MX Record Lookup

ℹ️ About MX Records

MX (Mail Exchange) records tell the internet which servers accept email for your domain. Each record has a priority value — lower numbers have higher priority. Mail is always attempted at the lowest-priority number first, falling back to higher numbers if that server is unavailable.

• Multiple MX records — Provide redundancy. If the primary server is down, mail is delivered to the backup.
• Null MX (RFC 7505) — A single . 0 record tells senders your domain doesn't accept email, preventing bounce-related spam.
• No MX record — Senders fall back to the domain's A record, which is usually not a mail server.

If you're setting up a new mail provider, update your MX records and allow up to 24–48 hours for full propagation before switching over.