Add or Remove Intermediate Certificates

Some certificates that are not defined as trusted root certificates still need to be stored in order to verify a customer’s certificate, that is, the one that was used to sign the customer’s S/MIME email. These are called intermediate certificates and are automatically extracted from emails, requiring no intervention on your part.

1. Click Configuration on the navigation pane.
2. Expand Site Configuration and double-click File Manager.
3. Click the Switch To drop-down list and select Intermediate Certificates.
4. Click Browse and select the intermediate certificate file you want to upload.
   The file should be in DER Encoded Binary X.509 (.cer, .crt) or Base-64 Encoded X.509 (.pem) format.
5. Click Go to upload the file.
6. To delete an intermediate certificate file, click the Delete File icon on the line that contains the file you want to delete.
7. Click OK to confirm the deletion.