Hello at all, for a few months I try to configure a debian server. After the initial parts of this server are running well I wanted to install a calendar server. I searched for a tool which offers the caldav protocoll cause I want to synchronize the calendars of my laptop (thunderbird with extension lightning) and the iPhone. So I found your project but I can't get it work - so I hope you can help me understanding, what I do wrong. In principle I followed this tutorial http://wiki.debian.org/HowTo/CalendarServer. I took the default settings and added the new calendar under lightning with this address: http://my_IP_address:8008/calendars/users/admin/calendar (the last "/" was not accepted by thunderbird so I deleted it), protocoll is caldav and the name is simply "calendar". After this I get the ok message and then I added a few new dates,. Now I wanted to add the iPhone at the same way, also took the address as shown above and gave the calendar the same name. The iPhone checked the account and printed no errors but then I open the calendar app then I found only the standard private calendar. For testing I opened the address in my browser - site was found and I could log in. I found a table with a couple of .ics files (for example 558faf35-e549-4425-8485-db5ba5b3bd59.ics). In each file I found one entry . Does anyone know why the iPhone can't connect? Is the output at the website correct? Did I set something wrong or forget some settings? Thank you for help Regards Eric