I've seen some interesting things about Zimbra about the web, and if some of them are true it sounds like a good product for our firm. Trouble is I can't work out from this site what I need to know. Would be very helpful if someone who has worked it out could help me out...
Here are my questions I've not been able to answer
a) We are a Mac / OS X based firm, and so keen to have a solution that allows us to do mail / shared calendars etc. using Apple's basic apps (Mail, iCal, Address Book). It seems from what I see here that using Mail is OK, but iCal support is less clearly explained, and AB doesn't seem to be mentioned. Also, baffled by which version of Zimbra I'd have to use to get whatever support is provided. What would be very handy would be a concisely worded page on web site setting out how Mac clients are supported by Zimbra (if at all). Anyhow - what support is there, and what version do I need to use to get this functionality? A key reason for this is to support onward use of iSync to reach various hand-held devices / .Mac etc.
b) Our current mail server (CommunigatePro) is running on a Windows2K server - would this be a viable platform for Zimbra? The 'download network version' button implies that this only runs on Redhat Linux, but elsewhere the OpenSource version appears to run on lots of platforms.
c) How easy (or hard) would it be to migrate from Communigate to Zimbra? We use a mixture of mbox and mdir accounts on our current set up, and exclusively access mail via IMAP.
d) We are a small firm: $1450 is a *lot* of money for us compared to other solutions. We would much prefer to use the Open Source version and contribute a more reasonable amount to some part of Zimbra (or buy service support or such like) - but not sure how workable this is. Sounds like the Open Source version is just a crippled version of network version (presumably done for PR purposes?). How realistic would it be for us to consider using the Open Source version to do what we want with OS X clients?
Thanks in advance for your help.