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its best to update the links to the new domain if possible (although official google stance is 301 redirect lose 0 link value). if you can't update the backlink, just make sure the old url to new url redirect is only one 301 redirect (no chain redirects, no temporary redirects) definitely make sure all of your internal backlinks point directly to the new urls.

Hi! It is possible to get an indication of this by using tools like Link Explorer > Inbound links (https://analytics.moz.com/pro/link-explorer/inbound-links). Looking at the linking domain in question and then looking at the "Spam score" column, might help you see if this is good or bad for you. Best regards, Anders

Hi Cristophare79, Hope you are well. which better to rank with 40 DA domain redirect the domain 301 to my website or host domain and create posts with my website link Its always better to build a brand and create useful and unique content. When you have an old domain with some authority, please you must check its backlinks and decide whether they suit the new site. You might need to disavow for a clean start. if I do the 301 redirect the Crawl Errors of old 40 da domain will display on my new website or not Those crawl errors won't appear. Also, you'll be giving Google mixed signals, as many pages from the old domain will be 404 and you'll be confusing Google and probably losing some backlinks how much links can i get from one website pbn There is no magic number. I'd strongly suggest not to use PBNs as Google is now smarter than ever and will find out your schemes, hence penalizing you. which better get links for home page or posts Again, there is no magic answer. There should be a mix and the most natural combination possible.  If I'd be there, posts will be my choice. Always, and as a note to everyone reading this reply, you have to think on one hand, in what will help more you users answering their questions and on the other hand, that humans write Google's algorithms, they will find out if we are messing around with them. Hope it helps. Best wishes, GR