I bought a domain on an auction site. I want it to be my money site. before buying it, I checked its backlinks using majestic's fresh index, and there was zero backlinks. Now I used majestic's historic index, and it looks like about a year ago, the guy did some poor quality backlinking. No scrapebox or GSA, just some really low quality directories and two way link exchanges. All of these have been deleted, currently the site has zero backlinks. is this something to worry about? should I abandon this domain? how do I know if it's penalized?