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DMARC reports arrive as XML attachments, nobody understands what is in them

Aggregate DMARC reports (rua) are daily XML summaries of who sent on behalf of your domain. With a free tool like Postmark DMARC, dmarcian-free or valimail.com you read them as a graph instead of XML.

Try this first

  1. 1Create a dedicated mailbox dmarc@yourdomain or sub-address and put it in your rua= tag.
  2. 2Sign up for a free-tier DMARC aggregator (Postmark DMARC, dmarcian, valimail). They parse XML into dashboards.
  3. 3Per sending IP/host read: mail count, SPF pass, DKIM pass, alignment status. Failing and not-yours is spoofing or a forgotten vendor.
  4. 4Categorize: legitimate and aligned (green), legitimate but misaligned (vendor needs DKIM), or unknown (candidate for blocking).
  5. 5Tune SPF and DKIM until all legitimate sources are aligned, then you can move to p=quarantine and later p=reject safely.

When to bring us in

If you want to walk through DMARC reports and identify which senders to align before reject, we can analyze them together.

See also

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