We have Exchange 5.5, sp4
A month ago we fixed our server to stop relaying spam.
We have an internal email app that sends administrative
alerts which has begun failing with a Max Connections
Reached message because of all the spammers that are
connecting to our server to attempt to relay and are being
We had Max Incomming Connections set to 30, and set it to
100. This allowed our internal app go get a connection
and function properly, however we are getting hammered by
these attempts to relay (approx 72,000 per hour)!
Watching the connections using perfmon this evening we see
that the inbound connections increase to over 80, and we
do not know how high it will go yet on a heavy day. SO:
What to use for Max Inbound Connections?
Is there a way to stop these "people" from connecting to
us? It's got to be killing our server's performance.