Check a domain's mail servers
MX records tell the world which servers handle email for a domain, and their priority order. When email isn't arriving, or you're setting up a new mail provider, checking the MX records is the first diagnostic step. This tool looks up a domain's mail servers so you can confirm they point where they should.
How to use it
- Enter a domain.
- Read the mail servers and their priorities.
- Confirm they match your email provider's settings.
Where it helps
- Diagnosing why email to a domain isn't being delivered.
- Verifying MX records after switching email providers.
- Checking the mail setup of a domain you manage.
Questions people ask
What does priority mean? Lower numbers are tried first; higher-numbered servers act as backups if the primary is unavailable.
Why don't my new records show? DNS caching means changes take time to propagate based on the record's TTL.