Hello,
I'm trying to give a group Send As permissions over another distribution group but I'm running in to some issues. I'm running a DirSynced, non hybrid, Office 365 mail environment. I've got a distribution group in the Exchange Online environment, customer.service@domain.com. I want to give another group of users Send As rights but I don't want to have to update the permissions all the time so I'd like to give those permissions to a group, then add users to the group to get the permissions.
I've tried giving those permissions to an MSOL Security Group, a Distribution Group, and a Mail Enabled Security Group. None of these appear to result in their members getting Send As permissions to customer.server@domain.com.
Any assistance would be greatly appreciated.