Tnx Xeon for yuor answer. The point is: data leak prevention
A user can install ZD on his personal PC (at home, so I have no controll), download a local copy of all data (mail, cal, docs etc..).
For company policy users can access to Zimbra only using the webmail, I can disable all protocols but they can use ZD and with the 7.0 version can also make a local backup! In a data protection logic it's a big hole ... |