Forum Discussion
Adding user to MS Teams breaks email - Exchange 16 On Premises
Hi there, we're just starting out using a pretty standard Teams setup with a small number of users. We use Office 2016 and Exchange 2016. Our primary email accounts are flast@domain.com and we have first.last@domain.com as secondary. It seems that when we add them to teams as flast, they no longer can send or receive emails from that address; using first.last does seem to work. We then delete them from Teams, re-add them and the problem seems to go away. Has anyone else seen anything like this? Any ideas? Thanks for the help.
I'd second the above, there is no direct connection between adding a user to a given team (or teams) and the ability to send or receive messages. Especially in on-premises environment.
Now, as part of the whole "team enablement" flow, you might be doing things like assigning a license to the users, and depending on your configuration this might result in a cloud mailbox created for them, effectively resulting in having mailboxes both on-premises and in the cloud, which can cause mail flow issues. But in any case, if you can reliably reproduce the issue, open a support case to have it properly investigated.
VasilMichevI think you're on the right track. Everything is on premises (AD, Exchange, Office) with the exception of Exchange Online Protection (EOP) which is our email filtering service. All email flows through that service before hitting our servers. Potentially there is some issue with the default onmicrosoft.com email account that is created with new users on the site that is causing confusion. I deleted those accounts when creating new users but possibly there is more to it.
Well, that's why we have support for, if nothing else they should be aware of any "known issues" around such configuration.
It's difficult to answer this without additional information. Sending and receiving email should not be affected. Do messages bounce? Or is that Outlook just isn't updating and outbound messages are stuck in the outbox?
Can you walk me through your configuration? Are you using aadconnect, does the problem happen when you assign a license?
