Eric,
You post a few interesting issues. The one that immediately concerns me most is installing Zimbra on the same servers that your hosting clients on.
Zimbra has specific installation requirements, and is by far a best-of-breed enterprise level solution for providing email collaboration. Now your looking at packaging that into some type of hosting environment and expecting it to play nicely with cPanel, Ensim, Plesk or which ever control panel you happen to be using.
I can see quite a number of issues cropping up here before you even start to look at provisioning accounts. If the small hosts can afford to install the Zimbra Suite properly, then I would fear the amount of support being requested of Zimbra would suddenly become quite unreasonable for the number of hosts using non-standard configurations.
Regards,
Andrew Duck |