ORDB.org RBL Anti Spam service going offline

by on December 18, 2006 · 7 comments· LAST UPDATED December 19, 2006

in , ,

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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{ 7 comments… read them below or add one }

1 Evelyn Ortiz March 26, 2008 at 12:25 am

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


2 Martin Dostie March 26, 2008 at 11:22 am

how can you determin spam mail serveur and why my serveur has been blocked by relays.ordb.org

can you tel me that ?


3 Adam Carter March 26, 2008 at 3:37 pm

go read this artical from 03-25-2008 for a better idea what happend, and why your server doesn’t work.


4 Adam Carter March 26, 2008 at 3:37 pm
5 it support March 27, 2008 at 11:04 pm

These blacklist serve a purchase but they are so hard to contact or get any customer service from I would not use them


6 Robert Adelman May 5, 2008 at 4:07 am

I personally would not be using the blacklists as they are hardly maintained


7 jonathan July 8, 2013 at 1:31 pm


I think you should refresh that post because
list.dsbl.org is dead too


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