MX Record Lookup
Check mail server (MX) records for any domain. Priority order.
Shows mail servers in priority order. Lower = higher priority.
MX records tell senders which servers accept email for the domain.
How to use
- Enter a domain, URL, or value relevant to MX Record Lookup.
- Run the check and review the output carefully.
- Apply recommended fixes, then run the check again to verify.
Common use cases
- Pre-deployment validation for MX Record Lookup.
- Incident triage when security checks fail in production.
- Periodic security review as part of technical SEO and hardening.
Example inputs
example.comgmail.comCommon issues and fixes
No MX records
Domain has no MX records. Mail cannot be delivered. Add MX via your DNS provider.
Wrong priority order
Lower number = higher priority. Ensure backup MX has higher number.
Pointing to wrong host
MX must point to mail server hostname. Verify with email provider.
Recommended remediation
Add MX records via DNS. Use provider hostnames (e.g. aspmx.l.google.com). Lower priority = primary. Test deliverability with email-validator.
FAQ
Is MX Record Lookup free to use?
Yes. This tool is free and can be used without account registration.
Do you store submitted values?
Only the minimum processing needed for the check. For client-side tools, data stays in your browser.
How should I use these results?
Use the output as a diagnostic baseline, apply fixes in your stack, then re-run the check to confirm remediation.
Related security tools
DNS Lookup
Query DNS records (A, AAAA, MX, TXT, NS, CNAME) for any domain using public DNS API.
SPF Record Checker
Fetch and parse SPF (Sender Policy Framework) records for a domain to validate email security.
DMARC Record Checker
Verify DMARC DNS records. Policy, RUA, RUF, alignment.
Email Validator
Validate email format and check MX records. Verify if domain accepts mail.