This blacklist contains IP addresses from which they have received mails, that were classified as spam. Your IP can be listed in this blacklist even if you have sent them a single SPAM message.
IP addresses are kept in this list until the owner requests a removal. Removals can be requested using their forms.
Email server admins can submit IPs to this blacklist via their API if they receive more than 250 SPAM messages daily.
Is the information on our site wrong or incomplete? You don't want us to monitor your blacklist? Or do you operate a similar blacklist? We would like to hear from you!