Email Security Check

Review email-related DNS records in one place, including MX, SPF, DMARC, DKIM, MTA-STS, TLS-RPT, and BIMI.

Results

No email security check run yet.

What this tool checks

Email Security Check reviews the main DNS records that affect mail delivery, spoofing protection, and mailbox trust for a domain. It is the fastest way to see SPF, DMARC, DKIM, MTA-STS, TLS-RPT, BIMI, and MX records together before you investigate a single issue in detail.

When to use it

Check whether a domain has the core email authentication records published.
Review mail posture before a migration, provider change, or DNS cleanup.
Spot obvious gaps before moving into SPF, DMARC, DKIM, or header-level troubleshooting.

Learn more

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Build an SPF record from common mechanisms and review estimated lookup cost.

How to Check Email Security for a Domain

A practical workflow for checking email security for a domain, including SPF, DMARC, DKIM, MX, MTA-STS, TLS-RPT, BIMI, and provider setup.

SPF vs DKIM vs DMARC: What Is the Difference?

Learn the difference between SPF, DKIM, and DMARC, how they work together, and why you usually need all three for a strong email authentication setup.

What Is TLS-RPT? SMTP TLS Reporting Explained

A practical reference guide to TLS-RPT, including what the record looks like, what the tags mean, and how it fits alongside MTA-STS.