[Pete McNeil]
Here is a link to the analysis:
http://www2.spamchk.com/public.html
Hope this helps,
_M
This is very useful, and most of what I was looking for, but I'd still
like to see an analysis done with hand-filtered email.
It does appear that "SBL" (which I assume is SpamHaus's SBL) has a very
low false positive rate. However, it also blocked only about 10% of
incoming spam. The XBL caught a lot more, but still less than 65% of the
spam. But this better performance cost nearly 30 false positives (each
of which could lead to a very irate customer for a business or
government organization).
The numbers seem to indicate that IP-based blacklisting is essentially
useless without further content filtering. None even came close to
filtering 75% of spam, and some caused hundreds or thousands of false
positives.
I wonder if the same poor performance will be the output of
domain-name-based reputation systems after MARID's work is widely
deployed.
Do you have a key that explains what each of the test abbreviations are
on this page? Some are obvious, others are not.
Thanks,
Ryan