Real Programmers/ How It Works/ DNS
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DNS: Domain Name System/Service

DNS is an astonishingly complex subject, and this part of the site at this stage only seeks to provide an overview of its operation. Even after years of exposure even full-time sysadmins report feeling unease with their mastery of DNS and how it works. Then spare a thought for those who have only passing acquaintance with it!

The first article here has the target audience of those interested in the most commonly seen aspects of DNS and how to debug basic DNS problems. Later articles will explore the interaction of DNS and mail, more advanced diagnoses, and administering the most common DNS servers.

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