----- Original Message ----- 
From: "Kai Schaetzl" <[EMAIL PROTECTED]>

> Anyone knows a workaround for sendmail, so that it knows that any domain
> pointing to 64.94.110.11 isn't valid?

I use Postfix, but if Sendmail support RHSBL lookups, point the zone to ".",
which will process an "A" record query to your own name server for the
e-mail domain, and if it comes back with the VeriScam IP address
(64.94.110.11), then you know it is a bogus e-mail from a fake domain.

HTH,

Bill



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