I am missing something obvious.
We have a Windows server with a static IP hosting our websites.
Remote Desktop using the machine name works as expected
Remote Desktop using the IP address or domain URL fails with an error:
Remote Desktop can’t connect to the remote computer for one of these reasons:
<3> The remote computer is not available on the network

The remote computer is on. The remote computer responds when accessing it by machine-name
The remote computer fails when trying to access by IP or URL
I am guessing DNS ???
I need a pointer on how to solve this problem
Not seeing any error messages.

Thanks

Dave

Have checked DNS and RDS settings
Nothing obvious jumps out