SPF, DKIM & DMARC
SPF checks the sending path, DKIM verifies a signed message, and DMARC connects authentication to the visible From domain. None of them judge intent.
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Email Security guides
Sender verification, phishing defense, authentication, allowlisting, and high-impact message controls.
3 focused guides
Operational reading for email security
Use these articles as a connected path: begin with the immediate problem, then follow the internal links into supporting controls and limitations.
Safe Email Allowlisting
An allowlist can rescue wanted mail—or bypass controls an attacker was counting on. Use scoped identities, expiration, monitoring, and a clear owner.
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Spot a Phishing Email
Phishing detection is not a grammar test. This guide shows how to pause, verify the request through a trusted channel, inspect evidence, and report safely.
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