[SURBL-Discuss] RE: [SURBL-Announce] ANNOUNCE: BigEvil.cf and MidEvil.cf are now available in SURBL formas be.surbl.org

Scott Truman Scott at ncs.co.nz
Thu Apr 22 21:32:48 CEST 2004

> BigEvil.cf and MidEvil.cf are now available in SURBL form as
> be.surbl.org, for use with SpamCopURI SpamAssassin 2.63 and
> URIDNSBL SpamAssassin 3.0 plugins.  Thanks Chris, Paul and
> Gary Funck!
> Here's an excerpt about the new list from the Quick Start
> section: 
>   http://www.surbl.org/
> Chris Santerre and Paul Barbeau's BigEvil and MidEvil
> SpamAssassin rules are now available as an SURBL for use with
> plugins and programs such as those mentioned above which can
> extract message body URI domains and compare them against
> name-based RBLs. The name of the list is be.surbl.org, and some
> sample rules and scores to use it appears below. The well-known
> and popular BigEvil and MidEvil SA rulesets are used to block
> messages based on domains that have occurred in spam message body
> URIs. Using this as an SURBL instead allows you to remove this
> relatively large ruleset from SA memory and lets DNS cache the
> data in a zone file instead, querying SURBL hits from DNS as
> needed. 
> An SA 2.63 rule and score using SpamCopURI (but not the SpamCop
> data!) looks like this: 
> uri       BE_URI_RBL  
> eval:check_spamcop_uri_rbl('be.surbl.org','')
> describe  BE_URI_RBL  URI's domain appears in BigEvil
> tflags    BE_URI_RBL  net
> score     BE_URI_RBL  3.0
> An SA 3.0 rule and score using URIBL's urirhsbl looks like this:
> urirhsbl  URIBL_BE_SURBL  be.surbl.org.   A
> header    URIBL_BE_SURBL  eval:check_uridnsbl('URIBL_BE_SURBL')
> describe  URIBL_BE_SURBL  Contains a URL listed BigEvil
> tflags    URIBL_BE_SURBL  net
> score     URIBL_BE_SURBL  3.0
> be.surbl.org can be used alone or with other SURBL lists; all
> that's needed are different rule and score names, as we've shown
> in the samples. More information about be.surbl.org can be found
> in the Additional SURBLs section.
>   http://www.surbl.org/additional.html
> be.surbl.org joins Bill Stearns' sa-blacklist-based ws.surbl.org
> and my own SpamCop URI-based sc.surbl.org SURBLs.  All are
> described more at the site.
> Please send me any questions, comments, corrections, updates,
> etc.
> Cheers,
> Jeff C.
> P.S. We will probably offer a combined list at some point.
> We're still working out the details of that.  Until then it's
> quite possible to use one or more of the lists simply by using
> separate SA rules for each one that you want to use, as shown
> in the Quick Start samples.
> P.P.S. The sample rules have been updated to mention "SpamCop"
> only in the descriptions of rules that actually use SpamCop data.
> -- 
> Jeff Chan

  You seem to put a lot of emphasis on the memory taken up by these two lists in memory. When I removed them, spamd's memory utilisation went down only 1.9MB (down from 33.5MB to 31.6MB). Now unless you are really strapped for memory, I don't see this as a great advantage. What's quicker execution-wise...a regex of the list in memory, or a DNS lookup/eval...I would imagine the later, but does anybody know?
 The obvious advantage is that one doesn't have to update the cf files manually.
What's the TTL for entries in this database?


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