Error while restarting zimbra/zmcontrol service Starting ldap…Done. Unable to start TLS: SSL connect attempt failed error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed when connecting to ldap master. Solution su – zimbra zmlocalconfig -e ldap_starttls_required=true zmlocalconfig -e ldap_starttls_supported=1 zmcontrol restart