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MX Lookup

Check which mail servers receive email for a domain.

MX RecordsEmail DNSCopy ResultsNo Signup

Last updated: May 29, 2026

This tool sends data to our server for processing. Data is not stored and is deleted immediately after your result is returned.

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What is MX Lookup?

MX Lookup queries the mail exchange records for a domain. MX records tell other mail servers where to deliver email for that domain and in what priority order. Lower priority numbers are tried first, with higher priority records acting as fallbacks. This tool shows each mail host, its priority, and the TTL returned by DNS.

How to Use MX Lookup

1

Enter a domain such as example.com.

2

Click Find MX.

3

Review the mail server hostnames and priority values.

4

Copy one record or download the full report.

Common Use Cases

  • Verifying Google Workspace, Microsoft 365, or transactional email MX setup.
  • Checking whether a domain is configured to receive email.
  • Confirming backup mail exchanger priority order.
  • Troubleshooting bounced email caused by missing or wrong MX records.
  • Documenting current email DNS settings before a migration.

Example Input and Output

Mail exchange records for a domain.

Domain
gmail.com
MX records
Priority 5: gmail-smtp-in.l.google.com
Priority 10: alt1.gmail-smtp-in.l.google.com

How This Tool Works

The tool sends an MX query to the existing DNS-over-HTTPS proxy, parses each response value into priority and mail host fields, and displays TTL and copy-ready output.

Technical Stack

MX recordsDNS-over-HTTPSCloudflare resolver

Privacy Note

The queried domain is sent to the WebToolsPlanet DNS proxy and Cloudflare DNS-over-HTTPS. Avoid querying confidential internal domains on public DNS tools.

Frequently Asked Questions

What does MX priority mean?
Lower numbers have higher priority. Sending mail servers try the lowest numbered MX host first, then use higher numbered hosts as fallbacks.
Can a domain have no MX records?
Yes. A domain with no MX records may not accept email, although some legacy behavior can fall back to A records.
Do MX records contain IP addresses?
No. MX records point to hostnames. Those mail hostnames then resolve to A or AAAA records.
Can I use this to verify SPF or DKIM?
This page checks MX only. Use DNS Lookup with TXT records to inspect SPF, DKIM, and DMARC records.
Is this lookup browser-side?
The page sends the domain to a server-side DNS proxy because browsers cannot query DNS records directly.

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