Hi, My windows server is rebooting everyday around 10PM IST. There is much inforamtion on event viewer. Only 2 warnings and 1 infomation for that particular period. Evet IDs: 1015,1003,4097. Thats all information I got. No error nothing. Its an IMAIL server and nothing else is running on it. Could anyone here guide me to trace the real cause. Regards Ciril