MX Record Checker
Find the mail servers a domain uses, in priority order.
How this lookup works
MX records tell other mail servers where to deliver a domain’s email, each with a priority number. The lower the number, the more preferred the server. This tool queries two public resolvers directly from your browser and lists what they return.
What the results mean
- Priority
- Lower is preferred. Mail is delivered to the lowest-numbered server that responds; the higher ones are backups.
- No MX records
- The domain has not published mail servers. Either it does not receive email, or it relies on an A record as a fallback — which is discouraged.
Frequently asked questions
Why are there several MX records?
Redundancy. If the preferred server is unreachable, sending mail servers fall back to the next priority. Large providers publish several so email is not lost during an outage.
Does an MX record mean email is working?
No. It means the domain has told the world where to deliver mail. Whether those servers actually accept and route it is a separate question this tool does not test.