I have a client who experiences the following.

A web interface user creates an appointment and sends an invitation out to a non-Zimbra address. When the reply comes back, it has an .ics attachment that is not being processed by the web interface.

If another user using Outlook with the Connector does the same thing, the reply is processed correctly and the calendar gets updated. Is this a limitation or is there something going on with the server?

The server is 5.0.15 NE.