I'm testing the open source version of Zimbra on an Ubuntu 8.04 system. What I need to know right now is:
Can the web client be used as a frontend for other mail systems, e.g. like Squirrelmail can be used against any IMAP server? We're currently running Kerio Connect as our mail server, but I'd like to show people how Zimbra looks without switching everything at once. Also, the Kerio web client has some specific limitations with respect to calendar functions that I think the Zimbra web client deals with better.