Hello,
I have been working on this for some time now. I opened up a ticket with Microsoft to help us setup or DA Server, and they were able to get it setup. However, SCCM server tools (Remote Control) would not to the Client. We found a few articles stating that this was a firewall issue on the clients and we needed to open a few ports with Edge Transversal. We did so. I am able to RDP in to clients, but only from DA server. My SCCM server still cannot connect.
I think the overall issue is not Firewall related, however. I think it has to do with ipv6. DA uses IPv6 for clients. My internal network is ipv4. Do I have to erect a IPv6 DHCP scope in my environment for my internal SCCM Server to see the DA Clients?