We host mail for a subsidiary.
They have a separate domain in the same forest.
Their admins are set as recipient admin via the Exchange recipient admin group.
That was working fine for creating and editing their users via 2013 ECP.
One tried to add a distribution group, but the Organizational unit: "Browse" button was greyed out.
When I select the button, I see all the domains in the forest.
He can not select the button.
His account is in that domain and not in the forest root. (Mine is in the forest root)
The description of the Recipient Management Role, says that they can manage distribution groups.
Am I missing a setting?
Please advise.