I have had some very good success with a rawbody and subject test which
looks for

  4 or more consonants
  followed by 1 or 2 vowels
  followed by 3 or more consonants or digits

This is the match:
/[0-9bcdfghjklmnpqrstvwxz]{4,}[aeiouy]{1,2}[0-9bcdfghjklmnpqrstvwxz]{3,}/i


This catches the junk like:
  Subject: Buy XYZ Now ... d  xdzjibcx qkjk
    or
  h yd ncuzq type="hidden" value="nvjsikqr ">


I have seen some false positives on notices like Travelocity.  They put
stuff like the following into their messages:

<a
href="http://go3.travelocity.com/Click?q=7d-FFqqIDLLMoOV-qPBDM2ScsLABTfX&a=1
">

So if you test with it, you might want to keep the score low depending on
whether you just tag or tag and bag.



Regards,
Larry

Life is not about how fast you run, or how high you climb, but how well you
bounce.



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