I have been following the threads on "host unknown to system" topic because just this morning, my messenger system decided to start acting up and knock out users.

Question: the documentation leads me to believe I am able to create a nmmHost object that matches my domain - however, I am not able to create an object with a period in it. The screeen shot in the documentation does show this (figure 1.11) with the example of corporate.com.

I was only able to create arvig, not arvig.com. So after creating that, I went in to properties of my new object and defined arvig.com at the hostname section and then gave it my scope profile location. Am I good to go?