I hav a currently working mail system on ubuntu 6.06 32 bit zimbra 5.20
This system is becoming unstable.
Now I have a Ubuntu 8.04 on kvm that is ready (dns resolving) to become the new mailserver.
My questions are :
1. what are the steps to to this without losing data?
2. There is a problem with a backup file of 16 april 2010. Can I remove this manually?
3. Do I have to copy the entire /opt/zimbra/backup to the new server?