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Cross Tenant Mailbox Migration: Step by Step Guide
This post will describe step by step cross tenant mailbox migration in an easy way. Please follow each point in order to avoid any issue. Check common errors and fixes in the following link: Cross-te...
In that case, you should be able to go ahead with a new mailuser, set it accordingly, migrate the mailbox and, after that, match the new mailbox with the correct user due the ImmutableId.
So i must :
Create a mail user as a cloud object in the target tenant.
Migrate the mail box from source to target.
Match the synced account with the mail user in the target tenant using the Soft or hard matching method
Create a mail user as a cloud object in the target tenant.
Migrate the mail box from source to target.
Match the synced account with the mail user in the target tenant using the Soft or hard matching method