> 
> Update of OBFU chr's rule.

I think we can call them Fred's OBFU rules now. You did much more work on
them then I did. Heck, you looked at a bunch of dictionaries. I can't even
spell dictionary! :-)


> 
> rawbody  __FVGT_rb_ATTACHMENT /Content-Disposition: attachment/i
> body  __FVGT_b_OBFU_J  /j(b|c|f|g|w)/i
> body  __FVGT_b_OBFU_OTHER /(vj|vk|xj|xk|yy|zf|zj)/i
> body  __FVGT_b_OBFU_Q0 /(j|k|p|q|t|v|w|z)q/i
> body  __FVGT_b_OBFU_Q1 /q(a|f|h|j|k|m|n|s|y)/i
> body  __FVGT_b_OBFU_V  /(f|g|q|w)v/i
> body  __FVGT_b_OBFU_X  /(c|g|j|k|q|s|v|z)x/i
> body  __FVGT_b_OBFU_Z  /(f|j|k|p|q|x)z/i
> meta  FVGT_m_MULTI_ODD ((__FVGT_b_OBFU_J + __FVGT_b_OBFU_OTHER +
> __FVGT_b_OBFU_Q0 + __FVGT_b_OBFU_Q1 + __FVGT_b_OBFU_V + 
> __FVGT_b_OBFU_X +
> __FVGT_b_OBFU_Z && !__FVGT_rb_ATTACHMENT) > 1)
> describe FVGT_m_MULTI_ODD FVGT - contains multiple odd letter 
> combinations
> score  FVGT_m_MULTI_ODD 1.4
> 
> 

So So So very nice. Have you run this past an email written in MS.Word? I've
seen some FP's on mine. I'm thinking you might need to add one more meta
that checks to make sure it wasn't written in Word. I have a rule I can send
you somewhere. You don't want to check the obvious stuff for word docs, as
spammers can fake that. 

I'll test against this tomorrow and see. 


> This one is less likely to cause false positves when a 
> message contains a
> double-forwarded attachment.
> That's the only issues I've seen here.
> 

Nice thinking!


> Is this rule syntax legal?  I didn't know I could combine an 
> additive rule
> with a ! and have it all work ;)
> 

Define "legal" ;)      Looks OK to me!

--Chirs Santerre
 


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