ORDB.org RBL Anti Spam service going offline

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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🐧 10 comments so far... add one

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10 comments… add one
  • Evelyn Ortiz Mar 26, 2008 @ 0:25

    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

  • Martin Dostie Mar 26, 2008 @ 11:22

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

    can you tel me that ?

  • Adam Carter Mar 26, 2008 @ 15:37

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

  • Adam Carter Mar 26, 2008 @ 15:37
  • it support Mar 27, 2008 @ 23:04

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

    • Cody Dec 10, 2014 @ 14:58

      It isn’t for the mail server admins to care if they are hard to contact. They also aren’t the ones to be blamed. Perhaps those on the list should focus on fixing the reason they are on the lists to begin with. I imagine you don’t maintain any mail servers, never have and most likely never will. I know, I know, life is so unfair that you are bothered by this type of thing. Well guess what. Life is indeed not fair. When you maintain a mail server, you’re more than welcome to run it with your policies. If that includes being an open relay then too bad when you end up on an RBL. Otherwise, if you don’t like using RBLs then don’t use them. But until then, there’s two options:

      – Live with admins that use them.
      – Don’t use email.

      Your choice…

  • Robert Adelman May 5, 2008 @ 4:07

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

    • Cody Dec 10, 2014 @ 14:54

      I’m sure you are in the know… because you have the task to maintain them. In which case you should be working harder. Right ?

      No, what you really mean is you don’t like them for some reason. And while you might not like them I challenge you to maintain huge mail servers (or those seeing lots of traffic) and then telling me the same thing. I run a small mail server and the amount of crap I see is absurd… this is helpful and besides, many more that don’t fail RBL will fail SPF or… they don’t even use the protocol right (let alone having PTR records to match the host they claim to be coming from[1]) and are therefore blocked too. RBLs are important and while some don’t like it maybe they should rather focus on WHY they don’t like them. I suspect in most cases it is because they are ON that list. If that is so and you have a static IP, then maybe you should fix your problem (incidentally, I know for a fact that some RBLs DO take action on wrongly added addresses as well as addresses that had problems and then fixed.. because they have a form for it[2]). If you don’t have a static IP or block, perhaps you should actually pay for it rather than expecting a server to work on a dynamic IP (even if it works – which is possible depending on how your IP is obtained and the defition of dynamic in the particular case – you can’t guarantee that other hosts will like it and indeed many don’t). With the exception of RBLs that are beyond aggressive (which we’re not referring to), I have no sympathy whatsoever for IPs being on them. That’s their problem and their fault (directly or indirectly). Funny thing is, unless you like spam, you probably are helped by RBLs more than you think…

      [1] Much of the time, if they even get to that point, they claim nonsense, random names, even as far as localhost (yes, because any sane host will claim they are localhost when they are routed across the Internet…)
      [2] The actions taken on RBL matches is arbirtrary you know. Similar is SPF: if the checking host doesn’t care to block or if the SPF published record is not a fail, then it is only noted but not denied.

  • jonathan Jul 8, 2013 @ 13:31


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

    • Cody Dec 10, 2014 @ 14:42

      If anything at all he should write a different post because this was about a certain RBL. Besides, maybe he doesn’t use that one. I did but of course I don’t now.

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