The SMTP address has no mailbox associated with it




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    Kalleo Technologies

    "In other rare cases, the address book has not been rebuilt to include recently created mailboxes, and so cannot resolve a valid email address."


    Do you have a solution for these "rare" cases?

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    Rob Latino

    Hi Kalleo Technologies,

    The address book is updated approximately every 24 hours. The solution is to wait for the address book to be updated. If you are still experiencing the problem even after waiting a day, then we suggest opening a support ticket here, so that we can take a closer look at your scenario:

    Thank you.

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    Zaact DevOps

    I have ensured that I am the owner on the mailbox.  But the migration still fails.  I have tried both WITH and WITHOUT impersonation, and it still fails.  The error says that the mailbox does not exist, but it does.  What other things have people tried?  This is very frustrating!

  • Avatar
    Rob Latino

    Hi Zaact DevOps,

    This will require further assistance from one of our support engineers. Please submit a support ticket at the URL listed below. A support engineer will get in touch with you and provide you with additional guidance to resolve your specific issue.


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