Can you be more detailed. I looked there first. I see no client server entries in the event logs. There may be a way to crank up the logging, but it is very complex what you can do there and be default most loging is turn off.
We block all NDRs at the gateway inbound from an offsite mail server. If one of your internal users send to a non existing recipient, Exchange will generate a NDR and drop it in the users inbox without going through your SMTP gateway. This NDR is entirely different from ones generated by offsite...
I have a bot on an internal pc that kicks off a few outbound SPAM messages per day. I want to track it down to it's netbios name or IP address for remediation purposes. I currently see no way to accomplish this. I have tried EXMON.EXE but it does not gather anything helpful. I can see the NDRs...
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