We have setup a multi-server installation (ldap, 2x mta, imap-proxy, storage each on one server) of Zimbra Network Edition and its really doing a good job.

But we have also scenarios where we do not need features of the network edition, say just for basic emailing.

Is it possibly to do a "mixed" setup having one zimbra server with network edition and another with the opensource edition integrated with the same ldap/mta/proxy servers?

Another question on this topic is, if there is a chance to proxy the UI between both network and opensource edition.

Best regards, thanks in advance,