Episode Details

Episode DescriptionAnyone with a laptop can send an email that pretends to be your company. Because the email system we all rely on was built to move messages rather than verify who is actually sending them, a fake invoice or a fraudulent note from your manager can easily land in a real inbox with your name on it. Fortunately, three records in your DNS can quietly close that gap—yet a surprising number of organizations only ever set up one of them.

In this episode of M365 FM, we break down SPF, DKIM, and DMARC in plain words so a stranger can never wear your company's name again. Whether you are managing a Microsoft 365 tenant or trying to protect your organization from Business Email Compromise (BEC), this episode walks you through the exact blueprint to safeguard your email infrastructure.

What You Will Learn in This Episode:

• Why Anyone Can Send Email as You: Understand how legacy SMTP protocols were built for an era of trust and why hidden envelope addresses differ from the visible "From" line.
• SPF (Sender Policy Framework): Learn how to set up the "guest list" for your domain, why the 10-lookup limit matters, and how to choose between a soft fail and a hard fail.
• DKIM (DomainKeys Identified Mail): Discover how this tamper-proof digital signature acts like a wax seal to ensure messages aren’t altered in transit.
• DMARC (Domain-Based Message Authentication, Reporting, and Conformance): See how the "referee" ties your authentication checks to the visible domain name through alignment

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This episode includes AI-generated content.