Hello! I'm trying to configure DCS on openSUSE 10.3 for a mixed Linux/MacOS environment using XML file authentication. There is few information available about DCS / Lightning interoperability. It seems Lightning does not processing scheduling requests in the scheduling inbox on the server, and does not send invitations through DCS either. Was someone sucessful in getting that working, or is that not yet supported in Lighning? I got the iMIP scheduling in DCS only partially working: Known users are asked internally (for iCal, see above), and external users get an invitation email. Problems arise when DCS tries interpreting and injecting email replies. I use the builtin mail templates and have enabled plus-addressing on the mail server. I've added an entry to the XML file for the com.apple.calendarserver and the respective GUID to the »principals with "DAV:all" access«. Depending on the client (both most recent version) I use to create the reply email I get the following errors: Reply created by iCal and sent through Mail: 2009-04-19 10:45:32+0200 [-] [caldav-8081] File "/srv/ CalendarServer/vdisk/CalendarServer/twistedcaldav/scheduling/ processing.py", line 144, in doImplicitOrganizer 2009-04-19 10:45:32+0200 [-] [caldav-8081] result = (yield self.doImplicitOrganizerUpdate()) 2009-04-19 10:45:32+0200 [-] [caldav-8081] exceptions.AssertionError: There must be one and only one ATTENDEE property in a REPLY Reply created by Lightning and sent through Thunderbird: 2009-04-19 10:48:33+0200 [-] [caldav-8081] File "/srv/ CalendarServer/vdisk/CalendarServer/twistedcaldav/method/ put_common.py", line 1085, in run 2009-04-19 10:48:33+0200 [-] [caldav-8081] raise err 2009-04-19 10:48:33+0200 [-] [caldav-8081] exceptions.AttributeError: 'DirectoryPrincipalResource' object has no attribute 'calendarUserAddresses' After adding an cuaddr to the calender user entry, I also got errors when trying to schedule an event. 2009-04-19 10:58:58+0200 [-] [caldav-8081] File "/srv/ CalendarServer/vdisk/CalendarServer/twistedcaldav/directory/ directory.py", line 298, in __init__ 2009-04-19 10:58:58+0200 [-] [caldav-8081] assert len(calendarUserAddresses) == 0 2009-04-19 10:58:58+0200 [-] [caldav-8081] exceptions.AssertionError: And for interpreting Lightning/Thunderbird replies the error changes to: 2009-04-19 11:06:13+0200 [-] [caldav-8081] File "/srv/ CalendarServer/vdisk/CalendarServer/twistedcaldav/mail.py", line 259, in http_POST 2009-04-19 11:06:13+0200 [-] [caldav-8081] yield self.authorize(request, (caldavxml.ScheduleDeliver(),)) 2009-04-19 11:06:13+0200 [-] [caldav-8081] exceptions.AssertionError: Best regards, Markus