ORDB announced that their open relay database running as DNSRBL will be closing down since 1 Jan 2007. This is a sad news and I have been relying on ORDB.org to kick out spam email by relay. One important development as seen from the closing down is that spammers have changed their tactics and open relay RBLs are not the most effective way to counter spam, Here below is the announcement before the closing down of their web site :
"We regret to inform you that ORDB.org, at the ripe age of five and a half, is shutting down. It's been a case of a long goodbye as very little work has gone into maintaining ORDB for a while. Our volunteer staff has been pre-occupied with other aspects of their lives. In addition, the general consensus within the team is that open relay RBLs are no longer the most effective way of preventing spam from entering your network as spammers have changed tactics in recent years, as have the anti-spam community.
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)."
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