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- SORBS http://www.sorbs.net/ Note: most zones are included except the actual spam zone due to a $50 delisting fee. You can enable it manually it desired.
- SpamCop SPAMCOP http://www.spamcop.net/ SpamCop accepts (automatic) submissions and sends abuse mail in your behalve. SA has a plugin for reporting.
- Spamhaus ZEN http://www.spamhaus.org/zen/ NOTE: Spamhaus is enabled as a "free for most" provider. See: http://www.spamhaus.org/organization/dnsblusage.html.
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- ISIPP Accreditation Database (IADB) http://www.isipp.com/email-accreditation/
- Mailspike http://www.mailspike.net/
- Sender Score Certified & Sender Score Safe List http://www.senderscorecertified.com/ (formerly Ironport Bonded Sender & Habeas Safelist)
URIBLs
The following DNS checks are for URI's (eg http links).
- Spamhaus http://www.spamhaus.org/dbl/ Checking for spamvertized/phishing/malware/botnet/abused redirector sites. Also checking for NS and A records.
Other Lists
Other places to find out about DNS blacklists / blocklists:
- Wikipedia on DNSBLs http://wikipedia.org/wiki/DNSBL
- 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
- Wikipedia on DNSBLs http://wikipedia.org/wiki/DNSBL
- Weekly Blacklist Statistics (including hit rate and false positive rate) http://www.intra2net.com/en/support/antispam/
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