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Kiln
Tools

Email

MX record checker

Read the MX records for a domain. The result lists mail servers and their priority. It does not mean any mailbox exists or that mail will be delivered.

This one uses a server lookup because the job cannot finish on the device alone.

The part after @ in an email address. The check does not contact the mail server.

Examples

Load a sample into the form, then run it.

How to use it

  1. 1Enter the domain, not a full email address.
  2. 2Choose Check.
  3. 3Read the mail servers in priority order. A lower number is preferred.
  4. 4Copy the result if you need to share it.

When it helps

  • See which provider receives mail for a domain.
  • Confirm a new MX record is visible to a public resolver.
  • Tell a missing mail server apart from a syntax problem in an address.

Good to know

  • mailboxVerified stays unchecked. There is no SMTP conversation.
  • A public resolver cannot see private DNS.
  • At most eight mail servers are listed.
  • Addresses shown next to a server are DNS answers. Kiln does not connect to them.

Questions

Does this prove the mailbox exists?

No. MX records name mail servers for the domain. They say nothing about one address at that domain.

Why is there no mail server?

The domain may not send or receive mail, or the record may not have reached the public resolver yet.

Related tools

  • Email syntax validator

    Email syntax validator

    Check whether an email address is formatted correctly. This does not prove the mailbox exists.

    Email

  • SPF record checker

    SPF record checker

    Read and explain the SPF policy a domain publishes. This does not prove mail will be delivered.

    Email

  • DMARC record checker

    DMARC record checker

    Read the DMARC policy at _dmarc. This does not prove mail will be delivered.

    Email