one of the main requirements are asking to me in my company, for installing Zimbra, is that administrator users could to tee the mailboxes of the other users.

I tried do it, login as administrator in the administrator console, and then clicking in the ViewMail option. In that moment, I received a messenger showing:
JavaScript error encountered in Method ZaAccountListController.prototype._viewMailListene r,
and the description is:
permission denied to get property UnnamedClass.filename
Is possible doing that?

Thank You very much.