Understanding DNS: How to Register for, Configure, and Change DNS Service (2000)

DNS (the Domain Name System) is the process by which words from a common recognizable language, like www.certaintysolutions.com, are converted to IP addresses, such as 198.151.248.248. Software such as mail readers and Web browsers actually use the IP address rather than the DNS name when sending and receiving e-mail or connecting to a Web site. Since humans (and program preference files) use DNS names almost exclusively, when DNS service for a domain doesn’t work, your site is effectively off the Internet, even if your site is up and functioning in all other ways. This makes reliable DNS service a vital piece of your Internet-based service, both when you set up your site and whenever you move machines or change providers. In order to understand what potential problems are associated with setting up initial DNS or in transitioning from one provider to a new one, all the pieces involved first need to be clearly understood. In this paper, we will explain how DNS works, the components involved, set-up requirements, and the potential problems that could arise if it is not working or set up correctly. We will also take a look at problems that can occur when transitioning to a new provider. [via]

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Understanding DNS: How to Register for, Configure, and Change DNS Service (2000)

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