Dec 22 2019
One of my office365 user is trying to create an email group in Outlook. He receive an error saying I must contact the administrator before he can add internal and external email addresses. How level of access do i need to give the user.
Dec 24 2019
Is he creating a office group, or a distribution group?
In the office group, he can only invite members of the tenant and Azure AD guest users. Check the "External collaboration settings" in Azure AD.