I moved a mailbox from Exchange 2007 SP3 to 2010 for testing. Now I want to move it back to Exchange 2007. In Exchange 2010 I do not get the options to new local or new remote move. The commandlet new mailbox move isn't working. When I try to make the move using Exchange 2007 I get the error Summary: 1 item(s).0 succeeded, 1 failed. Elapsed time: 00:00:01 Tracy Cleeton Failed Error: Error was found for Tracy Cleeton (tcleeton@sagacom.com) because: Error occurred in the step: Opening source mailbox. Failed to open mailbox with error: An unknown error has occurred., error code: -1056749262 Exchange Management Shell command attempted: 'Saga.dom/Saga/Corporate/Users/Business Users/Tracy cleeton' | move-mailbox -TargetDatabase 'SDCMAIL01\First Storage Group\DB01' Elapsed Time: 00:00:01

Hi, To remove the mailbox from exchange 2010 to exchange 2007, please use EMS: New-MoveRequest -Identity 'tony@alpineskihouse.com' -TargetDatabase DBPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT

What is the format for DB? Do I need to put the server, information store, and database instance? I have tried this command a couple of times using just the name of the DB (DB01), and the request indicates that it was accepted successfully. It then shows up in the management council as pending -- but never actually moves. Tracy

Hi Tracy, The move will be performed in background. We cannot move a mailbox if it is still listed under "Move request". You can clear the move request then the 'new local move request' will be available when you right click the mailbox: 1. Open exchange 2010 EMC, expand to Recipient configuration->Move request. Make sure that all move requests are completed. 2. Right click Move request and click “Clear Move request”. Then you will be able to re-move the mailbox. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT