Email filtering is an essential task. There are many methods like:
=> Bayesian spam filtering
=> SpamAssassin/DSPAM programs
=> Check open relay using RBL etc
Now ORDB.org is shutting down its operation. ORDB is quite effective and I use this list against all of email servers. Spammers still use 3rd party servers and desktop computers so that they could minimize or avoid detection by re-routing their e-mail through these third party e-mail servers.
According to their home page:
We encourage system owners to remove ORDB checks from their mailers immediately and start investigating alternative methods of spam filtering. We recommend a combination involving greylisting and content-based analysis (such as the dspam project, bmf or Spam Assassin). DNS and the mailing lists will vanish today, December 18, 2006.
Generally, I use following sequence while configuring anti-spam
reject_rbl_client relays.ordb.org,
reject_rbl_client list.dsbl.org,
reject_rbl_client sbl.spamhaus.org,
reject_rbl_client cbl.abuseat.org,
reject_rbl_client dul.dnsbl.sorbs.net
These services blocks thousands of spam everyday before hitting email server and Spam Assassin. Indeed a bad news for mail server admins!
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- Last Updated: Dec/19/2006
{ 6 comments… read them below or add one }
Dear Sir, I wish to inform you that your database ordb.org this causing problems for our enterprise users ISP Telconet – Ecuardor. Please, do you tell me if your server is a filter and how we could withdraw our domains blacklisting of your database
how can you determin spam mail serveur and why my serveur has been blocked by relays.ordb.org
can you tel me that ?
go read this artical from 03-25-2008 for a better idea what happend, and why your server doesn’t work.
http://it.slashdot.org/article.pl?sid=08/03/25/2124224
These blacklist serve a purchase but they are so hard to contact or get any customer service from I would not use them
I personally would not be using the blacklists as they are hardly maintained