Multi site - multi server - multi location
I have 4 different sites containing users.
Lets say sites : A, B , C and D.
I want to have one server per site with all the services so if my link is broken between two sites it stills works.
Is it possible with Zimbra ?
I feel it should be possible for messaging and directory but I am not sure about calendar ...
And if yes ... can user a from A organize a meeting with a user c from C and d from D... can the servers communicates to find freebusy information ... and which protocol is used between servers.
Thanck you for any information
PS : I had a look at the documentation about multi-server but I didn't understand for sure if it means multi-server with different services on each (directory, MTA, etc ...) or different servers with each all the services on.