How does the 0spam service work?
The 0Spam project is supported by donations from great people like you. Donations are used to improve support and functionality of the platform.

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Any time spam is sent to our spam traps, an IP will be listed in the 0spam dnsbl(bl.0spam.org) with the data code of 127.0.0.# and if multiple trap hits are being detected from a single Class C set of IP's the block will be listed in the 0spam Network DNSBL(nbl.0spam.org).
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.
- How is 0spam funded0Spam is supported by donations and additional services.
- How do I configure 0spam for SendmailFollow these steps to configure bl.0spam.org and rbl.0spam.org in Sendmail