Hi guys, so starting yesterday morning our mail server was maxing out the cpu with the EdgeTransport.exe service. Memory was also being maxed out (16GB). I'm pretty sure this is a backpressure issue so I've disabled the Exchange monitoring for now and restarted the edgetransport service. However I know this is only a temporary meausre as I see the CPU is back up along with the memory. Why is there so much "pressure" on my mail server? Normally its just idling along. We're only maybe 200 mailboxes. Any ideas?
I should note that all drives on the server have LOTS of drive space - 50% used at the moment
We also have a Barracuda that filters and queues the mail as it starts to get backed up so I don't think spam is the issue. Queue viewer in exchange only shows a handful of messages
Update: Mail.que file has gone from 4GB this morning (9am) to 10.5GB now (11:30am)
There's no mail in the queues (well maybe 4 or 5 messages) - outbound mail is queuing up on the Cuda.