On Aug 25, 11:58am, Alan DeKok wrote:
} Subject: Re: [Asrg] MXs Used As Authentication - Why RMX?
}
} It's been suggested that outgoing SMTP servers should be in an
} entirely different address range than incoming servers, and that those
} outgoing servers shouldn't accept ANY traffic other than what they
} originate. No SMTP, no ICMP, nothing at all.
Servers configured that way may find that they are not able to send
mail to aol.com addresses. AOL now periodically tests IPs from which it
recieves inbound mail to determine whether they are open relays. My
experience has been that if those IPs simply refuse inbound SMTP, they
get put on AOL's blacklist; to pass AOL's open relay test, the server
must both accept an SMTP connection, and then refuse to transmit.
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