On Feb 21, 2006, at 1:56 PM, Stephane Bortzmeyer wrote:
On Tue, Feb 21, 2006 at 04:50:09PM -0500,
Richard Rognlie <rrognlie(_at_)gamerz(_dot_)net> wrote
a message of 34 lines which said:
Some people intentionally put RFC1918-ish A records in with their
high MX records. Figuring that a spammer, who intentionally targets
high MX records, will hit themselves.
Does it really work? It seems very simple for a spamware to test if
the address is not RFC 1918. (A public address, but not allocated by
IANA, or black-holed, would be more sensible.)
Yes, it really works.
Not to a degree that it's actually terribly useful, but don't
overestimate
how much your typical spamware author knows or cares about such
details.
Cheers,
Steve
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