I'm currently evaluating the network edition of zimbra. It is for a small office and will have about 15 mailboxes with moderate volume. I do not feel comfortable running on only one server, I would like some redundancy. All the multiple server documentation and forum posts that deal with this topic are too complex for my needs. Ideally I would like to run a main server and a second server to be the backup ldap, mx and have the ability to take over the mail store from a backup of the main system.
I set up the main system with no difficulties. When I go to add the second I have problems. Openldap does not start on a reboot on the second system, I have to remove the alock file. I also loose the statistics in the admin gui. Are there any pointers to this type of set up? Is it a worth while configuration?