Earlier today ordb.org announced that it is discontinuing the Open Relay Database. The maintainers have moved on noting that blocking open relays just isn’t what it used to be. For No-IP Anti-spam Policies, this was a default list for the Aggressive, Strong, and Moderate presets. It has been removed from these as well as domains that had it as a customized selection. We are sorry to see ORDB go, but we look forward to what new enterprises their loosed time shall beget.
“…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…”
This may be true but open relays are still a threat.