How to remove stuck mailbox move

When Remove-moverequest fails

1. Open ADSIEDIT and navigate to the OU where your broken user account is stored. (Under: Default Naming Context)
2. Locate the user account, right-click on it and then choose “Properties”.
3. Click on the “Filter” button and make sure “Show only attributes that have values” is checked.
4. Scroll down the attributes and search for an entry called “msExchMailboxMoveRemoteHostName”.
5. Click on the “Edit” button.
6. Click on the “Clear” button.
7. Click the “OK” button.

SOURCE: http://www.nonstop.co.il/kb/view.php?kb=66

http://social.technet.microsoft.com/Forums/exchange/en-US/8462635d-0eda-472c-a644-cc2810727288/cant-remove-move-request-failed-to-communicate-with-the-mailbox-database