I'm trying to follow the CalDAV instructions for iCal on OS X 10.5.x, and getting this error message out of iCal:
I followed these instructions:Request for https://zimbra.server.tld/home/username/Calendar failed.
The server responded with
"HTTP/1.1 501 Method PROPFIND is not defined in RFC 2068 and is not supported by the Servlet API "
CalDAV with Leopard iCal - Zimbra :: Wiki
Yes, I double checked, and the account I'm testing with has the Calendar module enabled (even though it's CoS does not). Any ideas?