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

DSBL http://dsbl.org/ BR NAJBL NJABL http://www.njabl.org/dynablock.html BR RHSBL AHBL dnsbl.ahbl.org BR SORBS http://www.sorbs.net/ BR Spamhaus PBL+SBL+XBL http://www.spamhaus.org/ BR SECURITYSAGE blackholes.securitysage.com BR SPAMCOP http://www.spamcop.net/ BR MAPS http://www.mailabuse.org/ BR If you're installing SpamAssassin for site-wide use, you must license their services; mail-abuse.org is now only free for personal use. (Note that SpamAssassin still works very well without using these services, however.)

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

DNSWL http://www.dnswl.org/ BR Bonded Sender Program Trusted sender in Bonded Sender ProgramBR IADB Vouched ISIPP Vouched for SenderBR Habeas Accredited Senders Habeas accredited senderBR

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Other places to find out about DNS blacklists / blocklists:

• Spamlinks http://spamlinks.net/filter-dnsbl.htm
• Dr. Jørgen Mash's DNS database list checker http://moensted.dk/spam/
• List of All Known DNS-based Spam Databases (blacklists) http://www.declude.com/junkmail/support/ip4r.htm
• Current Blacklist Comparison (note: no statistics for false positive rates) http://www.sdsc.edu/~jeff/spam/cbc.html
  

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