Authentication

DMARC Report Analyzer

Parse and visualize DMARC aggregate reports. Understand authentication failures and sources.

How to use

  1. Export your DMARC aggregate report (XML format)
  2. Upload or paste the report content
  3. Click 'Analyze Report'
  4. Review authentication pass/fail statistics and source IPs

Frequently asked questions

What is a DMARC aggregate report?

DMARC aggregate reports are daily/weekly XML files sent by receiving mail servers showing how your domain's emails performed against SPF and DKIM checks.

What does alignment mean in DMARC?

Alignment means the domain in the From header matches the domains authenticated by SPF and DKIM. Strict alignment requires exact match; relaxed allows subdomains.

Why am I seeing failed authentications from legitimate sources?

Common causes: email forwarding breaks SPF, third-party services not configured in SPF, DKIM not set up for all sending services, or misconfigured subdomains.