Knowledge Base

Learn how to achieve DMARC compliance for Verified Mark Certificates (VMC). This guide explains DMARC, its importance for email security, and step-by-step instructions for configuring SPF, DKIM, and DMARC records.

Learn how to resolve SSL/TLS certificate errors caused by incomplete chains. Understand why intermediate certificates matter, how to verify your chain, and best practices for secure configurations.

Access New Sectigo Public Certificate Chain

This article provides details about Intermediate Certificates, such as; who issues them, who sends them, how to install, and links to download them.

WHOIS Email DCV Deprecation

Understanding Certificate Transparency (CT) Logs and Precertificates

Enterprise Public Key Infrastructure (E-PKI) Manager User guide

Hardware protection helps prevent signing private keys from being extracted or copied. This article explains what that means when your Sectigo certificate order includes a physical token.

How to request a Verified Mark Certificate (VMC) in SCM, prepare your SVG logo, and publish your BIMI record.

This article explains how to check the EKU values in a downloaded certificate on Windows and confirm that Server Authentication and Client Authentication are present.