Domain Name Sanity is a guide to domains for the web-adjacent. It clarifies domains and makes their behavior predictable and debuggable. This book includes the tools and information you need to set up, maintain, and troubleshoot any domain. It even describes how to set up a TLS certificate from scratch.

Domain Name Sanity is written in an informal, conversational style, as if we’re talking while sitting in comfortable chairs. This is not another boring technical manual or RFC, promise.

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