TempMailito
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Free email DNS tool

MX checker

Check a domain's MX records, mail routing hosts, and priorities in seconds.

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Why check MX records?

MX records are the DNS instructions that tell the internet where to deliver email for a domain. Developers and QA teams check them when diagnosing mailbox setup, transactional email delivery, and custom-domain email workflows.

How to read the result

  • Exchange is the mail server hostname that receives email.
  • Priority controls the order in which mail servers are tried.
  • Multiple records usually mean backup mail routing is configured.
  • No records usually means the domain is not ready to receive email.

Temporary email and custom domains

TempMailito uses MX monitoring for public disposable email domains. If you are testing signup flows, QA inboxes, or custom-domain email workflows, you can combine this checker with temporary inboxes and API automation.

View API docs

Related guides

FAQ

MX checker questions

What is an MX record?

An MX record is a DNS record that tells mail servers where to deliver email for a domain.

Does a domain need MX records to receive email?

In practice, domains that receive email should publish MX records. Without MX records, email delivery may fail or be unreliable.

What does MX priority mean?

Lower priority values are tried first. Multiple MX records are often used for redundancy.