The Free Data Query Service

Spamhaus Technology provides the public with free threat intelligence on behalf of The Spamhaus Project.  This enables small-scale users to safely filter their email at no cost.

Usage Terms

If you are a non-commercial entity or a small business with low query volumes, you may qualify for a Data Query Service account with no subscription costs.

Here are the terms related to this service.

Purpose-built plug-ins available

For users of SpamAssassin and Rspamd,  purpose-built plug-ins are available on GitHub to maximize catch rates when using our Data Query Service:

What blocklists are included?

You get FREE access to our IP and Domain DNS Blocklists (DNSBLs).

Are you currently using the Spamhaus Project’s free DNSBLs and experiencing issues?

If you have started to encounter issues with your mail stream because you are outside the Spamhaus Project’s Fair Use Policy e.g.querying via Open DNS or excessive query volumes, please ensure you action one of the following points BEFORE applying for the Free DQS. Otherwise, our registration email may not reach you.

  1. Correctly configure your MTA to accept error codes with these config guides for commonly used MTAs, or
  2. Remove the existing Spamhaus Project DNSBL configuration from your MTA.

How to apply

  1. Complete the form below.
  2. Confirm your email address.
  3. Set up a password for our Customer Portal and login to view access details.

Please enter your details:

To start trial please log into your Customer Portal Account here.