MX Lookup
Show the mail servers (MX records) behind any domain, for deliverability checks or email troubleshooting.
Processing: server lookup
How to use this tool
- 1Type a domain name (like gmail.com).
- 2Read the returned MX host names and priorities.
- 3Use the results to diagnose undelivered emails.
Frequently asked questions
What does priority mean?
Lower numbers are tried first when delivering mail for the domain.
Why 0 MX records?
The domain may not accept mail at all, even if it gets web traffic.
Does it work for subdomains?
Yes — type the exact subdomain whose MX you want to inspect.