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MX Record Checker
List MX records to see which mail exchangers handle email for a domain and validate deliverability setups.
How to use this tool
- Enter the domain and query MX records.
- Review preference order, mail exchanger hosts, and TTL details.
- Export results when validating new mail routing or troubleshooting delivery.
What you can inspect
- MX hosts with preference values in resolver order.
- TTL windows that affect when remote systems pick up updates.
- Additional section data for related A/AAAA glue records when available.
Operational checks
- Validate failover order before and after provider migrations.
- Cross-check receiving hosts against SPF, DKIM, and DMARC plans.
- Track bounce behavior until TTL expiry after record updates.
FAQ
- What does MX priority 0 mean?
- Lower values are preferred first. A priority of 0 usually indicates the primary target in your MX set.
- Why might no MX record be returned?
- If no explicit MX exists, some servers fall back to the domain A record. Add MX records to control delivery behavior.
- Are SPF and DKIM configured here?
- No. SPF, DKIM, and DMARC are TXT records and should be validated separately.
Resources
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