How to look up mail (MX) records

1. Enter the domain

   Type the bare domain (e.g. example.com) into the Domain field — not the full email address. Up to 253 characters.

2. What MX records are

   MX records tell the world which mail server accepts email for a domain, plus a priority value (lower = preferred). A domain without MX cannot receive mail at all.

3. Press Run

   The server queries DNS for MX records and returns them sorted by priority. The lowest-priority host is tried first; subsequent hosts are fallbacks.

4. Use the result

   Output is an mx array of { exchange, priority } pairs. Compare it to what your mail provider documented; mismatches mean your DNS is misconfigured.