Reading DMARC Aggregate Reports
Email Security 9 min

Reading DMARC Aggregate Reports

Most people set up DMARC and never look at the RUA reports. The XML is dense. Here's how to read it and use the data to tighten your policy.

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SMTP TLS Reporting (TLS-RPT) Explained
Email Security 5 min

SMTP TLS Reporting (TLS-RPT) Explained

TLS-RPT tells you when TLS negotiation fails between mail servers on your domain. Most organizations have never enabled it. Here's what you're missing.

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Understanding SPF, DKIM, and DMARC
Email Security 3 min

Understanding SPF, DKIM, and DMARC

SPF, DKIM, and DMARC are the three core email authentication standards. Understanding how they work together is essential for business email.

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What Is DMARC and Why Is It Important?
Email Security 2 min

What Is DMARC and Why Is It Important?

DMARC is the DNS policy layer that ties SPF and DKIM together. A short introduction to the record format, policy modes, and what publishing one actually does.

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