After changing the hostname and rebooting my server I found out that the domains in my ISPConfig3 were showing the default Apache page instead of their usual content, after hours of messing arround I found out that disabling the vhost default with a2dissite default the others would work normally thus "solving" the problem but replacing the default apache page with the first vhost I have after default. Since I want the default apache page to show up when you access it via IP, I want some help to track what's wrong with my apache config. Thanks in advance.