Email Spoofing via P1/P2 Sender Domain Mismatch Delivered to Inbox

Ankit Mehta@Secvyn

•updated Jun 26, 2026•2•0•5

Detects emails successfully delivered to the inbox that exhibit authentication failures for SPF, DKIM, or DMARC, or where a mismatch between the 'SenderFromDomain' and 'SenderMailFromDomain' is observed, indicating potential email spoofing or unauthorized sender impersonation.