I have built a web and proxy server, configured with an IP range 192.168.x.x (DMZ IP Subnet) that is currently being used as our DMZ environment.
Our normal internal network operates on the 172.x.x.x network.
I can't join the new server to the domain which is configured with a static 192.168.x.x DMZ address and I have manually created a DNS Host Record on the DC which has replicated across all DCs, and rebooted the server twice.
I also can't ping the DCs on the 172.x addresses from the new server on the 192.x address.
Should I now be looking at configuring the firewall to all cross subnet and environment comms?