The Exchange 2003 Move Mailbox Wizard

Be aware that corrupted data items that the wizard deletes before reaching the threshold are permanently deleted and aren't recoverable. Consequently, if you don't back up the source database before you start the move mailbox operation, you won't be able to recover corrupted items that the wizard encounters and deletes.

If you don't want to tolerate any problem items during the move operation, you can have processing of that mailbox terminate immediately by selecting a corrupted-items threshold of 0. Then, when the Move Mailbox Wizard encounters a corrupt item, the wizard will move on to process the next mailbox. Because a corrupted item usually means that the Exchange database is corrupted, running the Eseutil utility might resolve the problem.

Status Updates and Reporting
After a mailbox move session is finished, the Move Mailbox Wizard will produce a detailed XML report of the move. The wizard will display information about pending moves, moves currently in progress, failed moves, and completed moves. The report also displays the amount of time remaining before a scheduled move operation will begin and elapsed times for moves. You can analyze the report offline or incorporate it into other reporting or administrative systems. To manipulate the report's data, you can simply use a custom XML style sheet. . . .