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DMARC Checker (analysis)

Analyze and validate DMARC records for any domain

DMARC Generator

Build your DMARC record step by step with guided options

Email Protection Policy

Recommendation: Start with "Monitor Only" to understand your email flow, then gradually strengthen.

Policy Coverage

%
Gradual rollout recommended:
Start with 10% to test your setup, then gradually increase to 25%, 50%, and finally 100% as you gain confidence.

What does this mean?

If you set 25%, only 1 out of 4 emails will be subject to your DMARC policy. The other 75% will be processed normally. This allows you to test safely.

Reporting Configuration

Email addresses for daily summary reports. One per line or comma-separated. "mailto:" will be added automatically.
Email addresses for detailed failure reports. Warning: May contain sensitive data!

Authentication Alignment

What is alignment?
Alignment determines how strict DMARC is when checking if SPF and DKIM match your domain. Relaxed mode allows subdomains, strict mode requires exact matches.

Expert zone: These settings are for advanced users who understand DMARC forensic reporting. Most domains can skip this section.
seconds
How often to request aggregate reports. Default: 86400 seconds (24 hours). Minimum: 3600 seconds (1 hour).

DMARC Record Editor

Enter or edit DMARC record to validate its syntax

DMARC

DMARC tells receivers how to handle mail that fails SPF or DKIM and provides reports to help fine‑tune policy.