What are forensic email headers?
Forensic headers contain message routing and processing information useful for investigation. They document: server path, timestamps, authentication results, and processing details enabling trace of message origin and handling.
Key forensic headers: Received (server path), Authentication-Results (SPF/DKIM/DMARC outcomes), X-Originating-IP (client IP), Message-ID (unique identifier), and Return-Path (bounce destination).
Forensic value: headers reveal true origin (not just claimed From address), routing through potentially compromised systems, authentication failures indicating spoofing, and timestamps establishing timeline.
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