I have bought recently an expired domain that have like 37k backlinks but I checked and those are real non spammy backlinks, even have some real wikipedia and government sites. The stats are these: DA 21 PA 34, TF 15 CF 26. I also have checked on webarchive and domain have not been never 301 redirected to another domain. What concerns me is about the high number of backlinks, is this bad on eyes of google? Even if the backlinks are non spammy generated by software?