I have an iMac running Mac OS X 10.5.8 and the RDP Connection Client 2.0.1.

http://salle.dyndns.org/misc/rdp%5Fproblem1.png

When I try to connect to a Windows 2003 Server on the same network I get a dialog saying "Remote Desktop Connection cannot verify the identity of the computer that you want to connect to".

Picture: salle.dyndns.org/misc/rdp_problem2.png

And when I press the Connect-button in the previous dialog I get the same message in another dialog:

Picture: salle.dyndns.org/misc/rdp_problem3.png

I can connect to the Win2k3 server from a Vista machine, and it used to work from the Mac as well. I stopped working from the Mac after I did some configuration on the win2k3 server, removed and added the the connection in the Terminal Services Configuration:

Picture: salle.dyndns.org/misc/rdp_problem4.png

What do I need to do to be able to connect from the Mac again?

(I have not enough reputation to post multiple links or images)