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Blacklist Lookup is an email reputation service, where we check domains and IP addresses to make sure they are not known for spam or other problems.
The Blacklist Lookup service allows you to check if your domain name or IP address is listed in any of the various blacklists. This is a free service (a non-mandatory fee may apply in some cases - see the website for details).
The Blacklist Lookup service will check your domain name or IP address against various blacklists. It is possible that your domain name or IP address is listed in one or more blacklists. If it is, it will appear on the results screen together with the description of your listing(s).
It basically uses machine learning to predict if a domain or IP address will have issues sending mail. For example, if a domain has been blacklisted in the past, it will continue to be blocked. Over time, this tool checks many different sources to make sure you’re protected.
It uses an algorithm to predict the likelihood that a domain or IP address will have issues sending mail. A good score means your domain and IP addresses should have fewer issues sending emails.
A bad score means your domain and IP addresses may have more trouble sending emails.
It is recommended to follow the Best Practices to reduce the chances of your domain or IP address having delivery issues.
Your goal is to get the best Blacklist Lookup scores. If you have a very low score, it means that you have bad mailing habits. Mails sent by you might be blocked because they are classified as spam. There can be many reasons that cause bad scores on Blacklist Lookup: