My exchange 2007 server's store.exe is utilizing 90%-95% of CPU all the time. And the IS scheduled maintenence is at 11PM-1AM everyday. The only change that I made today was to increase the size of the message receive/send to 15MB.
My setup is: one Exchange 2007; CAS and Hub, one exchange 2007; mailbox and hub
can you guys help why this is happening?