Forum Discussion
Adding domain to Office 365 caused outlook to point to office 365 instead of on-premises exchange
Hi, when you added your domain to O365, did you change your MX records or autodiscover records? This would have the effect you are seeing.
What you would need to do to achieve what you are looking for is configure hybrid coexistence between your on premises AD and Azure AD. This will allow you to use your domain both on-premises and in the cloud, but keep the Teams and Exchange services separate.
What you will have to be careful of is duplicate email accounts. You may now find that your users have a mailbox on-premises and also in the cloud. Another complication if this is the case, is that Teams uses the Exchange Online mailbox to store information.
If you have no significant info stored in Teams just yet, then the easiest potential solution to this may be to delete these cloud accounts. If you find you have important business data stored in these cloud accounts, it becomes more difficult, and you will need to go through a process to match the accounts together.
thank you very much. I didn't change the MX records, I just added the TXT record for verification. That's why I'm confused of why outlook switched to the cloud accounts.
thanks
Hmm, that is odd. Autodiscover record definitely not pointing to autodiscover.outlook.com?
What M365 licences have you assigned to the cloud users?
Sorry, you did say that in your original post.
OK, that is baffling if you've only verified ownership of the domain with the TXT record but changed no other DNS settings.
Whenever something like this occurs, it's always inevitably DNS.