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Due to the proliferation of spam in our online world today, there are several universally available resources on the Internet that list servers that have been identified as sources of spam activity.
If your domain is blacklisted, it means that you have been added to the spam list and the reputation of the domain has been reduced. A blacklist is a list containing blocked domains and IP addresses that users cannot directly access, and the server blocks email from such domains. Our free blacklist checker shows whether the URL or IP entered is listed with the DNSBL database.