Harold wrote regarding 'Re: [EE] email spamblock router?' on Mon, Jan 16 at 16:21:
> I've added a single line to my sendmail config file that checks the
> blocklists at http://www.spamcop.net . Works well for me!

Any DNS-based blacklist (or any blacklist, for that mater) which you
do not control is a bad idea.  Spamcop specific:
http://jhoward.fastmail.fm/spamcop.html

I'm a strong believer in using a system that learns from *your* spam.
That's the only way you'll get something that works well for *your*
usage pattern.  For example, I block incoming SMTP from Korea and most
of China, but that wouldn't work for other people.  But how many of
the DNS-based blacklist block those IP blocks?  Several.

It's one of those things where you trade some time maintaining your
own system (though DSpam takes almost none of my time now that it's
well trained) for accuracy.  If you don't have time to train /
maintain, and decide to use someone else's free service (or even
for-a-fee service), you're trusting them to classify all of your
email.  I don't have that kind of trust in people I don't know...
Heck, I don't have that kind of trust in most of the people that I
*do* know. :)

--Danny
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