Identify the mail servers that accept messages for a domain

For web teams checking a launch or tracing a fault, this test provides an immediate point of reference. Identify the mail servers that accept messages for a domain.

Identify the mail servers that accept messages for a domain. The result highlights the live configuration and the clues that matter for diagnosis.

How to use

Type the domain you want to inspect into the input field, for instance the one used by your mail provider.
Run the test and wait for the result panel to appear.
Read the list of mail servers returned and note the priority shown next to each target.
Compare those targets with the mail hosts your email provider or hosting company told you to use.
Clear the field and start again with another domain if you want to check a second case.

Example

Your team has just moved to a new mail provider and some messages never arrive. Enter the domain and look at the targets the DNS still points to; an old host left in the zone is a common cause of this kind of delivery problem.

Limits and formats

The lookup only reflects what the public DNS publishes; it cannot prove that a message will actually be delivered or that a mailbox works.
Some domains publish no MX record at all and rely on another mechanism, so an empty answer is not automatically a fault.
Records edited at your registrar take time to appear; wait and run the check again before assuming a configuration mistake.

Where processing happens

The domain you type is sent to the YOORfree server, which queries the public DNS on your behalf and returns the answer shown on screen. No file is uploaded; only the domain string travels with the request.

Frequently asked questions

What does the priority next to a mail server mean?

A lower priority value means the host is tried first. Domains often publish several mail servers so that a backup is available when the primary one stops answering.

Why did I get no result for my domain?

The name may be misspelled, the records may not be published yet, or the domain may simply not use MX records. Check the spelling and run the lookup again a little later.

Can I confirm that a mail server is actually reachable?

No. This check reads published DNS records only. It shows the targets that are advertised, not whether they are online or able to accept a message.