UPDATE NOV 1, 2022: Cross-tenant mailbox migration is now generally available! See Cross-tenant User Data Migration is Now Generally Available for details.
Historically, wh...
Updated Jan 07, 2025
Version 10.0
Blog Post
I am unable to migrate a test mailbox based on this issue:
Error: MigrationPermanentException: One or more X500 proxy addresses or legacyExchangeDN of source mailbox are missing on target MEU as X500 proxy address. --> One or more X500 proxy addresses or legacyExchangeDN of source mailbox are missing on target MEU as X500 proxy address.
I have verified that the x500 address (there's only one) has been applied to the MEU object. Removed and reapplied but cannot get past this error which makes me think this may not actually be the issue.
Any ideas and what I can do to get past this?
Thanks,
-Scott
UPDATE:
Roman mailto:crosstenantmigrationpreview@service.microsoft.com investigated and pointed out what should have been obvious to me that I had not included ALL x500 addresses from Source tenant object. After adding the other x500 address, not just the LegacyExchangeDN, the mailbox was successfully migrated.
Thank you Roman!