The Blacklist Checker is a free SEO tool that test to see if your IP address or web mail server has been blacklisted. The blacklist test will check mail server IP address in DNS based email blacklists.If your mail server has been blacklisted, email you send may not be delivered to the recipient. If your IP Address is blacklisted, search engines may not display your site in search results.
Why do blacklists exist? Email blacklists are a common way of reducing spam from bots or heavy spammers. If you are not sure of your MX records you can use MX Lookup, a free MX record lookup tool.
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