All questions
Q & A Email Auth · August 18, 2026

What is a DMARC aggregate report (rua)?

DMARC aggregate reports are XML files sent daily by receiving mail servers (Gmail, Outlook, Yahoo, etc.) to your rua email address. They contain: sending IP addresses, message counts, SPF/DKIM pass/fail for each source, disposition applied. You need a report parser (Google Postmaster Tools, Postmark DMARC, Dmarcian, Valimail) to make them readable.

Read the full guide
What Is DMARC? How It Stops Email Spoofing
DMARC is the enforcement layer of email authentication. SPF and DKIM do the checking — DMARC tells receiving servers what to do when they fail, and reports back to you who's sending email using your domain.
Related questions
Do I need DMARC if I already have SPF and DKIM? Does Cloudflare proxy break DMARC? How do I set up DMARC for Google Workspace? How do I set up DMARC for Microsoft 365? How do I verify my Mailchimp DMARC alignment?