Sentura Documentation
Sentura Documentation
Email authentication, explained.
Learn how DMARC, SPF, and DKIM actually work, publish the records the
standards expect, and verify your own domain with our free tools — the
safe path from p=none to p=reject.
Find your path
Learn the fundamentals What DMARC, SPF, and DKIM are, how alignment works, and why p=none isn't enough.
The standards MTA-STS, TLS-RPT, BIMI, DKIM selectors, and SPF flattening — what to publish, and verify yours.
Step-by-step guides Reach enforcement safely, centralise reporting across domains, and meet the 2024 sender rules.
Free tools Check your domain's SPF, DKIM, DMARC, MTA-STS, TLS-RPT, and BIMI posture in seconds — no sign-up.
New to email authentication?
Start with What is DMARC? — it explains the record, the
three policies, and how SPF and DKIM fit together. From there, Why p=none isn’t
enough shows why monitoring alone protects no one,
and the DMARC Enforcement Guide walks the
safe path to p=reject.
Already running Sentura? Your dashboard links every action item back to the relevant guide here.