I'm trying to get the net send tool to work on all the domain desktops and I figured out that I need the messenger service running on the machines. I am trying to use group policy to accomplish this. I choose the option to start the service automatically, but it doesn't start after a reboot. I have to go in and still start it up manually. I think I have correctly created and configured the messenger service policy in the domain policy object b/c it changes the service from "disabled" to "automatic", but it doesn't actually start the service.