Network Tools

MX Lookup Guide

Learn when to use MX Lookup, how to use it correctly, and how to avoid common mistakes.

What this guide covers

Use this MX lookup tool to check the mail exchange servers configured for a domain. It is useful for email routing checks, mail setup validation, DNS troubleshooting, and verifying whether mail records point to the expected servers.

This guide explains when to use MX Lookup, how to get a cleaner result, and which mistakes to avoid before moving on to related tools or the main tool page.

Why use MX Lookup

Finds domain mail-routing records quickly.
Useful for email setup, DNS checks, and support work.
Helps confirm which servers receive mail for a domain.
Good for one-off troubleshooting and verification tasks.
Runs directly in the browser with readable DNS output.

How to use MX Lookup

Paste the domain into the input box.
Run the tool to check its MX records.
Review the returned mail servers and priorities.
Copy the result if needed for notes, support, or setup.

Best use cases

Checking mail routing after DNS changes.
Verifying email setup for a domain.
Troubleshooting missing or broken MX records.

Common mistakes

The user enters a full URL instead of a domain.

Fix: Use the bare domain name when checking MX records.

No MX records are returned and the user expects them to exist.

Fix: Check whether the domain uses direct A-record fallback or is simply not configured for mail.

The result is confused with TXT or SPF records.

Fix: Remember that MX records show mail servers, not email-authentication text records.

Use the tool

Ready to run MX Lookup? Open the main tool page to enter your input, generate the result, and copy or download the output.

Open MX Lookup