I got it working. I was subscribing to "iCalendar" but when I subscribed to "iCalendar (events)" I was able to view them in my Zimbra calendar.
The distinction is that:
"iCalendar": produces .ics files with vtodo items.
"iCalendar (events)": produces .ics files with vevent items
So, calendar display software needs the later. I.e. it won't show up in your calendar unless you choose "iCalendar (events)". Also, you need to rule out permissions issues and publish or share them with a contact. Another minor point is the RTM produces a "webcal://" protocol to the URL. Change that to "http://" when subscribing to the external calendar in Zimbra. |