> I'm curious how these are working for you, or what sort of configuration and workflows leads to having #calendars and #addressbooks as top-level shared mailboxes? I've only very recently started learning how our DAV bits work (they have previously been black-boxes for me), and so far have only seen these existing in user accounts. Maybe this is a separate thread though. We used to use public calendars in Exchange (they call them Public Folders) for, among other things, a read-only catalogue of who in the office is on leave on any given day. Some of our branch offices also had shared contact lists for phone numbers likely to be needed by all people at the local site (the local takeaway, the local hardware store, the local clinic...). Exchange public folders are almost an exact analogue to shared-namespace mailboxes in Cyrus. Once I learned the undocumented magic for creating public calendars and address books in Cyrus (@karagian on Github posted it: https://github.com/cyrusimap/cyrus-imapd/issues/2373#issuecomment-415738943) it's worked very well. My Outlook users use the free Caldav Synchronizer plugin (https://caldavsynchronizer.org/) to sync selected address books and calendars to their clients. I have a Perl script that queries our Active Directory server over LDAP to set ACLs on the folders. -- Deborah Pickett System Administrator Polyfoam Australia Pty Ltd ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus