Storing the data in a mysql database

Cooperate with roundcube to get more complex PIM solution. They created fine mailwebclient and I think they are considering implementing calendar also.

This is a must in production environment : people must be able to synchronize their calendars with their mobile equipment.
After a quick search on the Web, it looks like it does not exist at all yet in the Free world !

The scheduling extensions for CalDAV need to be supported. Really.

The current LDAP support is very limited and should be extended massively:
- synchronisation only of users, not disabling groups etc.
- cyclic autmatic synchronization without user invasion (or direct access to LDAP without local storage)
- support for multiple LDAPs (failover)
- support for LDAP groups
- distinguish between Unix Usernames (case sensitive) and Windows usernames (case insensitive)

Would really be very nice, if that could be done!

it would be nice if there is a admin function, which exports a user's calendar into an ics file, maybe on a daily basis (cron) for backup. Reason: the complete backup via pg_dump is nice but when someone has broken his calendar (why ever) it's difficult to restore only this calendar.

I'm not sure if it is possible, but you would get more cliants with activesync protocol for example using http://z-push.sourceforge.net/soswp/ .

I know syncml is considered, but as there is no working implementation...

PostGreSQL schema support is a management feature that would allow me to have my mail user DB parallel to the Davical DB and have joins against the mail db for user authentication.

for shared calendars

Instead of just set the setting to "on" or "off" for the whole domain it would be a blast to switch it on a calendar-basis.

This way task for group-calendars (a company or team) would be accessable for all but the private tasks in their other calendars would stay private.

any way to export the carddav contacts easily?

would be greate being able to look at it beforehand

Just recently I started to use DAViCal in iCal 4.0.4, and it would be great if I could also use the free/busy scheduling, and sending/receiving of event invitations! iCal is a quite popular application so probably I am not the only one with the same wish.
Keep up with the great work.
Cheers,
Filip

I do not want to expose the Web administration interface to the public Internet. Nor my users, actually. They do not need to and some might even mistake it for a Web groupware login.

I have a Mac at work with Entourage that talks to Exchange server, but I hate Entourage and choose to use Mail/iCal instead. I've written a PHP script that runs on my localhost that can pull calendar events from Exchange over WebDAV and generate a subscribable webcal calendar for iCal. It would be even better if there were a way to enable read-write access to Exchange through iCal via a CalDAV-to-WebDAV translator. Essentially, it would be using Exchange as a data store instead of PostgreSQL.