DNS Configuration Guide

Configure DNS records correctly for your domain. Understand record types, TTL settings, and common configurations for web servers, email, CDNs, and service verification.

Usage

Ask about configuring DNS records, troubleshooting DNS issues, or setting up DNS for specific services.

Examples

• "What DNS records do I need for my web application?"
• "How do I set up MX records for Google Workspace?"
• "My DNS changes aren't taking effect — how do I debug this?"

Guidelines

• Use A records for IPv4 addresses and AAAA for IPv6
• CNAME records cannot be used at the zone apex — use ALIAS or ANAME instead
• Lower TTL values before making changes, then raise them after verification
• Always add SPF, DKIM, and DMARC records for email deliverability
• Use dig or nslookup to verify DNS changes from multiple resolvers