The one of weakness on zimbra FOSS edition is there’s no backup feature. Backup feature is only available for Zimbra Network Edition.
I’ve made a bash script to do a zimbra live backup for FOSS Edition. This script has been made based on this reference and this one
There are no rsync and ssh in this script, but I think we can modifying and merging this script with other scripts from the wiki page.
The goal is to do a remotely synchronization using rsync, ssh and “live” backup for zimbra open source edition.