Yesterday I did upgrade from 8.0.1 to 8.0.6 Zimbra Ubuntu 12.04 64-bit version, but I had few problems. After upgrade, messages were nor delivered, nor received. With reject message from Postfix.
After problems, I have restored to snapshot, and LIVE server is up and running 8.0.1. But I havecreated a clone for test upgrades.
So, the first thing: when I start ./install.sh, it asks for upgrade, and then - asks again to install zimbra-mta.
MTA _IS_ installed already, and this would be required to upgrade it, not install as fresh service, am I right?
Checking for prerequisites...
Checking for suggested prerequisites...
Prerequisite check complete.
Checking current number of databases...
Do you want to verify message store database integrity? [Y] n
Checking for installable packages
The Zimbra Collaboration Server appears already to be installed.
It can be upgraded with no effect on existing accounts,
or the current installation can be completely removed prior
to installation for a clean install.
Do you wish to upgrade? [Y] y
Select the packages to install
Install zimbra-mta [N]
In fact - I had few problems with 8.0.1 before, where I was forced to restore few folders from backup, but do not remembre, probably postfix also.
It would be the best - to install fresh 8.0.1 on new server, and move message and user store to new server, but I did not found good tutorial for 8th version. Does anyone has materials for that?