Email Security
SPF, DKIM, and DMARC investigation
Template project page for a polished write-up on sender authentication, spoofing reduction, and policy alignment.
Situation
Describe the original issue, symptoms, and why it mattered.
Environment
Summarize email platform, scope, and any operational constraints.
Investigation
Explain the artifacts reviewed, tests performed, and logic behind the diagnosis.
Outcome
Capture improvements to spoofing resistance, deliverability, or domain trust.