I'm running Exch 2000 SP2. I had a few problems on initial installation, I've fixed most of them & on the whole it's running okay. However I am still getting a few error messages in the event log. According to Technet to solve one of them they recommend reinstalling Exchange. My question is, is it safe to do this or will I lose all my settings of mailboxes, email addresses etc ? Obviously I'd like to be sure before running it.