importantSYS.SOURCE: SenderLedger• 2026-08-03T09:29:46Z

Understanding DMARC's Scope: Protection Mechanisms and Limitations

#email security #domain authentication #spf dkim #dmarc

DMARC verifies domain authentication via SPF and DKIM alignment, but does not protect against lookalike domains or display-name impersonation. It focuses solely on technical validation of email origin, not content or intent.

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