I have about three 2008 servers and five 2003 servers. Two of 2003 servers (one is AD) got shut down by themselves last night sometime after about 11:30pm. I didn't notice until this morning. I successfully booted them back without any error or message in the Event Viewer. So I'm still puzzled about the reason of their shutdown. All other servers connecting to the same UPS are just running without interruption.
Can you help figure out?