Peter Bowyer wrote on Fri, 23 Apr 2010 18:23:57 +0100.
> Discarding the countless man-years of effort already expended on this
> topic would seem to be foolish. See Dynastop, Spamhaus PBL, and many
> other projects. They've taken the time to get it right and think of
> all the instances that your simplistic pattern matching falls over on.
My simplistic pattern matching has improved tremendously in the last few
hours. It works for our Exim server.