On 01/07/05 05:03 PM, William Stearns sat at the `puter and typed:
> Good evening, Scott,
> 
> On Fri, 7 Jan 2005, Scott Wertz wrote:
> 
> > I think this is an easy question, but I haven't been able to find an
> > answer.  If I'm using spamassassin 3, invoking it via procmail as just
> > 'spamassassin' and testing for the result, and I trust that any message
> > carrying a URL that's listed on surbl.org or spamhaus.org is 100% spam,
> > what file(s) would I edit and how?
> >
> > In other words, I've never seen a false positive on either of those BLs,
> > but I'm seeing spam that meets those tests and is still weighted less
> > than 5.  I want to change that.
> 
>       As Michele correctly pointed out, you're certainly welcome to 
> drive up the scores quite a bit so that emails with an surbl-listed domain 
> are much more likely to cross 5.0.
>       However, even though Jeff Chan will likely shoot me for saying it 
> ;-), surbl's can and occasionally do have false positives.  Let's use 
> Gevalia coffee as an example.  I'll blacklist their domain because they 
> regularly send me UBE.  However, Gevalia has legitimate customers; for 
> those individuals, email from that domain is _not_ UBE, it's solicited 
> mail.  (Just for reference, we removed gevalia.com because there were 
> legitimate uses for it...)
>       I personally have trust in the surbl's, so I have no problem 
> recommending that people increase the score if they want.  Might I humbly 
> recommend increasing the surbl score to something between 2 and 5, so that 
> if surbl screws up for your particular mail flow the other rules have a 
> chance of reining it in?


Excellent suggestion.  Shoulda made it myself in my other posts.  It's
been mentioned a number of times that scoring a test at 100 is almost
always a bad idea.  Boosting the scores to allow them to swing a bigger
bat - although one that can potentially be overridden by very low bayes
scores - is usually ok.

Lou
-- 
Louis LeBlanc          [EMAIL PROTECTED]
Fully Funded Hobbyist, KeySlapper Extrordinaire :)
http://www.keyslapper.org                     ԿԬ

Information Processing:
  What you call data processing when people are so disgusted with
  it they won't let it be discussed in their presence.

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