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I would like to sync my Thunderbird/Lightning contacts, tasks, and calendars with a Citadel groupware server.

The Citadel server requires the GroupDAV protocol to sync. What do I need to do to make Thunderbird and its Lightning extension use the GroupDAV protocol to sync contacts, tasks, and calendars via GroupDAV? Specific instructions would be appreciated. Thanks!

BTW, I use Mac OS X 10.6.7 and sometimes Linux systems.

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