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To implement DNS Blocklists, it is heavily recommended to run your own CachingNameserver

SpamAssassin Policy for DNSBL Inclusion

The SpamAssassin Policy for DNSBL Inclusion is available at DnsBlocklistsInclusionPolicy

Black Lists

Support for the following DNSBLs is built-in, and shipped in the default configuration.

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• URIBL http://www.uribl.com/ NOTE: URIBL is enabled as a "free for most" provider. See: http://www.uribl.com/about.shtml.

Policy Lists

The following DNSBLs are not specifically about spam, but instead about sites which break net policies and conventions... practices which are often associated with spammers.

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• RFC Ignorant http://www.rfc-ignorant.org/ NOTE: RFC Ignorant is controversial. Some administrators may wish to disable or lower the score for the RFC Ignorant list

Whitelists

The following DNS checks are actually for WHITE lists, or sites which are certified by someone to be a reasonable sender.

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