Free MX Record Lookup Tool – Check Mail Server Configuration
Use UDecode’s free MX record lookup tool to instantly check the DNS mail server records for any domain. MX records control how email is routed and delivered. With this tool, you can quickly identify email configuration issues, verify domain MX settings, and improve overall inbox deliverability.
What Are MX Records?
MX (Mail Exchange) records are DNS entries that define the mail servers responsible for receiving emails on behalf of a domain. For example, Gmail domains have MX records pointing to Google’s servers, while Outlook uses Microsoft’s. Without properly configured MX records, your emails won’t be delivered successfully.
Why Check MX Records?
- Troubleshoot delivery issues – Identify why emails fail or bounce.
- Validate domain configuration – Ensure your DNS and hosting are correctly set up.
- Enhance deliverability – Keep emails out of spam and maintain sender trust.
- Prevent misconfigurations – Detect incorrect MX entries early to avoid downtime.
How to Use the MX Record Lookup Tool
- Enter a domain (e.g., example.com) in the input field above.
- Click “Check MX Records” to perform a DNS query.
- View MX results, including mail server hostnames and priorities.
- If no records appear, that domain cannot receive emails.
Who Benefits from MX Record Lookup?
System Administrators
Verify mail routing accuracy and troubleshoot DNS-related issues.
Marketers
Ensure campaign emails are not bouncing due to DNS misconfigurations.
Businesses
Maintain reliable email delivery and domain credibility.
Developers
Integrate DNS and MX validation in registration or onboarding systems.
MX Records vs Other Email Checks
MX lookups confirm whether a domain can receive mail, but they don’t verify mailbox existence. For complete validation, explore our: Email Syntax Checker, Disposable Email Checker, and Bulk Email Verifier.
Other Free Tools by UDecode
Frequently Asked Questions
What is an MX record?
An MX record specifies the mail server responsible for receiving email on behalf of a domain.
How does MX lookup help in email verification?
MX lookup helps verify if a domain can receive emails. If no MX record exists, the email address cannot receive messages.
What does 'No MX records found' mean?
It means the domain does not have a mail server configured, and emails to that domain will fail.