[TriLUG] Training Spamassassin

[Rick DeNatale]

I only train SA with either:

  1) Spam which got through (false negatives).
  2) Ham which triggered a false positive and was mistakenly marked as spam.

As I understand it SA automatically trains itself on spam which it
traps to tune on what spam techniques are au courant.

I haven't seen too much in the way of false positives out of SA in
quite a while.  The gmail spam filter on the other hand seems to get a
few false positives every week.


On Mon, 24 Jan 2005 08:46:17 -0500, Brian Henning
<brian at strutmasters.com> wrote:
> Hi Guys,
>    As I'm sure the postmasters among us are well-aware, in order to keep
> my Bayesian filter working efficiently, it's occasionally necessary to
> retrain it for new tacks the spammers have invented.   My question is
> thus: Is it "safe" and/or wise to train with only -spam input?  Our
> non-spam profile hasn't changed much, so the previous -ham training
> ought to still be valid...right?  Or do I need to somehow balance the
> training "sessions" with equal parts -spam and -ham even though the -ham
> still looks about the same?
> 
> Thanks as always,
> ~Brian
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