Zimbra ZCS-7.1.1 + Ubuntu 10.04LTS problem after changing mount point

Hello,

 I have ZCS 7.1.1 in split DNS config, installed on Ubuntu 10.04 LTS (x64) running in a test environment on VMware Workstation 7.1.
 I had made the default installation (1 scsi disk) with default partitioning structure.
 Tried adding a second scsi disk on vm so i can separate zcs installation (/opt/zimbra) from ubuntu system.

Linux ubuntu-server 2.6.32-28-server #55-Ubuntu SMP Mon Jan 10 23:57:16 UTC 2011 x86_64 GNU/Linux

 Steps i've followed (all actions run by root user):

 1. add new scsi disk on vm.
 2. fdisk /dev/sdb1
 3. mkfs -t ext4 /dev/sdb1
 4. su zimbra -> zmcontrol stop
 5. vi /etc/fstab and enter "/dev/sdb1 /opt ext4 defaults 0 2"
 6. mv /opt/zimbra /home
 7. reboot
 8. run again the installation of ZCS 7.1.1 and selected clean installation.
 9. reboot
 10. su zimbra -> zmcontrol stop -> exit
 11. mkdir /opt/zimbra
 12. cp -Rp /home/zimbra /opt/zimbra
 13. chown -R zimbra:zimbra /opt/zimbra
 14. /opt/zimbra/libexec/zmfixperms
 15. su zimbra -> zmcontrol start

zimbra@ubuntu-server:/home/acid$ zmcontrol -v
 Release 7.1.1_GA_3196.UBUNTU10_64 UBUNTU10_64 FOSS edition.

zimbra@ubuntu-server:/home/acid$ zmcontrol status
 Host ubuntu-server.localdomain
 antispam Running
 antivirus Running
 ldap Running
 logger Running
 mailbox Running
 mta Stopped
 postfix is not running
 snmp Running
 spell Running
 stats Running
 zmconfigd Stopped
 zmconfigd is not running.

/opt/zimbra/log/zmconfigd.log:
http://pastebin.com/SBTp8E8K

 I can access both webmail (with all mails & accounts) and admin console.
 When i try to send a new message i get an error that zimbra cannot communicate with MTA:

http://pastebin.com/3wdmXQ3D

 Any thoughts?

 Thank you