MX Lookup

Mail Server Records

Query MX records for a domain to quickly confirm priority and mail exchanger.

Look up MX records online, see who emails are delivered to first.

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Use Cases

  • When enterprise email is newly configured or provider is switched, first check if MX points to correct server
  • Verify mail server resolution and priority when troubleshooting email not received or bounce back issues
  • Confirm MX records have taken effect after switching email service providers
  • Verify domain mail server address and priority settings when building self-hosted mail systems

How to Use

  1. Enter the domain to look up
  2. Tool automatically queries MX record list for the domain
  3. View mail server addresses, priority values, and total record count
  4. Switch sorting method or copy results for email configuration documentation

Features

  • Mail server and priority at a glance: More direct email configuration verification
  • Easier send/receive issue troubleshooting: Switching providers, bounce backs, undelivered emails - check MX first
  • Ops and webmaster friendly: Suitable for enterprise email, self-built mail systems, and pre-launch domain checks
  • Clear and intuitive results: Easy to copy to ops tickets, configuration records, and troubleshooting documents

FAQ

What do MX records primarily determine?

MX records determine which server emails should be delivered to, and the priority order among multiple servers. They are one of the core configurations for proper email reception.

Why are emails not sending or receiving?

Common causes include missing MX records, incorrect priority configuration, unresolved DNS, or related TXT/SPF record anomalies. Checking MX first often quickly narrows down the issue.

Is it suitable for checking enterprise email and self-built mail servers?

Yes. Whether integrating third-party enterprise email or launching self-built mail services, it's recommended to first verify MX records are correct.

Can it be used for pre-launch domain self-checks?

Yes. Especially for projects involving email sending/receiving, notification systems, and ticket emails, checking MX records in advance prevents undelivered emails after launch.