https://issues.apache.org/SpamAssassin/show_bug.cgi?id=4900

--- Comment #14 from John Hardin <[email protected]> 2010-04-15 20:54:11 EDT 
---
(In reply to comment #13)
> As to John's addition in comment 10:
> > This could also be reasonable shortcut fodder. If the fixed score has
> > been set to (for example) -500, it's unlikely any combination of spam
> > rules will push it back above zero.
> 
> No dice.  Here's what that does:
> 
>  1      -235.000
>  2      -102.500
>  3      -58.333
>  4      -36.250
>  5      -23.000
>  6      -14.167
>  7      -7.857
>  8      -3.125
>  9      0.556
>  10     3.500
>  11     5.909

That isn't shortcutting (bypassing scan) when the AWL average is very
negative/positive, which is what I was suggesting.

Shortcutting on AWL totscore is admittedly a more intrusive change than simply
tweaking the numbers the AWL data gets set to, but shortcutting would indeed
make it a permanent white/blacklist, not just a "white/blacklist for the next
month or so".

It would also break GTUBE, because a large negative AWL score that shortcut
scanning would bypass the GTUBE rule, unless we provide something like a tflag
for "this rule can't be bypassed by AWL shortcut" and apply it to GTUBE.

It would also break the "averager" part of AWL, absent such a tflag, but use of
that flag reduces the permanence of the white/blacklisting.

GTUBE also should not count towards AWL score or you'd risk blacklisting
someone who sends a GTUBE...

Yep, rather intrusive.

> How about we set the AWL totscore to -100 and the count to 10 rather
> than 1?
> 
>  1      -35.000
>  2      -29.091
>  3      -24.167
>  ...
>  6      -13.333
>  9      -6.111
>  12     -0.952
>  13     0.455
>  14     1.739
>  15     2.917
>  16     4.000
>  17     5.000
>  18     5.926
> 
> Not enough in my book.

Push the envelope harder. Try setting totscore to -950 (to pass GTUBE) and
count to 500 or 1000.

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