Hi Peter, thanks for the feedback, hopefully your experience of 6.3.x will be better (a lot happened between 5.2 and 6.2!)
- At present the implementation uses the system-mysql database. You can modify this to MySQL if you wish by editing /etc/zarafa/server.cfg and providing the alternative database details.
- I posted some migration steps here from 5.2 to 6.2, which worked well for my own personal server.
- The re-hook process is time consuming if you have large amount of users. The best way would be to migrate users too so that username and UID is maintained. Peter Baldwin was going to look at the 'system config' backup /restore so that users can export the users from ClearOS 5.2 and import into 6.x. That's not available yet, so perhaps worth waiting for?
- Again Zarafa runs from the default web server port 80/443 in the new version - no additional tweaking required. Different from the setup in 5.2 as ClearOS are keen to remain close to the Zarafa default implementation... if there is a lot of demand I can make the case to use the webconfig ports
- The official route is to purchase Zarafa through the Marketplace, and I should point you at the very keenly priced Professional $/user from ClearOS which also comes with official support. Unofficially you could in theory still use your own previous license as the underlying software is the same, but you are left on your own for support. Note this is not tested!
If you need to move your license after testing, I believe Ben has offered on other occasions. Just drop him a PM or raise a support ticket through ClearSDN