DMARC Record Checker
Verify domain DMARC DNS TXT records. Analyzes spoofing protection policy (none, quarantine, reject), aggregate RUA reporting, and SPF/DKIM alignment rules.
Queries DNS TXT record for _dmarc.<domain>
How to use
- Enter a domain, URL, or value relevant to DMARC Record Checker.
- 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 DMARC Record Checker.
- Incident triage when security checks fail in production.
- Periodic security review as part of technical SEO and hardening.
Example inputs
validatethis.orggoogle.comgithub.comCommon issues and fixes
No DMARC record
_dmarc.domain has no TXT record. Add DMARC to reduce spoofing and improve email deliverability.
Policy p=none only
p=none is monitoring only. Move to p=quarantine or p=reject for active enforcement.
Missing RUA reports
Without rua=mailto:..., you will not receive DMARC diagnostic aggregate reports from mailbox providers.
Recommended remediation
Add TXT record at _dmarc.yourdomain.com with `v=DMARC1; p=reject; rua=mailto:[email protected]; aspf=r; adkim=r`.
FAQ
Is DMARC Record Checker 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.
DKIM Record Checker
Verify DKIM DNS records. Domain + selector → TXT lookup and parse.
MX Record Lookup
Check mail server (MX) records. Priority order.
Run a full security check
After this tool passes, run related header and policy checks to catch transport and browser-level risks.