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A DNSBL or DNS Block List is a list of IP addresses that have been identified as sources of unwanted or unsolicited email, also known as spam. These lists are used by email servers and other mail-related systems to filter and block incoming messages from known spam sources, in order to protect users from unwanted email. DNSBLs work by publishing a list of IP addresses that are known to be associated with spam, and then checking incoming messages against this list to determine whether they should be delivered or blocked. This can be used by email administrators to block spam from reaching their users, or by individual users to block spam in their personal email accounts.
Questions and Answers
- Frequently Asked Q & ACommonly asked questions. If you have a question, it's likely already be answered here.
- What is a DNSBL or DNS Block List?A list of IP addresses that have been identified as sources of spam, used to block unwanted emails.
- How to remove your IP Address?Follow the instructions here to complete the removal of an IP address from 0spam DNSBL
- Why is my IP address listed?Common reasons your IP may be listed in the 0spam DNSBL.
- Q & A | How is 0spam funded0Spam is supported by donations and additional services.