MX Record Lookup Tool

Check MX records instantly across multiple public resolvers to validate your email routing.

How to troubleshoot email delivery with an MX Lookup

If your domain isn't receiving emails, verifying your MX (Mail Exchange) records is the first step. Enter your domain name above to query its active mail servers across global DNS resolvers. This helps identify routing misconfigurations, priority conflicts, or propagation delays.

Interpreting your MX results

  • No MX Records Found: If the lookup returns nothing, your domain cannot receive emails. Senders might fall back to the A record, but this is highly unreliable.
  • Understanding Priorities: The number next to your mail server (e.g., 10 mail.example.com) is the preference value. Lower numbers have higher priority. Mail is routed to the lowest number first.
  • Inconsistent Results: If different resolvers return different mail servers, your recent DNS changes are still propagating. This can cause some emails to deliver to your old provider.
  • Next step: Email Authentication. Correct MX records only ensure you receive mail. To ensure your outgoing mail doesn't go to spam, use our Email DNS Check to validate your SPF and DMARC setup.

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