I have two servers on a subnet, one server running Windows 2003 R2 (call it s1) and one running Windows 2008 R2 (call is s2). Both servers are members of the same domain.
I can rdp into S2 but not S1
I can telnet to S1 and S2 on port 3389 (RDP) and I can successfully connect.
I can connect to all OTHER services on S1 BUT not RDP!
I tried using IPs instead of FQDNs but no luck either.
This used to work before I P2V'd my Exchange / Domain controller (client's choice).