For me, there is another problem: I do have 2 ‘normal’ Websites running with Mamp. A 3rd Xojo-Website (for testing) is running on the same server, but I am probably too stupid to configure Mamp in a way to find the Xojo-Side if I do not include the port in the web address (www.ehkkatest.ch:20001 - works fine, www.ehkkatest.ch doesn’t work). The only thing I know ist, that something similar used to work (some years ago).
The one with the port woks anyway, even without MAMP.