We are evaluating Zimbra (along with several other products) as a replacement for Meeting Maker. While we are looking chiefly at the Calendar aspects Zimbra has to offer, one can not deny the attractiveness of having "everything" in one place: email, addresses, and calendar. We have never been nor are we ever likely to be a location that runs Outlook/Exchange.
I have downloaded and successfully installed the Open Source version of Zimbra. I quickly discovered how to have accounts authenticate against our campus LDAP server. And the calendar features seem to have everything we are looking for.
However, we are NOT looking to abandon either our existing LDAP server or our existing MTA (qmail) infrastructure, both of which have been highly customized. Thus, if we went with Zimbra we would want Zimbra to use the existing LDAP directory and MTA infrastructures.
Is this even possible? Can Zimbra be configured to "point" to another directory and to reference an already-existing IMAP serer and NOT retain its own data store?