When to Move arbitration mailboxes ?

BCL 831 Reputation points
2021-05-18T19:53:11.477+00:00

Hello all,
I'm on the "Move arbitration mailboxes" step of my 2013EX to 2019EX migration.
However it's been suggested that I not move the arbitration mailboxes till after I move the user mailboxes.
Does it matter?

Thanks in advance. B

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Andy David - MVP 142.6K Reputation points MVP
    2021-05-18T19:56:31.113+00:00

    You should move them first, before you move user mailboxes.

    https://blog.rmilne.ca/2016/09/15/when-to-move-arbitration-mailboxes/

    Arbitration mailboxes must be moved at the beginning of the project, before moving user mailboxes onto the new version of Exchange. It is expected and required that the arbitration mailboxes are moved to the latest version of exchange unless a specific article discusses an issue.

    If you fail to do this simple step, then big issues are heading your way. They include:

    Administrator actions are not saved to the administrator audit log
    Cannot run E-Discovery searches
    Unified Messaging prompts may not function as expected

    1 person found this answer helpful.

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