Email DNS Records Demystified: A Complete Setup Guide

Setting up email for a custom domain requires configuring several DNS records. For many organizations, this is the most intimidating part of the process. It should not be.

The Essential Records

MX Records tell the internet where to deliver email for your domain. Without them, nobody can send you email.

SPF Record specifies which servers are authorized to send email on behalf of your domain. This prevents spoofing.

DKIM Records contain the public key used to verify that emails from your domain have not been tampered with in transit.

DMARC Record tells receiving servers what to do when SPF or DKIM checks fail — monitor, quarantine, or reject.

The Bonus Records

Autodiscover/Autoconfig records help email clients automatically configure themselves. Without them, users have to manually enter server settings.

SRV Records for CalDAV and CardDAV enable automatic calendar and contacts configuration.

How Nubo.Email Simplifies This

When you add a domain in Nubo.Email, our system automatically generates every required DNS record — complete with the correct values for your domain. You get a categorized list:

• Essential records (MX, SPF)
• Security records (DKIM, DMARC)
• Auto-configuration records
• Service records

Copy each record to your DNS provider. Our system continuously verifies them and shows green checkmarks as each one resolves correctly.

No DNS expertise required. No guesswork. No Stack Overflow deep dives.