Your DNSBL blocks nothing at all
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Your DNSBL blocks nothing at all
Sometimes a misconfiguration can make it appear that a DSNBL is blocking nothing.
- The most common reason for this is a spelling error in the mailserver or DNSBL configuration.
- If you are using a free “open DNS resolver” service such as the Google Public DNS (8.8.8.8) in most cases they will return a “not listed” (NXDOMAIN) reply from Spamhaus’ public DNSBL servers.
- We recommend using your own DNS servers when doing DNSBL queries to Spamhaus. If that is not possible contact Spamhaus Technology for other options.
NOTE: Other free/open DNS resolvers include Alternate DNS, Comodo Secure, DNS.Watch, DynDNS, FreeDNS, Hurricane, NeuStar DNS Advantage, Norton ConnectSafe, OpenNIC, Puncat, Quad9, SafeDNS, Uncensored, Verisign, Yandex.DNS, or large cloud/outsourced public DNS servers, such as the ones operated by Level3, Verizon or AT&T. There are many more; this is not a complete list.
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