Hi All, Has anyone scripted a solution to perform a synthetic RDP login?

That would be awesome! I was hoping to find something, preferably in Java so it might be able to work via Groovy, but have not succeeded so far.  I did find a commercial tool (https://www.rdpsoft.com/products/remote-desktop-canary/). If that would work, you could tied it into LM via the SQL results database they mention (perhaps other options). 

I am still looking around to see if something more affordable (preferably free) exists. 

With Nagios, we used check_x224 to verify the RDP server was providing correct protocol responses, not just listening on port 3389.  Something like that might be at least a step toward what you are trying to accomplish.