We recently had an incident where a use deleted gigs of email and would up with a corrupt mail box. This it appears was the root cause of large mail queue build-ups to the mailbox server. Once we took this user offline the spiking stopped. So we're fairly convinced this was the root cause. The problem: It took some hunches to figure this out. Is there any logging or diagnostic tool in Exchange to see who exactly is pounding the server and causing a denial of service in terms of ability to deliver email to the mailbox server? It is my understanding that RPC requests within a single (or a few) TCP connections are a limited resource on the Exchahge MB server. Would there be any means of seeing that say 90% of all the RPC requests are related to one particular user? MS support so far has not offered any insight regarding being able to more quickly trouble-shoot this kind of issue in the future. Screencap-953-Oct.-18-21.30.jpg
Most monitoring tools can detect a heavy user responsible for the bulk of the RPC traffic.
The Exchange Troubleshooting Tool can also flag a single user as well, although that needs to run in real time,
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This tutorial will show how to configure a single USB drive with a separate folder for each day of the week. This will allow each of the backups to be kept separate preventing the previous day’s backup from being overwritten.
The USB drive must be s…