I am performing a cutover migration to Office365 from my Exchange 2003 server and one use has failed with the message: Failed to update one of the recipient properties. Couldn't find object "/o=First Organization/ou=first administrative group/cn=Recipients/cn=lmahony". Please make sure that it was spelled correctly or specify a different object.
The username is: aogara and not lmahony so this seems to be the issue. I'm assuming the account was renamed at some point.
I have checked all the Exchange attributes and I have run adsiedit and checked the value for exchangelegacyDN but this is showing as: /o=First Organization/ou=first administrative group/cn=Recipients/cn=aogara which should be correct.
Is there something else I need to check, like I said all the values in ADUC look ok.
Any other suggestions? If I remove the Exchange attributes and add them again through AD will it mess up the mailbox or is this safe to do?