Real Time Blacklists
Submitted by Eric Chen
i've been using Real Time Blacklists from spamcop.net on my
personal
e-mail account since october. it caught a lot of spam and had a lot
of false positives. the majority of the false positives came from
lists hosted on yahoogroups.com. i had one personal e-mail that was
blocked from a friend working at a non-profit.
i currently use (as of 4/16/03) RBL on my work e-mail account and have
been satisfied at its ability to block some of the more flagrant
spammers. particularly ones targeting webmaster@upenn.edu.
in summary on my ISC e-mail RBL catches maybe 8/10 spams that i
receive. on my personal e-mail account it blocks pretty much all of
the spam, but has false positives.
the RBL has an interesting effect that consistent spam (i.e. for some
reason i receive party announcements from a club in California) will
periodically be blocked / un-blocked. Not sure why this is (perhaps
IPs change or RBL service unavailable at that time).
-eric
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