[pmmail-list] Spam filtering - popfile et al

[Dean Boulding]

I don't know how it does it, but POPFile does an excellent job, on my computers, of 
catching subjects with spaces embedded within words and putting them in my spam folder.

As an aside, I am just about amazed at how well POPFile works:  after a week or two of 
training, it catches over 99% of the spam I get, with very few false positives.  The 
subjects with spaces in, for example, are obvious to a human but not to an algorithm, but 
POPFile picked them up as soon as they started coming in.

Cheers,

Dean


On Mon, 24 Mar 2003 08:35:33 +0000 (GMT), Dave Saville wrote:

>On Sun, 23 Mar 2003 20:02:02 -0500, Andrew Pitonyak wrote:
>
>>in the last two days I received 124 SPAM messages. Four of the messages were not marked 
as SPAM. Of these four, two were very simple and plain. The other two messages had a "s p a 
c e" 
>>after each letter so there were no words against which to filter.
>
>I have thought of a way around that. Because PMMail, unlike PMINews,
>can not ignore RE: (and similar) in a subject line when sorting I run
>a  rexx script on incoming that strips of those from the subject
>line. In passing it could easily add an X-stripped-subject or similar
>that had some processing done on the subject line - Say change all
>special chars to a space and then, as English at least only has "I"
>and  "a" as valid single letter words a bit of intelligent
>compression. The result would be a header line that had recognisable
>words for the later filters to latch onto.
>
>-- 
>Regards
>
>Dave Saville
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