We have our AD synced to Office 365 and I want to control who can send to a particular synced distribution group (usually done through Exchange Admin Centre, Delivery Management) which I believe is done through the AuthOrig
and dlMemSubmitPerms
attributes.
I can add users & groups that are from our AD but I don't know how to add an external email address (added as a contact in Exchange) or an address that is cloud only, if it's possible at all.
If it is, what is the format to use as it doesn't accept email addresses.
Thanks.