On 21 Jun 2016, at 14:08, zyrixx <zyrixx@gmx.net> wrote:

Hello, so far I can use with my CALDAVZAP either internal or external with my URL.

If it is to function internally, must in the href my internal URL stand for external use that is only possible in the href with the external URL.

Does this have to do with the topic Cross Domain and then the Apache configuration has to be changed?

Best wishes

Tom