UNPA_Portal de Autogestion del Empleado-Configurar interaccion entre servicios

Aprovecho este hilo para consultar lo siguiente. Estamos configurando el portal y no podemos hacerlo andar estando en distintos servidores (portal y mapuche). Me aparece el siguiente error en pantalla.

Exception Object ( [message:protected] => Error , NO Response Received [string:Exception:private] => [code:protected] => 1 [file:protected] => /var/www/autogestion/include/cWs.php [line:protected] => 150 [trace:Exception:private] => Array ( [0] => Array ( [file] => /var/www/autogestion/include/cWs.php [line] => 150 [function] => request [class] => WSClient [type] => → [args] => Array ( [0] => WSMessage Object ( [str] => [action] => https://mapuche.uner.edu.ar/servicios.php/getCaptcha ) ) ) [1] => Array ( [file] => /var/www/autogestion/include/cWs.php [line] => 43 [function] => sslRequest [class] => webServiceCliente [type] => → [args] => Array ( [0] => getCaptcha ) ) [2] => Array ( [file] => /var/www/autogestion/index.php [line] => 61 [function] => __construct [class] => webServiceCliente [type] => → [args] => Array ( [0] => Array ( ) [1] => getCaptcha ) ) ) [previous:Exception:private] => )

Pensamos que podia ser el https de mapuche, pero tampoco es eso.
Cual puede ser el inconveniente o donde puedo configurar?

Desde ya gracias