How to Configure DMARC Record
To set up DMARC: (1) ensure SPF and DKIM already work; (2) add TXT record _dmarc.example.com with value v=DMARC1; p=none; rua=mailto:reports@example.com; (3) after 2-4 weeks of monitoring switch to p=quarantine, then p=reject.
Step-by-step guide
- Check SPF and DKIM. DMARC works on top of SPF+DKIM. Without them DMARC is meaningless. Check via: /en/email-check.
- Create _dmarc TXT record. In DNS management add:
_dmarc.example.com. TXT "v=DMARC1; p=none; rua=mailto:dmarc@example.com" - Start with p=none. Report-only — nothing blocked. Collect data for 2-4 weeks via rua.
- Switch to quarantine. When you see all legitimate mail passing SPF+DKIM:
p=quarantine— suspicious messages go to spam. - Finally — reject. After 4+ weeks of quarantine without issues:
p=reject— DMARC-failing mail is dropped by recipient servers.
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How it works
Enter email address
Check MX + SMTP
Get validity verdict
Why check email settings?
Proper SPF, DKIM, and DMARC configuration directly impacts email deliverability. Without these records, your emails land in spam or are rejected before delivery.
SPF Check
SPF record correctness: syntax, allowed server list, fail mechanism.
DKIM Analysis
Presence and validity of DKIM signature for the specified selector.
DMARC Policy
DMARC record parsing: policy, rua/ruf reports, SPF and DKIM alignment.
Email Score
Numerical delivery readiness score with improvement recommendations.
Who uses this
Email marketers
mailing list verification
Developers
registration validation
Sales
CRM contact check
Sysadmins
mail delivery troubleshooting
Common Mistakes
?all means "neutral" — that's not protection. Use -all.p=none only collects reports. Move to p=quarantine or p=reject.Best Practices
rua=mailto:dmarc@yourdomain.com — receive weekly aggregate reports.Get more with a free account
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