Loading Empire…

Skip to content

Learn Fix Tools

Search/

Appearance

Filter topics…

Email Foundations

Email as a Distributed System
Actors, Protocols, and Standards
Hosts and Hostnames
IP Addresses and Addressing
Email Fundamentals

Authentication

Authentication

DNS

DNS

Reputation

Reputation

Warmup

Warmup

Deliverability

Deliverability

Inbox Placement

Inbox Placement
- Primary Inbox
- Promotions and Tabs
- Junk Folder

Infrastructure

Infrastructure

Home
Learn
DNS
MX records

Learning path

Authentication
DNS
Reputation
Warmup
Deliverability
Inbox Placement

MX records

Mail exchanger records that direct SMTP delivery for a domain.

Reading time:: 5 min
Difficulty:: Beginner
Estimated duration:: 5 min
Prerequisites:: DNS
Last updated:: 2026-07-15
Author:: empire

Definition

MX records map a domain to mail servers with preference values for SMTP delivery.

Prerequisites

DNSDomain Name System — the lookup fabric email authentication depends on.

DNSDomain Name System — the lookup fabric email authentication depends on.
A recordsIPv4 address records used by hosts and often by mail server names.

Open step-by-step: Publish MX and mail DNSPublish MX and supporting address records for inbound mail.

PreviousCNAME records NextA records

Company

About
Contact
Services

Platform

Learn
Fix
Tools

Community

Empire is a living operator community — share practice, follow releases, and help shape the knowledge base.

Newsletter — coming soon

Legal

Privacy Policy
Terms of Use
Disclaimer
Editorial Policy
Cookie Policy

© 2026 Empire Email

Independent educational platform focused on email infrastructure, deliverability, and lifecycle marketing.