I've configured my ASG120
as a SMTP Relay and some of my users uses a pop3 to receive them Email and i setup a DNAT for a pop3 , smtp and OWA.
the problem is any one "from outside SPAMMER" can relay messages and the Exchange server.
I want only the exchange server can relay.
because of that the number of messages has reached 25,000 per day so far.
i want to make a rule for SPAM messages i.e "Domain name, IP and contents".
now i cant send any Email to Hotmail my IP address listed as SPAM source who can i fix this
also the ASG CPU has reached 99% why has reached.
Regards
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