Forum Discussion
Office 365 - Hybrid migration. How to accepted domains ?
Hi PPls.
I have hybrid setup in place and migrated 50% of users to office 365. All looks good. Now i have users from differant accepted domain(primary SMTP address set to differant domain for those users).
Question:
- How will i migrate the accepted domain email address to office 365. I understand the UPN needs to be matched for the migration.
- Will i need to add another UPN for my accepted domain in onprem AD and sync it with Azure AD and also, verify the accepted domain in office 365 domain ? then add the accepted domain in office 365 exchange.
Please clarify what is the right approach. For email flow, no centralized hub configured.
5 Replies
Hi,
You will need to do the following:
- Validate the domain on Office 365
- Add the UPN to onprem
- Add the domain to the Exchange Onprem
- Do a Delta Synchronization on AADConnect
- Run Hybrid Configuration Wizzard to accept new domain
- Verify Connectors
- Create a test user and test mail flow internally
- Change MX record to Office 365
- Test mail flow externally
- Migrate the test user to Office 365
- Create or change the users to the new domain
- Migrate Mailboxes to Office 365
Thanks for the reply.
Accepted domain is already added in on-prem and i have users with that SMTP primary address.
So now, i need to add the domain in azure - > add one more UPN for the domain in on-prem AD -> do a sync -> then add the domain in office 365 ?
is this correct ?
Hi Devaraj,
Validate the domain only on Office 365 you do not need to validate on Azure.
Then add the upn and do a sync.
