Do I need to install a special version of Apache, qMail, proftpd, etc?
InterWorx-CP will install it’s own versions of these software packages during the install process. If other versions are installed they will (probably) cause errors in the install script and you will be asked to remove them, for that reason it is best to remove any versions of apache (or another web server), or any MTA, MDA, or FTP servers, before beginning the install.
InterWorx Control Panel will install its own versions of these software packages during the install process. If other versions are installed they will (probably) cause errors in the install script and you will be asked to remove them, for that reason it is best to remove any versions of apache (or another web server), or any MTA, MDA, or FTP servers, before beginning the install.