MX Lookup

Check the mail exchange records that receive email for a domain.

MX records

Shows which mail servers receive email for this domain.

When MX records matter

MX records tell the internet which servers accept mail for a domain. Broken or missing MX records can stop incoming mail completely.

Use this when setting up a custom domain, moving mail providers, debugging verification emails, or checking whether a domain can receive mail.

Recommended next steps

Use the full health check when one DNS record is not enough to explain inbox placement.

Read the guides for SPF, DMARC, DKIM, and blacklist cleanup.

Common technical reasons legitimate email lands in spam and how to investigate them.

Learn which email headers explain sender identity, delivery path, and authentication results.

It points a domain to the mail servers that should receive incoming email.

Sometimes receivers fall back to an A record, but modern mail setups should publish clear MX records.