I've been attempting to finish an RDS farm started by someone else. Seems it works fine within our network. The process I use:
1. open RDP and put in the FQDN companyRDP.company.com
2. Login screen and get onto one of the three session hosts.
When doing the same process from a PPTP VPN FQDN companyRDP.company.com opens the actual RDS Gateway/Connection Broker server, never redirects users to any of the three session hosts. In the RDP window, if i put one of the session host name/ip they will connect to the host but the rdp session is blacked out (Another issue I have been troubleshooting).
I'm at a loss at the moment. Seems like they need to add something in their firewall or DNS. If I ping FQDN companyRDP.company.com from local or over their VPN it does resolve to the same IP, which is the RDS Gateway/Connection broker server.
Any Help out there?