the Exchange servers that are no longer part of the DAG (On-Prem)? Archiving was not in place at the time. Can I work with the two off-line Exchange servers in stand-alone mode to see if data can be extracted, perhaps using Export-mailbox? When I do Get-recipient of the mailbox in question on the one of the two active Servers, it returns 'mail-user' - which means the user has no mailbox On-Prem.