Exchange New-MoveRequest Failing


Unable to move large mailboxes to O365 when TMGISAUAG is acting a a F/W between on-premise Exchange and Exchange Online.


Informational: The request has been temporarily postponed because the mailbox is locked, request will continue at xx:xx:xx


Add all of the IP ranges noted in the following:


Forefront TMG console -> Intrusion Prevention System -> Behavioural Intrusion Detection -> Configure Flood Mitigation Settings.

Apply Configuration Change, wait and then the move request will continue if it has failed resume or create a new request

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