Hello: Have been running SBS2003 for about 4 years. No changes have been made to the system. In the last few months everyone in the company stops receiving mail. To remedy the problem we need to reboot the system. Seems that for some reason (we get no error messages) exchange server simply stops asking the web server for the mail. As soon as we reboot, all is fine. At 1st this was happening every other week, now 3 to 4 times per week. Any help would be great.