I recently performed some MS updates on my Exchange Server 2007 (Windows Server 2008 Std x64) which caused the server to not boot back up. I uninstalled these updates and after finally renaming the pending.xml file I was able to get the server back up and running.
Since this time the server goes through unexpected reboots throughout the day (every 2-3 hours) and all I can find in the System Even Log is EventId 6008 - unexpected shutdown. This seems to occur only between 9am-5pm and overnight the server runs great with no reboots. I am wondering if there is some kind of load once a number of users log into their emails that causes this or if there could be a corrupt user that once they login this happens. Any ideas or insight would really help as I lose email for about 10min a time 3-4 times daily right now.
If you require additional information please let me know.