Module not working in /sites/all/modules

Hello,

since Drupal 6 it's recommended to install contributed modules in /sites/all/modules. Your module don't work there, because of

require_once 'modules/inxmailprofessional/inxmail_api/Apiimpl/Loader.php';
in inxmailprofessional.module, line 5

My company is a user of inxmail, so feel free to contact me to share informations.

Franzer (digi-info, mannheim)