https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6155

--- Comment #137 from Mark Martinec <[email protected]> 2009-10-27 14:18:14 
UTC ---
> > it looks like there might be a bit of a problem there -- definitely some
> > rules that are in immutable sections, like the above, have been allowed
> > to be mutable in ranges.data....
> 
> just wondering, Mark, did you do this deliberately?  or is it just a bug
> in the tool that it's ignoring the non-mutable flag for those rules for
> some reason?

Sort-of deliberately. Initially I followed the idea in wiki RescoreMassCheck
section 4.2: 'comment out all "score" lines except for rules that you think
the scores are accurate like carefully-vetted net rules, or 0.001 informational
rules' which made perfect sense to me, so I did it for 50_scores.cf, except
for a couple of rather obvious rules like _WHITELIST and similar, and the ones
clearly indicated as 'indicators' only in the surrounding comments, or set to
0.001. Later I nailed a couple more. I followed a principle: when in doubt,
leave it floating, it can be fixed later if necessary. It gives some insight
into what GA 'thinks' about certain rules.

I think at least for some rules GA makes perfect sense, like RDNS_NONE
and RDNS_DYNAMIC. For some of them the GA result is close to the manually
assigned score, or may indicate a need for reconsidering the assigned score.
But I agree that more may need re-fixing.

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