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DNS Records Overview — The Definitive Beginner Guide

Complete reference to all fundamental DNS record types (A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, PTR), zone syntax, and inspection commands.

TXT Records — SPF, DKIM, and DMARC Syntax Masterclass

Complete beginner guide to writing, parsing, and debugging SPF, DKIM, and DMARC TXT records, understanding qualifiers, tags, and avoiding the 10-lookup limit.