Missing x500 or LegacyExchangeDN from source mailbox

Arve 76 Reputation points


I get the following error when running a migration batch with one user.
One or more X500 proxy addresses or legacyExchangeDN of source mailbox are missing on target MEU as X500 proxy address.

The source does not contain any x500 addresses.
The other emailaddresses are the same on both source mailbox and target mailuser.

Must I create a X500 address on both source and tenant?
Or is there something else that might be the problem of this?

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Andy David - MVP 120.5K Reputation points MVP

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