When using the soap server in a large multifunctional application and an Exception occurs that is not found in registered Exception types It throw a rather unhelpful "Unknown Error".

I have had to edit the Fault method in Zend_Soap_Server. to allow the passing of non registered exceptions.

My patch is quick and dirty but it may be worth adding an option flag that can be set to allow the use of unregistered Exceptions.

method now reads as

    public function fault($fault = null, $code = "Receiver")
    {
        if ($fault instanceof Exception) {
            $class = get_class($fault);
            if (in_array($class, $this->_faultExceptions)) {
                $message = $fault->getMessage();
                $eCode   = $fault->getCode();
                $code    = empty($eCode) ? $code : $eCode;
            } else {
                $eCode   = $fault->getCode();
                $code    = empty($eCode) ? $code : $eCode;
                $message = 'Unregistered Exception: "'.$class.'" '.$fault->getMessage();
            }
        } elseif(is_string($fault)) {
            $message = $fault;
        } else {
            $message = 'Unknown error';
        }

        $allowedFaultModes = array(
            'VersionMismatch', 'MustUnderstand', 'DataEncodingUnknown',
            'Sender', 'Receiver', 'Server'
        );
        if(!in_array($code, $allowedFaultModes)) {
            $code = "Receiver";
        }

        return new SoapFault($code, $message);
    }