DMARC Analyzer

Assesses DMARC, SPF, and DKIM alignment for a domain; analyzes DNS records and aggregate reports to improve email security and deliverability.

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About This Tool

The DMARC analyzer evaluates a domain's email authentication posture by analyzing the DMARC DNS record, SPF and DKIM results, and optional aggregate reports to quantify alignment and enforcement effectiveness. It is designed for security and IT teams responsible for mail trust and compliance.
Conceptually, it resolves the domain's DMARC policy, assesses SPF and DKIM pass status, and checks alignment with the header_from domain using relaxed or strict modes; it then produces a domain health score and actionable actions for policy adjustments.
Audience includes security engineers, email administrators, and compliance officers who need verifiable metrics, policy guidance, and exportable reports for audits or incident response.
Unique value comes from combining DNS-based evaluation with optional aggregate report parsing to deliver concrete policy suggestions and ready-to-share outputs without marketing language.
Core features include DNS DMARC retrieval, SPF/DKIM alignment checks, policy reporting, pass-rate calculations, error handling, and export options.

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How to Use

Provide inputs: domain_name, optional RUAs files.
Run analysis: fetch DMARC TXT, SPF/DKIM results, and parse RUAs if provided.
Review results: assess policy, alignment, and pass rate.
Generate recommendations: suggest policy posture and monitoring cadence.
Export: download JSON or CSV report.

Frequently Asked Questions

Find Quick Answers

What is DMARC analysis?

DMARC analysis evaluates whether a domain's DMARC policy, SPF, and DKIM pass alignment, and how aggregate reports reflect real-world deliverability; it helps prevent spoofing and improve mail trust.

Which inputs are required?

At minimum supply the domain name; optional inputs include aggregate DMARC reports, DNS query settings, and preferred evaluation scope (relaxed vs strict alignment); the tool then performs DNS lookups and report parsing.

What data sources does the tool use?

Primary data comes from the domain's DMARC DNS TXT record and SPF/DKIM results during evaluation; optional RUAs provide real-world pass/fail percentages, enabling more precise domain health scoring and policy optimization.

What outputs can I export?

The tool produces a DMARC health summary including policy, alignment status, pass rate, and recommended actions; exports are available as JSON or CSV for integration with security workflows and incident reports.

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