Forum Discussion
Migrating from Google Workspace with Multiple Domains
Hi hewoods23,
If I got correctly your doubts, what you're trying to do is quite easy.
On one hand we have the domains and on the other hand the migration.
You can verify as many domains in O365 as you own, and set the default one that you prefer. In fact, you could verify your domains in O365 before the migration if you want and create your users with the desired one. For domain verification in O365 you only need to add a TXT record to your DNS. ( After that of course you'll need to perform further configurations for mail routing etc... But this steps are not necessary for domain verification and user creation ).
- Add domains to your tenant: https://learn.microsoft.com/en-us/microsoft-365/admin/setup/add-domain?view=o365-worldwide
- Google Workspace migration prerequisites in Exchange Online: https://learn.microsoft.com/en-us/exchange/mailbox-migration/googleworkspace-migration-prerequisites?source=recommendations
- Automated Google Workspace migration: https://learn.microsoft.com/en-us/exchange/mailbox-migration/automated-migration-neweac?source=recommendations
FcoManigrasso Thanks! Just for clarification, when migrating emails over, it is possible to migrate from domain1.com (on GW) to domain2.com (on 365)?
Hi hewoods23,
Absolutely yes. You'll use a target delivery domain for the mail users for the migration task, ( usually a subdomain of your primary domain ), as described here: https://learn.microsoft.com/en-us/exchange/mailbox-migration/googleworkspace-migration-prerequisites#google-workspace-migration-prerequisites-in-exchange-online
It doesn't matter if you then, ( or before ), use domain1, 2 or 3 as the main one.
Mailboxes migration, O365 domains and EXO Primary SMTP are different things, ( related but not the same ). In fact, for the migration task, you could also migrate to the onmicrosoft.com mail users. ( I'm not saying you should do that, it's only an example to understand that you can migrate from domain1 to domain2 without issues ).
Hope this helps and wish you a good day... And good luck with your next migration 🙂
