>I've received several positive replies to my request, so the work is
>going ahead. It has been suggested that, instead of initializing all the
>counters to zero at the start of each filtering operation, some of them
>(the first 5, say) be left containing the values they were set to by the
>system filter. Then a system filter could do some scoring, and users'
>filters could take decisions based on those scores.
<long hard think>
Yes; that would be good - maybe give the "global" ones a slightly different
access method (name), to make them more readily distinguishable.
This would allow you, for example, to create a fake site email whose sole
purpose in life is to generate a database of message id's/senders, which the
system filter then uses to do some global scoring. Then you give out your
fake address to all the spammers, and your users can try and detect spams
by, effectively saying, "If the system filter says our fake addressed
received this same email, deduct N points where N is a very, very large
number" :-)
Oliver
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