DMARC reporting interpretation for clients

Published Apr 12, 2024 • Updated May 1, 2026

Overview

DMARC aggregate reports (RUA) show authentication pass/fail by sending source—education tool for marketing + IT.

Reading tips

Identify legitimate third-party senders failing SPF alignment; fix DNS or authorize vendor.

Phases

Start p=none monitoring → quarantine → reject once noise low.

Deliverable

Monthly executive one-pager: authorized vs unknown sending volumes.

Common misstep

Forgetting subdomain policies for *.marketing.example.com marketing automation.

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