Scott, I specifically specified 3 characters not 4 to allow for the 2
character TLDs.

I would be very interested to see the results based on 3 characters, not 4.

Ratio of 1 to 13 is not bad if we are talking about a resulting penalty of
20-25% of hold weight.

Also, if the test could be configured to not only allow for specified tests
failed end but also other parameters say HELO contains
problematicdomaincausingtoomanyfalsepositives would that help?

John T
eServices For You

"Seek, and ye shall find!"

> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Scott
Fisher
> Sent: Monday, September 04, 2006 8:15 AM
> To: [email protected]
> Subject: Re: [Declude.JunkMail] Test idea
> 
> I ran a query on this looking at my August email results (228889 emails):
> 
> Excluding HELOBOGUS
> Excluding (timeout) and [No Reverse DNS] and (Private IP)
> Looking at last 4 chars of helo <> last 4 chars of revdns
> 
> 1487 ham:
> including gov / us mismatches
> a fair amount of .com / .org with DSL / CABLE static revdns
> small amount of valid mismatches shaw.ca / shawcable.net
> mindspring.com/earthlink.net. I've definitely seen this from some non US
> mailservers where a country code is in one and .net is in another.
> 
> 19668 spam
> lots of zommbies,especially non-US
> Fair amount of static spammers .net / .info mismatches for example
> 
> ----- Original Message -----
> From: "John T (Lists)" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Monday, September 04, 2006 1:29 AM
> Subject: [Declude.JunkMail] Test idea
> 
> 
> > Idea! (Ouch)
> >
> > If email failed HELOBOGUS or NOREVDNS (or other specified tests) END
> > otherwise compare the last 3 characters of the HELO with the last 3
> > characters of the REVDNS and if not match add say 1/5 or so of HOLD
> > weight.
> >
> > Thoughts, comments, boos, yahs, Go back to sleep (Can I Please?)
> >
> > John T
> > eServices For You
> >
> > "Seek, and ye shall find!"
> >
> >
> >
> >
> > ---
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> >
> >
> 
> 
> 
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