RequireSenderAuthenticationEnabled can’t be performed on the object

6 Oct

A local AD distribution group that is synchronized to Office365 needed to be able to accept emails from external senders.

For Office365 only groups this can easily be changed via the GUI but as with all items synchronized from on-premise these settings need to be edited via your local AD.

This can be performed either by using the Attribute Editor in AD or via PowerShell.

AD:

PowerShell:

Result: