MX Lookup

List a domain's mail servers (MX records) in priority order with their IP addresses.

Continue your work

SPF Record Checker — Check which servers may send mail for the domain.
Email Verifier — Check whether an address at the domain can receive mail.

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Clear instructions

Find steps, examples and limitations below.

Use online

Open the tool in a supported web browser.

Free to use

No sign-up required. Tool-specific limits may apply.

How to use the MX Lookup

List a domain's mail servers (MX records) in priority order with their IP addresses.

1 Enter the domain part of an email address, such as gmail.com for name@gmail.com.
2 Click Find mail servers.
3 Check the priorities and hosts. Lower numbers are tried first, and the detected provider is shown when recognized.

Example and practical tips

An MX lookup for a company moving to Google Workspace should show smtp.google.com (or the older aspmx.l.google.com servers). If the previous host still appears, mail is still going to the old provider.

Frequently asked questions

What is an MX record?

A mail exchanger record names a server that accepts email for the domain, with a priority number. Senders try the lowest number first.

What does a null MX mean?

An MX record pointing to “.” declares that the domain does not accept email at all.