I have an embarrassingly trivial question: I have a Zimbra (currently open source) installation which is used only for the calendar service (i.e., Zimbra is not my mail server, and Zimbra is configured to use an SMTP relay). When user A adds user B as an attendee to an appointment, user B receives an email notification. However, when user B logs into the Zimbra web interface, he does not see the event in his calendar. Since the email invitation (delivered to B's mail client -- which is not Zimbra webmail) does not contain any links, and since the event does not show up in his calendar, B has no way of confirming his attendance to the event.
What am I missing? Is it the case that mail (such as invitations) have to be delivered to Zimbra, so that the user can click on the invitation to add/accept it in his calendar? Especially when a connector is not being used? Or is their some simple configuration option that I am missing?