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Hybrid migration from Exsisting O365/Exchange hybrid setup to new O365 tenant
Hi we have a customer with about 130 mailboxes onpremise, in a hybrid Exchange 2013/O365 setup. Update with final solution: As there where a lot of unknows in this 2 step migration, we ended up ...
This is possible however its kind of the wrong way round, remember the users and identities are syncronised from on-prem, removing the hybrid and AADC from the old domain and converting the users to "cloud" users would mean that there would be no users in your new on-prem domain.
Usually you would migrate to newdomain on premises first and then populate the new tenant from the new domain.
pretty old thread, but you can use this for mail migration:
https://cloudiway.com/mailbox-migration-tool/
https://cloudiway.com/mailbox-migration-tool/