Forum Discussion
Office 365 group to receive external email
Hello all, Lately I have been running into an issue with trying to email to an Office 365 group with an external email address. Even with the group having external email enabled, none of the emai...
Tim Ihrig, please make sure, your Domain DNS settings are set up correctly, especially the MX-Record.
Go to: https://admin.microsoft.com/AdminPortal/Home#/Domainsand check, if everything shows up ok.
One common problem in your case is caused, when a migration from Exchange on premises is not yet completed to Exchange Online and the DNS-MX record is still targeting the on premises Exchange, which does not know the MS 365 groups.
In that case, the sender might e.g. receive an e-mail error message containing:
autodiscover.[your e-mail domain] Mail delivery failed : returning message to sender
Kind Regards,
Achim