OK, I have finished our selective spam filtering system. It uses a mysql
database to store the userids of anyone who for whatever reason wants to
receive all their spam. If you are not in the database then anything
with a spamassassin score over 7 is rejected. It is more selective than
just using whitelist_to in spamassassin as it will only deliver to the
recipients who are in the database. It also will deliver to students as
we do not spam filter for them. Even if there are mixed staff and
student addresses in the envelope header.
So if any of you are interested I documented how I did it at
http://www.sprocket.lboro.ac.uk/~ron/email/SPAM_filtering_system.htm
If anybody can see any gotchas I would appreciate you letting me know.
Otherwise for those of you who said you were interested in doing
something similar I hope you find it useful.
Ron
--
Ron McKeating
Senior IT Services Specialist
Internet Services and Software Solutions
Loughborough University
01509 222329