>I have a dual gateway servers setup in front of my IMail server.... I have
>just noticed
>that Say a Spammer on the following ip 192.168.0.1 claims his email address
>is [EMAIL PROTECTED] (which lets say is a VALID address), now he sends mail
>and it hits my gateway box and then forwards the mail to my Real Imail
>Server Which Sees the IP as my Gateway not the IP where the Email was Sent
>from, so the mail goes to my users, hence an open relay if he knows one of
>my users Email Address. What Option can I use to stop this from happening.
I'm confused.
There doesn't seem to be any problem with spammers relaying mail through
any of the servers. It sounds like the problem is that a spammer can send
mail to your users. That's exactly how it should work. The gateway should
not block any E-mail addressed to users at your domains, and your primary
mailserver shouldn't block any E-mail addressed to users at your domains
either (unless, of course, you are using anti-spam software/settings). It
doesn't matter what IP address or return address the spammer is using --
the key is "so the mail goes to my users". You would only be an open relay
if the gateway servers (or the primary server, if Internet accessible)
would send mail to *external* domains ("to people who are not my users").
-Scott
---
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IMail. http://www.declude.com
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