I'd like to have my own calendar server. Perhaps (not needed) with an additional email client and contacts.
Furthermore I am provided with a calendar by my university. A link is provided which leads to a frequently updated ical file. the file is online.
On my android phone I installed icalsync - it works flawlessly.
Now I'd like to have my own calendar server.
I already tried owncloud but I cannot import ical files that are online. only offline ical, but as stated above the file is updated regularely.
I further installed citadel but I cannot find anything about importing ical.
Do you have more suggestions for programs that fit my needs?