Hi all - rookie question - we're an Exchange shop and are looking at Zimbra to solve some of the more typical issues running Exchange - doesn't support true multi-tenancy (single instance with multiple separate tenants), ties us to Active Directory where we'd prefer to use an open LDAP for authentication, cost to own/operate (more expensive physical infra, licensing and support), and inability to integrate tenants for free/busy and other platform components sharing while honoring separation of data and duties.
I read that Zimbra supports true multi-tenancy but can't seem to find real specific use cases on how it actually works. Let's just say I'm a multi-national and each business unit must remain separate (which is why I have multiple Exchange Orgs today) - regulatory constraints mandate I maintain separation of data (mail databases) and duties (administrative control over each tenant). I'd like to setup a single instance in my central data center that all business units use, but the tenant data bases remain co-resident in the tenant countries. Does Zimbra support this? I'm not yet sure how routing would work - not sure I could have a central-based MTA architecture or whether each country would require their own MTAs.
Anyone else doing this? Does Zimbra support this type of implementation? I'm assuming a multi-server solution, but essentially want to glue them all together into a single organization.
Thanks all in advance - pretty excited to be looking at Zimbra to solve my Exchange issues!