I did an install of zimbra 6.0.6 on Ubuntu 8.0.4 and everything worked out well except the "unable to verify the mx record". Bypassing this, the install worked perfectly until I did a "zmcontrol status" (see below). I also have bind9 working on the server as normal, resolving the A and MX records to my local LAN IP and tested from a PC.
zimbra@mail:~$ zmcontrol status
mysql.server is not running.
Can anyone help troubleshoot?