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30-Day Spam Statistics

Spam Rate 73.50%
Total emails filtered by ORF 407,608,694

Top 10 DNS Blacklists

Top 5 SURBLs

Rated best by our technical support. Excellent performance, very low false positive rate.
Still one of the bests. Give it a try if you need to increase spam filtering performance.
Either the risks are higher than usual or this blacklist is contained by another, higher rated blacklist.
Do not use this blacklist. Either it is no longer operational or it has been superseeded by another blacklist.

News

  • September 14, 2015: All surbl.org subzones have been shut down and only the SURBL: Combined SURBL list may be used. Disable all other surbl.org blacklists or update your definitions.
  • September 7, 2015: ORF DNSBL definitions and recommendations received a major update. Update your definitions to make sure you are working with the latest version.
  • March 31, 2014: The Abusive Host Blocking List (AHBL) DNS Blacklist is shutting down. Remove this DNSBL from your configuration as soon as possible. Visit our Knowledge Base article to learn more.
  • March 1, 2013: The Not Just Another Bogus List (NJABL Combined List) DNS Blacklist is shutting down. Remove this DNSBL from your configuration as soon as possible. Visit our Knowledge Base article to learn more.

Notes

Not finding a popular blacklist in your ORF? Your blacklist definitions might be outdated. Read this KB article on updating them. Check out our Best Practices Guide for the list of currently recommended blacklists.

The above statistics are calculated from anonymous statistics reports sent by ORF clients. Only reports by ORF version 4.3 and newer are used to generate the statistics. Reporting is voluntary and are turned off in a considerable number of installations.

The Spam Rate figure ignores the whitelisted email traffic. This is because outbound emails and internal emails are often included in the whitelisted email figures.