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How does the DNS work?

DNS is similar to a phone book: if you want to call someone, you don't need to know where their house is—you just look them up in the phone book, and their number appears there. This makes it easy for people who don't know each other very well (like strangers) or don't have any reason to trust each other (like competitors) to connect with each other securely without having to exchange personal information first.

Similarly, the DNS converts human-readable domain names into IP addresses that computers can understand. When you type in a domain name like, your computer asks a DNS server to translate that into an IP address so it can connect to Google's servers and load their website in your browser.


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Email Authentication Fundamentals