Intercept
From Wiki.openrbl.org
Intercept is fully automated using spam-traps to build its database. The traps utilize inactive domains that should not be receiving any email.
Most listings will automatically expire over a short period of time. Listings vary from spammers to virus infected computers.
Intercept does not distinguish or white list any IP Address. Use of Intercept should be planned accordingly by mail administrators.
The Intercept DNS Blacklist (DNSBL) is Free for everyone’s use. To use Intercept query "intercept.datapacket.net".
