Forum Discussion

MCT

Sep 06, 2020

Solved

Migrate on-premise mailboxes to existant online users

Hello, We have to migrate on-premise Exchange 2010 mailboxes to Exchange Online, but the problem is that the customer already has created cloud users with mailboxes using the free teams explanatory ...

VasilMichev
Sep 06, 2020
You can remove the Exchange license and wait for the mailbox to be deprovisioned. And follow the steps here: https://techcommunity.microsoft.com/t5/exchange-team-blog/permanently-clear-previous-mailbox-info/ba-p/607619

VickVega

Brass Contributor

Sep 07, 2020

cruizmct
You would have to do some matching between on-prem and cloud.
https://support.microsoft.com/en-us/help/2641663/use-smtp-matching-to-match-on-premises-user-accounts-to-office-365