SpamAssassin, out of the box, was not very effective. However,
there were several web sites that had some additional rules that seem to work better.
a) The 'measles' rule set provided by one site looks for
'l33t' and other common hacker misspellings in message.
b) Some 'body' checks that look for your usual viagra, etc.,
buzz/key words.
This now appears to be working fairly well.
I tried an experiment with the Bayesian filtering and training.
I fed it the last 6 months of the LPRng mailing list as 'ham'
and the last couple of days of 'spam' as 'spam'. Ummm...
Well, it appears that most of the LPRng postings appear to be 'spam-like'
as the filtering was less effective.
I removed the training and went back to the rule set method.
Sigh.
But now instead of 11000 per day I have only 4 per day to look at.
Or some volunteer(s) to look at.
I am thinking aobut adding some 'obfuscation' to the postings to
remove or modify email addresses in headers/body so that mailing list
monitors do not pick them up. Simple changes such as
[EMAIL PROTECTED] -> user _at_ hostname.place
currently seem to be effective.
Any comments?
Patrick Powell
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