ietf-asrg
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[Asrg] Re: Testing that the MX is sensible

2006-02-21 15:21:29
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.)


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