Network Tools

MX Record Lookup Guide

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

What this guide covers

Use this free MX Record Lookup tool to check the mail exchange records for a domain and see which servers are configured to receive email for it. It is useful for troubleshooting email delivery problems, verifying mail provider setup, checking migration changes, reviewing priority values, and confirming whether a domain is pointed to the expected mail service before deeper SMTP or inbox troubleshooting.

This guide explains when to use MX Record 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 Record Lookup

See which mail servers are configured to receive email for a domain
Check whether a domain points to the expected email provider
Verify MX changes after mail migration or DNS updates
Review priority values before troubleshooting email routing
Get a fast mail-routing check without using terminal tools

How to use MX Record Lookup

Paste the domain name into the input box
Click Run Tool to fetch MX records
Review the returned mail servers and priority values
Compare the result with the mail provider you expected to see
If needed, follow up with DNS Lookup or TXT-related checks for broader mail troubleshooting

Best use cases

Checking whether a domain points to the correct mail provider
Verifying MX changes after email migration
Reviewing mail failover priorities for a domain
Troubleshooting email delivery setup before deeper SMTP investigation
Confirming whether a domain has any explicit mail routing records at all

Common mistakes

Assuming MX records alone prove email will work correctly

Fix: MX records are only one part of mail setup. TXT, SPF, DKIM, DMARC, mailbox provisioning, and provider-side settings may also matter.

Ignoring MX priority values

Fix: Check both the mail hostnames and their priority order to understand primary and backup routing.

Expecting email changes to work immediately after updating DNS

Fix: Allow time for propagation and caching, especially after migration or provider changes.

Confusing MX records with website hosting records

Fix: MX records control incoming mail routing, not website resolution.

Stopping at MX when the real issue is SPF, DKIM, or mailbox-side configuration

Fix: Use MX as a routing check, then continue with broader mail diagnostics if delivery still fails.

Use the tool

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

Open MX Record Lookup