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Q: This documentation doesn't seem to cover how to configure dns-blocklists. It says "Support for these is built-in" but I can't believe that all free BL's is called each time a mail is beeing checked. There must be a way to configure which to use.

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A: [SpamAssassin] ships with support for a number of the best DNSBLs.  See You're right.  You might look at the \[http://spamassassin.apache.org/doc/Mail_SpamAssassin_Conf.html Mail::SpamAssassin::Conf\] documentation page which I admit doesn't really say how to configure which DNSBL to use, andor the rules file \[http://old.spamassassin.org/full/2.6x/dist/rules/20_dnsbl_tests.cf 20_dnsbl_tests.cf\], for internal details and, but no clear examples of how to configure addthe inclusion additionalof DNSBLvarious lookupDNSBLs rules.  Note thateither.  For the latest list of DNSBLs you want to be using [SpamAssassin] version 2.63 or 3.0.0-pre2, for the same reason that you wouldn't use an out-of-date virus scanner, but that also doesn't really have anything to do with the question. 

To eliminate the use of a particular DNSBL, set the score to zero. Put lines like

score RCVD_IN_RFCI 0

score RCVD_IN_ORBS 0

score RCVD_IN_DSBL 0

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in your local.cf if you don't want certain DNSBLs listed in \[http://old.spamassassin.org/full/2.6x/dist/rules/20_dnsbl_tests.cf 20_dnsbl_tests.cf\] to be used.  If you don't want _any_ DNSBLs used, put a line like

skip_rbl_checks 1

in your local.cf

Q: The dns-blocklists just don't appear to be used. What is going wrong?

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