Free MX Lookup.

Check a domain's MX records in seconds: see which mail servers accept its e-mail, in what priority order, and where they point - and catch mistakes before mail starts bouncing.

MX Lookup.

How does MX Lookup work?

Enter a domain name and click “Check”. Our servers ask DNS for the domain's MX records and list every mail server with its priority and the IP address it resolves to, so you can confirm that mail is routed where you expect.

What are MX records?

MX (mail exchange) records tell other mail servers where to deliver e-mail for your domain, and in which order to try the servers. Wrong or missing MX records make incoming mail bounce or disappear.

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Frequently asked questions.

It sets the order in which sending servers try your mail servers: the lowest number is tried first. Servers with the same number share the load; higher numbers act as backups.

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