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how to import email from another server migrate from IMAP into an existing (but different) email

riverrunsthroughit 0 Reputation points
2023-01-30T09:02:22.9066667+00:00

We have an old email address (******@bxxxt.com) and a new domain email set up on microsoft office 365. I would like to migrate the emails from the last month into the new ******@domain.com

I have set up the migration batch in admin.exchange and the authentication works, but there is no 'recipient found' (Error: MigrationRecipientNotFoundException).

How can I migrate to existing domain user? Or do we first need to pull the email into outlook and then somehow merge them?

Thanks,

Andy

Exchange | Exchange Server | Other
Exchange | Exchange Server | Other
A robust email, calendaring, and collaboration platform developed by Microsoft, designed for enterprise-level communication and data management.Miscellaneous topics that do not fit into specific categories.
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.
Windows for business | Windows Server | Devices and deployment | Set up, install, or upgrade

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  1. Yuki Sun-MSFT 41,451 Reputation points Moderator
    2023-01-31T02:29:59.1433333+00:00

    Hi @riverrunsthroughit,

    In order to migrate IMAP mailboxes to Microsoft 365 or Office 365, normally we can refer to the document below:
    Migrate other types of IMAP mailboxes to Microsoft 365 or Office 365

    Would you go through it and see if the steps have been followed properly?

    Besides, for the error you encountered, it's suggested to double check that the value in the EmailAddress column of the CSV file is correctly entered. It should be one of the proxy addresses on the cloud mailbox that you are trying to migrate the data to. See Troubleshooting issues with IMAP mailbox migration.

    By the way, from the description, do you only need to migrate this specific mailbox? If yes, it might be simpler to migrate the emails via PST files. You can add the IMAP mailbox to Outlook, export mails of the past month to a PST file, then you would be able to import the PST file to ******@domain.com via either OWA or Outlook desktop. For more about exporting and importing PST files in Outlook, hopefully you can find the articles below helpful:

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