Occasionally, we see a perplexed blog owner asking a popular question about custom domain setup. Does my domain really need four servers? Some even seem to think that newer domains, with less readers, can get by with less - even one - servers. Won't one server do - at least, for newer blogs? Theoretically, yes. But not one server is going to be 100% reliable, or last forever. Every computer ever made, like every human born, will die, one day. Your blog (and your domain) depends upon DNS, to resolve its address . Address resolution is an essential part of helping your computer (your readers computers) connect with the computer where your blog is stored.
What Blogger won't tell you