• Three new SURBL lists available

    June 3, 2004

    Three new SURBL lists are available:,, The first two match advertised sites kindly provided by Outblaze and AbuseButler respectively. multi is a bitmask-combined list of all the other SURBL lists, for use with programs that can decode these back into their constiuent lists, such as SpamAssassin 3's urirhssub. More information on these additional lists can be found in the Lists sections.

SURBL Data Feed Request

SURBL Data Feeds offer higher performance for professional users through faster updates and resulting fresher data. Freshness matters since the threat behavior is often highly dynamic, so Data Feed users can expect higher detection rates and lower false negatives.

The main data set is available in different formats:

Rsync and DNS are typically used for mail filtering and RPZ for web filtering. High-volume systems and non-filter uses such as security research should use rsync.

For more information, please contact your SURBL reseller or see the references in Links.

Sign up for SURBL Data Feed Access.

  • Sign up for data feed access

    Direct data feed access offers better filtering performance with fresher data than is available on the public mirrors. Sign up for SURBL Data Feed Access.

  • Applications supporting SURBL

  • Learn about SURBL lists