We are using a component called remoteimage (Asikart RemoteImage). It will not work in the front end. I have installed it on a site without SecurityCheck and works perfect. Have added it as an exception everywhere. Miss be missing something. Any help would be appreciated.
Is the .htacess protection applied? If so maybe there is a directive preventing the normal behavior. To check it just rename your current .htacess and also rename the htacess.txt to .htacess. This will apply the Joomla standard .htacess.