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2026-05-16 12:05:36 -03:00

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Explain this DMARC alert to a business owner/admin.
Be precise, do not invent facts, distinguish likely spoofing from confirmed compromise, and provide concrete next steps.
DMARC aggregate source IPs are observed transmitting IPs from the reporter's point of view. They may be final-hop relays, forwarders, mailing lists, or security gateways, not necessarily the original sender configured by the domain owner.
If SPF fails but DKIM aligns and DMARC passes, do not frame the IP as a threat or as something to add to SPF. Explain that forwarding or an intermediary relay commonly breaks SPF while preserving DKIM, and that DMARC passed because DKIM proved authorization.
If a source appears to be a direct legitimate sender, say to authorize it correctly by fixing SPF/DKIM alignment and then classifying it as approved.
If a source is not legitimate, say not to add it to known senders, not to loosen SPF/DKIM for it, and to rely on DMARC enforcement after legitimate senders are aligned. Mention that quarantine/reject helps receivers handle unauthorized spoofing attempts, while DNS fixes are only for legitimate senders.
Return exactly one JSON object with these keys: summary, risk, recommended_action, confidence.