使用.net PUT到IBM MQ队列不再发送消息

Question

在c＃中，PUT不再发送消息，但try catch不会抛出错误。我在客户端上找不到跟踪或错误日志。请告诉我在哪里可以找到变化的线索。

客户端位于Windows 2012服务器上，MQ位于大型机上。

// in class constuctor
        try
        {
        _queueManager = new MQQueueManager(queueManagerName, channelName, connectionName);
        _requestQueue = _queueManager.AccessQueue(queueName, MQC.MQOO_OUTPUT | MQC.MQOO_FAIL_IF_QUIESCING); //added  | MQC.MQOO_INQUIRE 
        }
        catch (MQException MQexp)
        {

            Console.WriteLine("Error:" + MQexp.Message);
            Console.Read();
        }
    public string Queue_PutTestMsgs(string message)
    {
        MQMessage queueMessage = new MQMessage();
        MQPutMessageOptions queuePutMessageOptions = new MQPutMessageOptions();
        try
        {


        queueMessage.Format = MQC.MQFMT_STRING;
        queueMessage.MessageType = MQC.MQMT_REQUEST;
        queueMessage.ReplyToQueueManagerName = _responseQueueManagerName;//added
        queueMessage.ReplyToQueueName = _responseQueueName;

        queueMessage.WriteString(message);
        _requestQueue.Put(queueMessage, queuePutMessageOptions);
        }
        catch (MQException MQexp)
        {
            Console.WriteLine("Error:" + MQexp.Message);
            Console.Read();
        }
        return message;
    }