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Microsoft 365 Blog
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Cross-tenant mailbox migration in now in Public Preview

ScottSchnoll's avatar
ScottSchnoll
Icon for Microsoft rankMicrosoft
Sep 22, 2020
Historically, when an Exchange Online admin needed to move mailboxes from one tenant to another, the typical way to do that was to offboard the mailbox from the source tenant and import it into a tar...
Updated Feb 08, 2023
Version 9.0
admin
exchange
Urs01's avatar
Urs01
Copper Contributor
Feb 12, 2021

I have also the problem with the missing X500 address on the target mailuser.  After manualy adding the x500 address the migration works for the testuser. 

 

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.

 

Has someone already a script adding the missing X500 address to the target mailuser.

 

thank you