I have an Exchange 2000 server and an Exchange 2007 server. I am trying to migrate/move mailboxes from the 2000 server to the 2007 server using the Move Mailbox GUI from the 2007 server. About half of them have worked without a hitch, but the other half fail. The error message I get is "Error Code -1056749164 - Error occured in the step: Moving messages to the destination mailbox store with error: MAPI or an unspecified service provider."
I have set it to skip the corrupt items list as high as 100000 but the same result. There seems to be no common denominator with the accounts I'm trying to move. They are all in the same domain on the same server. Any help will be greatly appreciated.