I am running Exchange 2000 and yesterday the inetinfo.exe started utilizing 100% of the processor. I tried rebooting the box, restarting IIS, removed Spam Filter. All of these have not had a positive effect on the issue. If I stop the SMTP service, the processor goes back to normal; however as soon as I start the service back up it jumps throught the roof. ANY assistance would be much appreciated! I looked at similar issues that were posted and it seemed that 3rd party filter software ended up causing the issue; nevertheless I have removed my 3rd party filter and continue to have problem.