We are using TrendMicro's VirusWall in front of our IMail server. It's SMTP
service appears to gateway a tcp connection between the sending and receiving
mail servers. Therefore, IMail sees incoming connections with the sending server
representing itself with its configured host name but with the IP address of the
gateway. I have configured Declude (1.75) to IPBYPASS that address, but the
SPAMDOMAINS test always fails.
Unfortunately, it seems that VirusWall is broken (not RFC-compliant), and will need to be fixed. Most likely, upgrading it will take care of the problem.
Are my expectations unrealistic considering my environment, or is SPAMDOMAINS not honoring IPBYPASS?
The problem is that VirusWall is "spammer friendly" (it anonymizes the IP address of the sender of the E-mail, so it is impossible to track down the sender, except perhaps by looking at the VirusWall log file).
Since VirusWall doesn't record the IP that connected to it in the headers of the E-mail, it's impossible to know the true source.
-Scott
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