What's Spamhaus?

Spamhaus is an organization that tracks email spammers and spam-related activity by compiling anti-spam lists. It is mainly used by internet service providers and email servers to reduce the amount of spam that reaches their users.
 
If your IP address is "blacklisted" by Spamhaus, your emails will be rejected if the domain you are trying to contact uses Spamhaus. The best way to solve this is by contacting your internet service provider (ISP) to request the de-listing of the IP address in question.
 
If the issue still persists after you have requested de-listing, you can contact us and provide us with a recent bounce message and the body of the email you tried to send so we can further investigate why the email was identified as spam.