User:Heb/Sandbox

The Open Relay Database (commonly ORDB or ORDB.org) was a DNS-based Blackhole List, that operated between June 2001 and December 2006.

Termination of service
In a press release in December 2006, the closure of the service was announced, as "the general consensus within the team [behind the service] 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".

https://nowhere.dk/articles/ordb_org_is_dead_and_gone https://nowhere.dk/articles/comon_og_ordb_org

http://it.slashdot.org/story/08/03/25/2124224/long-dead-ordb-begins-returning-false-positives