Re: [Evolution] Spam Filtering

[Rod Butcher <rbutcher hyenainternet com>]

Hans wrote:
> > A hack-ish workaround to train Bayes using Evo is the following: Pick at
> > least 200 non-Junk messages, and keep them in mind. Now mark them as
> > Junk using the Evo UI. Go to your Junk folder, and mark all those
> > non-Junk mail we just abused in a sacrificial manner and correctly mark
> > them as non-Junk. SA will realize it learned these messages previously,
> > and learn them as Ham (non-Junk) only, AFAIK. Now we got the 200 Hams
> > learned. Collecting at least 200 Spams for learning shouldn't be hard I
> > guess. ;-)
> >
> > Note: This really is a *hack* only, and you should not try this unless
> > you feel a little bit adventurous. :)
>
>
> Do I have to mark the mail as Junk first and then un-Junk them - or can
> I just mark them in the Inbox as Not-Junk? In other words, what does the
> initial marking as Junk do?
When you mark an email as Spam, it enables Spamassassin to analyse the 
email's various characteristics and add it to its paramjeters that 
identify spam - the more times you train it with different emails the 
more confident Spamassassin can be in identifying Spam itself - pretty 
much how we learn to decide whether we like or don't like people we 
meet, based on past experience.
When you mark an email as not spam, when Spamassassin has decided it is 
spam, you are forcing it to rethink some rules where it had perhaps 
guessed wrong. For instance, somebody sends you a learned treatise on 
the medical effects of Viagra, Spamassassin may werll treat it as spam, 
but if you tell it its's not spam, it will go away and think "not all 
references to Viagra mean spam, let's think more deeply about this, 
maybe I need to modify my rules".
Rod
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