joined:Nov 24, 2017
Hi everyone, I am new to the forum, I hope I am writing in the right section.
I have a very large number of crawl errors consisting of links incoming to now 404 pages, that I figure were old URls that "disappeared" from the domain as a result of a redesign a few years ago. The old pages were not redirected to match the new URL structure.
The non existent 404 pages have a combination of incoming links some being spammy links, others internal links from other non existing pages, and yet other links come from legit sites. Many of these 404 pages have got large numbers of incoming links.
These 404s cannot be discovered from the current internal linking structure, as the current pages have to correct links joining them now.
What do you recommend doing? How serious is this issue for SEO in your opinion?