I know this is a deep topic, but I would much appreciate your brief help about this.
What will happen if a CMS and the server is not customized and set up in a way to return 404 server header response when a non-existent page is requested? I know this is easy to set in the sever level, but what will happen if someone forgot to do so?
I see that almost all the non-existent pages in my website returns 200 response when they are supposed to return 404.
Thanks for all your help.