On Fri, 29 Oct 2004, David Hiebert wrote:
> My second question/problem is the 3 commented out lines. The man page for
> mimedefang-filter indicates that if an IP has no reverse dns, then
> $hostname is a duplicate of $hostip. This then should make a real quick
> and easy check for no reverse, however the if statement (when not
> commented) never seems to be true.
My mistake, the man page is wrong. If $hostip is 1.2.3.4 and has no
reverse DNS lookup, then $hostname is [1.2.3.4]. That is:
if ($hostname eq "[$hostip]") {
# You have no reverse DNS!!!!
}
However, I question the wisdom of rejecting mail from machines with no
reverse DNS. I'm not convinced it will block bad mail more often than
good.
--
David.
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