$cfg->setConfigEntry('image_cmd_code_captcha_resolver_class', 'ImageCommandResolver');
// CFG: MAILER-CLASS
-$cfg->setConfigEntry('mailer_class', 'DebugMailer');
+$cfg->setConfigEntry('mailer_class', 'CoreFramework\Mailer\Debug\DebugMailer');
// CFG: XML-PARSER-CLASS
$cfg->setConfigEntry('xml_parser_class', 'CoreFramework\Parser\Xml\XmlParser');