GET INVOLVED AND HELP US FIGHT SPAM! is a free crowdsourcing-based service to help professionals in fighting spam. By pointing your unused domains to the blackhole systems, you are part of the community which allows the professionals working at Service Providers and Security Companies to fight spam much more effectively by letting them know what's unsolicited email communication.


What happens with your domains if you use your domains only for http (or other services) but not for email? will help you from being spammed in the future and will be able to analyze the unwanted email traffic to fight spam efficiently.

You can point your domains to and switch back at any time. You keep full control over your domains. We accept all kinds of domains - each additional domain helps making more effective.


We do not intend to burn or spoil the reputation of domains - we use them to receive from and to respond to people sending unsolicited emails. If you point your domain to the systems, the email traffic sent to recipients of this domain will usually receive a 550 hard bounce code from the mail server, which means there is no email service currently in operation for the recipients. Emails will only be accepted for some recipients if we are sure that the original sender of the email takes care and will take action to avoid sending spam in the future. Thus your domain can be used for a real email service later or at any time again.


Just point your domain to the systems with a so-called DNS MX record, e.g. in a BIND zone file:

yourdomain.tld. IN MX 10

Many ISPs and Domain Registrars offer convenient customer web interfaces to perform this task. And, you may change the MX record for your domain(s) at any time!

Important: Please see the disclaimer at the end of this website. We assume, that you wouldn't want to receive email traffic for your domain, anyway, or anymore. If there is still traffic coming in from a former email domain usage, we assume you don't want it either and don't care. Please follow the Abusix Twitter account to be informed about changes and enhancements which might be implemented in the future.

Warning: It is very important to know, that the domains you point via MX record to the services are currently not used for any email traffic or communication by yourself. Usually, this is a domain you only utilize as a website, but definitely not for email addresses.


If you have pointed your domain(s) to the system, please let us know - so that we have the chance to immediately react and scale the systems properly.

Important: If you plan to point a whole domain portfolio to our systems, it will be necessary to inform us before doing so, so that we can take the necessary steps on our side!

Please contact us via email at or via our contact form.