Google still detect old URLs from blogspot:
But when I try access old data URLs, it's already a 404. That leads to so many anomalies crawling and Google sometimes detects 5xx errors.
In WordPress I have already been using permalinks like
/%postname%/ for 3 years. I have thousands of URLs like that.
What best choice for that problem?
- Redirect all with 301 to homepage
- Send "410 Gone" status for those URLs
- Something else