We have an Exchange server for our company email; and just this week we've been having problems with the store.exe process running at 100% cpu utilization. It's been a very stable system for many years, but it just started up this week and I'm at a loss for what could be causing the problem. While the store is running at 100%, employees are unable to access email through Outlook or OWA. Every now and then a few messages might sneak through, but they are usually delayed between 15 minutes and 2 hours.
I could use some assistance trouble-shooting the problem.