The autoinstaller outputs in the beginning: Code: [INFO] Starting perfect server setup for Debian GNU/Linux 10 (buster) [INFO] Enabling contrib and non-free repositories. But contrib and non-free are not added to /etc/apt/sources.list and /etc/apt/sources.list.d/ directory has files for php and rspamd, not for these repos. Maybe this is why autoinstall fails: Code: ./ispc3-ai.sh --no-mailman [INFO] Installing packages apache2, apache2-doc, apache2-utils, libapache2-mod-fcgid, apache2-suexec-pristine, libapache2-mod-php, libapache2-mod-python, libapache2-mod-passenger [ERROR] Exception occured: ISPConfigOSException -> Installing packages failed. (/ispconfig.ai.php:15) And now for something completely different: autoinstaller adds to /etc/resolv.conf the line Code: nameserver 127.0.0.1 which makes host stop using my name servers for this local LAN, and specifically not find my apt cache host. I have DHCP server to give network settings.