My exchange server stopped receiving message at 12 noon PST yesterday. There are no log messages in the event viewer and I discovered that the logging option on the SMTP virtual server was not checked. What could have caused this? And should I check the logging option on the SMTP virtual server for future problem determination? Sincerely, Tom Hollembaek Artesient <http://www.artesient.com/> (626) 294-2034