Hybrid. Can't move the mailbox to EXO

Андрей Михалевский 3,356 Reputation points
2021-09-21T14:44:28.33+00:00

Hello. The creator of the tenant has a mailbox in EXO before setting up the hybrid configuration.

134061-screenshot-1.png

It is exactly the same as on the local server.
133909-screenshot-2.png

Therefore, when moving from local server to EXO, I can't do it. What to do ?

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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Accepted answer
  1. Andy David - MVP 150.4K Reputation points MVP
    2021-09-21T15:06:48.39+00:00

    OK, but its the same user, yes?

    If so, then remove the Exchange License in Azure.
    Then run this:
    Set-User <user> -PermanentlyClearPreviousMailboxInfo

    https://techcommunity.microsoft.com/t5/exchange-team-blog/permanently-clear-previous-mailbox-info/ba-p/607619

    Warning: This will remove the mailbox in 365 forever!!

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  1. Андрей Михалевский 3,356 Reputation points
    2021-09-22T07:43:33.527+00:00

    The box is deleted, but now when I send an email from EXO to a local server, to this recipient, I get a bounce back that the recipient is not found.

    I found that because of this local account in Office365, the account in Active Directory is not synchronized in AAD.

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