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This tool tests a mail server IP address against over 100 DNS based email blacklists. If the mail server you are using has been blacklisted, some of the emails which you are sending will not be delivered. The common way of reducing spam email is email blacklists. If somehow anyone doesn’t know their email server's address then they should start with a MX Lookup. During the long term usage of the same ip address, it may chance to backlist and shown message this site can’t be reached by the backlist ip and email is not send and received. Small seo tool provides you with a facility to cheque the status of the website. Its very simple to use just enter url and click on a button and its show listed or not listed database server detail.