How can I sync my Webmail calendar to Mozilla Sunbird with CalDAV?
Sunbird supports calendar sync on a per-calendar basis, rather than a per-account basis. In order to sync a calendar, click File > Subscribe to Remote Calendar > Select 'On the Network' > Next > Select 'CalDAV'.
The Calendar URL is http://www.outitgoes.com:firstname.lastname@example.org/calendar/ where email@example.com is your email address.
Click 'Next', then enter the display settings you would like for the calendar in your client. Click 'Next', then 'Finish'