I've migrated version zcs-4.5.11, first on zcs-5.0.18 than on zcs-6.0.3 and XMPP protocol does not working. Zimbra don't listen on ports 5222, 5223 and 5269. When I've installed clean version zcs-6.0.3 everything is working fine. My log /opt/zimbra/log/xmppAudit is empty. How can I start jabber through zimbra commands? Any suggestion?