On Sat, 14 Jul 2007, Dave Koontz wrote:

> Most likely, Johnny Spammer monitoring this list will just add a
> FAKE header to take advantage of such a rule.


You would only check it in the header that your MTA added.

--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
jhardin@impsec.org FALaholic #11174 pgpk -a jhardin@impsec.org
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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Where We Want You To Go Today 07/05/07: Microsoft patents in-OS
adware architecture incorporating spyware, profiling, competitor
suppression and delivery confirmation (U.S. Patent #20070157227)
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