| Open Relay Databases used by Subvenion: |
| Name | Suffix | IP or Domain Based | Response Values | Notes |
| SpamCop | bl.spamcop.net | IP | 127.0.0.2 | By far the most effective single Spam filter |
| Spamhaus | sbl-xbl.spamhaus.org | IP | 127.0.0.2-6 | Very effective, seems to catch more European Spam |
| O.R.D.B. | relays.ordb.org | IP | 127.0.0.2 | The granddaddy of ORDBs, incorporated into many other lists, moderatly effective. |
| D.S.B.L. | list.dsbl.org | IP | 127.0.0.2 | Good overall filter |
| Composite Blocking List | cbl.abuseat.org | IP | 127.0.0.2 | Moderatly Effective |
| The South Korean Blocking List | korea.services.net | IP | 127.0.0.2 | Moderatly Effective |
| N.J.A.B.L. | dnsbl.njabl.org | IP | 127.0.0.2, .4 - .9 | Virtually eclipsed by other lists like Spamcop |
| RFC Ignorant | dsn.rfc-ignorant.org | Domain | 127.0.0.2 | Moderatly Effective |
| S.U.R.B.L. | sc.surbl.org | Domain | 127.0.0.2 | Moderatly Effective |
| S.O.R.B.S. | dnsbl.sorbs.net | IP | 127.0.0.2 - .9 | Too slow to be of much use |
china brazil russia.blackholes.us taiwan korea | {country}.blackholes.us | IP | 127.0.0.2 | Effective for filtering out an entire country but most Spam originates in the USA. |