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Posted to dev@spamassassin.apache.org by bu...@bugzilla.spamassassin.org on 2017/02/04 15:35:42 UTC

[Bug 7390] New: razor2 rule scores

https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7390

            Bug ID: 7390
           Summary: razor2 rule scores
           Product: Spamassassin
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Rules
          Assignee: dev@spamassassin.apache.org
          Reporter: jquinn+SAbug@pccc.com
  Target Milestone: Undefined

From RW on https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7351:
I think there is a problem here. For a while this month the razor score was
above 4.5 points, and at that level a razor FP combines with BAYES_50 to
produce a misclassification at the default threshold.  The current rules are
over-complicated and make it hard to put a sensible limit on the score.

Engine 4 fell-off a long time ago leaving only engine 8.
RAZOR2_CF_RANGE_E8_51_100 and RAZOR2_CF_RANGE_51_100 are now duplicates, so
RAZOR2_CF_RANGE_E4_51_100 and RAZOR2_CF_RANGE_E8_51_100 are now both
superfluous.

Engine 8 produces mostly high confidence results, in the mass checks
RAZOR2_CHECK only hits 0.3% more spam (for 44% more ham).  Its precise score
wont be all that important - provided it's low. 

What I would suggest is something like:

- Remove RAZOR2_CF_RANGE_E8_51_100 and RAZOR2_CF_RANGE_E4_51_100

- Fix the score for  RAZOR2_CHECK at  0 1.7 0 0.8

- Limit the score for RAZOR2_CF_RANGE_51_100 to 2.7

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[Bug 7390] razor2 rule scores

Posted by bu...@bugzilla.spamassassin.org.
https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7390

--- Comment #2 from Dave Jones <da...@apache.org> ---
Created attachment 5447
  --> https://bz.apache.org/SpamAssassin/attachment.cgi?id=5447&action=edit
Patch against 3.4.1 to remove Razor2 engine 4 and consolidate engine 8 rule.

Patch created following the recommendations:
Removed the E4 and E8 rules and scores.  Moved the E8 scores to
RAZOR2_CF_RANGE_51_100 in 50_scores.cf.  This should keep the max total RAZOR2
score a point or two lower than before.

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[Bug 7390] razor2 rule scores

Posted by bu...@bugzilla.spamassassin.org.
https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7390

Dave Jones <da...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|dev@spamassassin.apache.org |davej@apache.org

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[Bug 7390] razor2 rule scores

Posted by bu...@bugzilla.spamassassin.org.
https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7390

Kevin A. McGrail <km...@pccc.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kmcgrail@pccc.com

--- Comment #1 from Kevin A. McGrail <km...@pccc.com> ---
+1 to limit Razor2 rule upper end of scoring and to also comment out the
engine4 rules

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[Bug 7390] razor2 rule scores

Posted by bu...@bugzilla.spamassassin.org.
https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7390

Giovanni <gi...@paclan.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |giovanni@paclan.it

--- Comment #3 from Giovanni <gi...@paclan.it> ---
+1 to commit davej@ patch to limit Razor2 score.

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[Bug 7390] razor2 rule scores

Posted by bu...@bugzilla.spamassassin.org.
https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7390

--- Comment #4 from Dave Jones <da...@apache.org> ---
Committed in rev 1814242.

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[Bug 7390] razor2 rule scores

Posted by bu...@bugzilla.spamassassin.org.
https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7390

Dave Jones <da...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |davej@apache.org

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