We have a Exchange Server 2013 CU3 and are trying to make a connection from the internet. The netowork seems to be NATing the packets correctly for the Exchange server but when we try to telnet in to the public IP for the server, it says waits a
while and says "connection to host lost" No banner. No other useful info. I am trying to determine if the smtp taffic is getting to the server and the server is just discarding it or if the packets are lost in the network path.
Is there a log that shows all smpt connections to the server? I did protocol logging on the default recieve connector and there doesn't seem to be anything for the attempts. Does anyone have some advice. I am out of ideas. Thank you
in advance.
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