I was looking for anonymous FTP servers, and when I clicked on one of the links, I got the error message ERR_NAME_NOT_RESOLVED. I'm guessing (for obvious reasons) that this means the DNS server could not resolve the domain name to an IP address. What is the probable reason for a failure to resolve a domain name? Can I solve this problem by changing to a different DNS server, or is the problem something else, like the server no longer exists? I'd prefer technical information to step-by-step instructions, please. I'm not just looking for an immediate solution to the problem; I want to actually understand what's going on.