Email Security Basics
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Operational Checklist
Email Security Basics
Review MFA, recovery ownership, administrator access, SPF, DKIM, DMARC and suspicious-message handling for business email.
Reviewed by Ahmed Gaber · Published September 11, 2026 · Updated September 15, 2026
Related resources
Tools and guides for this checklist.
Security tool
Email DNS Health Check
Review MX, SPF and DMARC together in one quick domain check.
Open tool Security toolSPF Inspector
Find and review the published SPF policy for a domain.
Open tool Security toolDMARC Inspector
Check whether a domain publishes a DMARC policy and view it.
Open tool Practical guideSPF Email Authentication Guide
Read an SPF record and understand includes, IP mechanisms and soft-fail or hard-fail endings.
Read guide Practical guideDMARC Policy Guide
Understand DMARC monitoring, quarantine and reject policies without breaking legitimate mail.
Read guideKnowledge map
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