Running Zimbra on HTTPS Rumi, June 11, 2012 1. First you need to su as 'zimbra' user 2. go to /opt/zimbra/bin/ 3. Use the following commands to enable SSL: ./zmtlsctl https ./zmcontrol restart Now it's working like a charm. For other readers: I can only access to webclient by SSL now (but that's ok for me). other options are: [mixed|both|http|https|redirect] Administrations Configurations (Linux) CentOSzimbra