I am trying to run CalDav Test against Zimbra.

PUT /calendars/__uids__/user01/calendar/1.ics HTTP/1.1
Host: localhost:8080
Accept-Encoding: identity
Content-Length: 621
Content-Type: text/calendar; charset=utf-8
Authorization: Basic dXNlcjAxOnVzZXIwMQ==

BEGIN:VCALENDAR
CALSCALE:GREGORIAN
PRODID:-//Example Inc.//Example Calendar//EN
VERSION:2.0
BEGIN:VTIMEZONE
LAST-MODIFIED:20040110T032845Z
TZID:US/Eastern
BEGINAYLIGHT
DTSTART:20000404T020000
RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=4
TZNAME:EDT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
ENDAYLIGHT
BEGIN:STANDARD
DTSTART:20001026T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:EST
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20051222T205953Z
DTSTART;TZID=US/Eastern:20060101T100000
DURATION:PT1H
SUMMARY:event 1
UID:54E181BC7CCC373042B28842@ninevah.local
END:VEVENT
END:VCALENDAR

HTTP/1.1 405 HTTP method PUT is not supported by this URL
Date: Mon, 08 Feb 2010 08:03:11 GMT
Content-Length: 0

Is there any way to enable PUT in zimbra ?