Email Security

MX Lookup

Query MX records and resolve mail server IPs for multiple domains.

Each MX target is resolved through A and AAAA records to get IP addresses.

What is MX Lookup for?

MX Lookup shows which mail servers receive email for a domain. It also resolves each MX target to IP addresses, helping with mail infrastructure checks, migration work, and delivery issues.

Recommended workflow

  1. Enter one or more domains to check MX records.
  2. Run the lookup to get MX targets and resolved IPs.
  3. Compare the result with your email provider or current DNS setup.

How this tool works

The tool normalizes each domain, queries MX records, then resolves returned mail exchangers to IP addresses when possible. This makes it easier to verify whether a domain points to the expected inbound mail infrastructure.

Part of this tool group

Open nearby tools in the same group to cross-check, inspect deeper, or complete a small workflow.

Open Email Security hub

Frequently asked questions

Why check MX target IPs?

MX target IPs help confirm that mail servers resolve correctly and support routing or firewall checks.

A few nearby utilities you can open quickly when you need to check more.

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