That's not the Zimbra server, I'd hazard a guess that it's Apache answering that and you've got a problem starting Zimbra. As the Zimbra user you should run:
Originally Posted by sonicsteve
From there you can see which services are running. Shutdown apache and disable it from starting at boot then restart zimbra with (as the zimbra user):
You should also be accessing the server by it's url not it's IP address, if you're behind a NAT router you'll need to set-up a Split DNS on your LAN.
zmcontrol stop ; zmcontrol start