Email Header Analysis Guide
Headers reveal auth outcome and sending path.
Steps
- Open original/raw view
- Check SPF/DKIM/DMARC fields
- Analyze via Header Analyzer
FAQ
Forwarding effects?
SPF may fail; rely on DKIM and DMARC alignment.
ARC?
Used to preserve auth across intermediaries.
Validation & Screenshots
Gmail: Show Original
- Open the test email → three-dot menu → Show original
- Confirm
SPF: PASS, DKIM: PASS, and DMARC: PASS with alignment - Review Authentication-Results details
Screenshot placeholder: /assets/guides/common/gmail-show-original.png
Outlook: Message Header Analyzer
- Open Outlook on the web
- View message details → Authentication-Results
- Or paste headers into Header Analyzer
Screenshot placeholder: /assets/guides/common/outlook-header-details.png
Platform Validators
