[CalendarServer-users] ical invite mail not being sent on mac 10.5.7.

Hi all, i tried to run the latest calendarserver from svn (4805). i could successfully create event in mac ical 10.5.7 but when i added a attendee in calendar entries , the invite mail is not being sent. When i add attendees to entry in local ical calendar then the invite mail is being sent. is this a bug or i need to do some settings in ical /mail ? i have the following configurations me( entry in addressbook) : work email - abc@gmail.com mail imap : abc@gmail.com calendarserver user's email address: abc@gmail.com