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proskillv2.0.0✓ verified

dns-configuration

How DNS actually works and how to change it safely — record types (A/AAAA/CNAME/MX/TXT/NS/SOA/CAA), TTL and propagation, the CNAME-at-apex problem, email auth (SPF/DKIM/DMARC), and dig-based troubleshooting. Deep reference with runnable record validation.

$npx vanara install dns-configuration

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Overview

DNS is the phone book of the internet: it resolves human names (example.com) into the addresses machines route to, and it tells the world where your mail goes. It is also one of the most common root causes of "the site is down" — a wrong record, a forgotten TTL, or a CNAME where one cannot legally live will take a service offline globally and *stay* broken for as long as the old answer is cached.

What it covers

Details

Tier
Pro — $10/mo
Version
2.0.0
Depth
4 references · 2 examples · 1 runnable scripts
Verification
1/1 runnable checks passing ✓
Runs on
Your own Claude Code — no API keys
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