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Hi Praveen, Additional to this, my this answer to a similar question might help you define the quality of the links. https://moz.com/community/q/how-do-you-handle-a-site-with-inherited-negative-links-but-no-penalty#reply_350787 Do check spam links manually, sometimes tools can generate false spam report based on their own metrics and you might lose a valuable link which might be bringing real target traffic to your website. Feel free to respond and ask any questions further. Regards, Vijay