AirPort Extreme can't connect to RDP or Exchange
I am in real trouble here. Using my Airport extreme with both firmware 7.6.1 and 7.6.3 I cannot connect to my office's Windows Remote Desktop Server or Microsoft Exchange server. Using Outlook or the Web Interface it just does not connect. I also tries resetting thr router to factory defaults under both 7.6.1 and 7.6.3 with the same result.
When I remove the router and connect directly to the internet, it works fine. The RDP server and email server are the same machine.
MacBook Pro, Mac OS X (10.7.3)