Then can i install only this libraries? Or only what i need?
I have no idea exactly how things work, but I can quote Ludovic from an email sent to me, not via the list:
Samba 4 is used to decode the Exchange protocol. That means you won't have to replace your currently running samba3/ldap environment.
But exactly how to do things: I'm not sure. I guess everything will be released packaged, and we only need to apt-get install sogo-with-outlook or something like that.
MJ -- users@sogo.nu https://inverse.ca/sogo/lists