[Djigzo users] Using the Web GUI certificate for SMTP TLS, changing MTA config file

I read in the manual that changing the TLS configuration for the SMTP server through the GUI is available only in the 'Enterprise' version, We've installed a third-party (Digicert) certificate for the Web interface. Would it be possible to modify the MTA config file to use this Web certificate for SMTP TLS as well? It now points to a self-signed certificate I assume: # server side TLS configuration smtpd_tls_cert_file = /etc/postfix/tls.pem smtpd_tls_key_file = $smtpd_tls_cert_file Regards, Michel Erdmann