Return
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Title
Error 0xe910003f. IntraMail Switch, Exchange server network address not found, may be insufficient rights, mailbox store: "" -
Description
When performing an intra-forest migration the following error is displayed when viewing the log for failed objects when trying to reattach the mailbox to the target account.
"Error 0xe910003f. IntraMail Switch, Exchange server network address not found, may be insufficient rights, mailbox store: "
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Cause
In this scenario the mailbox resides within Office 365 so there is no on-prem Exchange Server. -
Resolution
Currently this operation is not supported by the DSA which handles the migration task.
Before migrating mailboxes to the cloud you must first migrate the AD objects to the target domain and then migrate the mailboxes to Office 365.