Free tool

MX record lookup

Enter a domain to see the mail servers that receive its email, in the order senders try them, and which provider runs them.

Free, no signup. The lookup runs in your browser through public DNS resolvers (Cloudflare 1.1.1.1, Google as a fallback); Skrap.ai doesn't receive the domain.

What an MX record tells you

An MX (mail exchanger) record names the server that accepts email for a domain. When someone sends to [email protected], their mail server looks up the MX records of example.com and delivers to the host with the lowest preference number, trying the next one if it doesn't answer.

  • Preference: lower numbers are tried first. Equal numbers share the load.
  • Host: the mail server's name. Hosted providers run many machines behind one name, so a single MX is normal for Google Workspace or Microsoft 365.
  • Provider: recognised from the host name, e.g. aspmx.l.google.com is Google, *.mail.protection.outlook.com is Microsoft 365. A security gateway (Proofpoint, Mimecast) in front of the mailbox shows up here too.

Results that mean mail will bounce

  • The domain doesn't exist: every address at it is invalid.
  • Null MX (`0 .`): the domain publishes that it accepts no email at all (RFC 7505).
  • No MX record: senders fall back to the domain's A record, which is usually a web server, so mail is likely to bounce.

Frequently asked questions

What is an MX lookup?

A DNS query for a domain's MX records: the list of mail servers that accept email for it, each with a preference number. It shows whether a domain can receive email and which provider handles it.

Why does a domain have several MX records?

For redundancy and load sharing. Senders try the lowest preference first and move to the next if it's unreachable. Records with the same preference share the traffic.

Can a domain receive email without an MX record?

Technically yes: senders fall back to the domain's A record (RFC 5321). In practice that address is usually a web server with no mail service, so mail bounces. Publish MX records for any domain that should receive email.

Does this tool send anything to the domain?

No. It only reads public DNS through Cloudflare's and Google's resolvers, from your browser. No mail server is contacted and Skrap.ai doesn't receive the domain.

Free tools

More free tools

Your Next Customer Is JustOne Search Away

Get StartedPricing Plans
No credit card required100 one-time free credits