Knowledge Base

Access New Sectigo Public Certificate Chain

Learn how Sectigo validates the legal identity, signer identity, assumed name, and physical address of an organization that applies for a VMC or CMC.

Check whether your organization is eligible for a VMC or CMC and learn which validation checks Sectigo performs before issuance.

Learn who the Contract Signer, Requester, and Approver are for a VMC or CMC order, how they are identified, and how their identity is verified.

Replace or reissue a VMC or CMC to update organization details, domains, logo, or CSR, and learn which changes need revalidation.

Create a DNS TXT record for BIMI so that your VMC logo can display in email for each domain or subdomain.

Explains what a pre-validation order is in the Sectigo Account Portal and how to locate its order number and current validation status.

S/MIME certificate validation verifies identity, mailbox control, and authorization to ensure secure email communication. Customers can expect steps like email verification, agreement completion, and callback authentication to prevent fraudulent certificate issuance.

The reason you will see this error message is that an email certificate has already been issued to your email address. If you want to get a new one, then you will have to first revoke the current certificate.

This article references key information from Apple’s Policy Requirements page