It would be good if there would be an folder volume mapping for the SOGo Container in which you can add Trusted Root Certificates. Some Companys or Users use their own CA to sign their Mails with S/MIME. This Mails are always marked with “Digital Signature is not valid” unless the Certificate is installed. Since this day i have to copy the Certificates in the Container and run a import Script after every update of the Mailcow Stack.