无法连接到WCF的异常

非常抱歉,引发CPC后台系统异常,内容如下:
SDP处理节点返回异常。
LogCorrelationId0431f5f2-6f58-48b1-98ce-a06e79592a70,0
LCZZ-SDP,ErrorCode: 500042CPC.Communication.ExceptionHandler.CommunicationException: 处理节点返回异常。（节点名为'SendStage'） ---> ErrorCode: 500037CPC.Communication.ExceptionHandler.CommunicationException: 回调队列处理对象处理消息时发生错误。（队列名为'CCOSQueue'） ---> System.ServiceModel.EndpointNotFoundException: Could not connect to net.tcp://spdbhdq-bwsdpclu01.spdbbiz.com:22120/wf/service. The connection attempt lasted for a time span of 00:00:00.9530945. TCP error code 10061: 由于目标机器积极拒绝，无法连接。 10.112.15.52:22120.  ---> System.Net.Sockets.SocketException: 由于目标机器积极拒绝，无法连接。 10.112.15.52:22120
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   --- End of inner exception stack trace ---

Server stack trace:
   at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout)
   at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)
   at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open()

Exception rethrown at [0]:
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at System.ServiceModel.ICommunicationObject.Open()
   at CPC.Communication.Channels.BasicWCF.BasicWCFSendChannel.Open() in d:\Project\CPCSystem2.12\NoticeSolution\CPC.Communication.Channels.BasicWCF\WCFSendChannel.cs:line 88
   at CPC.Communication.Sender.SendChannelFactory.GetSendChannel(String channelId, String address) in E:\CPC_System_DEV\SDPSolution\CPC.Communication\Sender\SendChannelFactory.cs:line 255
   at CPC.Communication.Sender.MessageSendHandler.ProcessMessage(ServiceEntity requestMessage) in E:\CPC_System_DEV\SDPSolution\CPC.Communication\Sender\MessageSendHandler.cs:line 81
   at CPC.Communication.QueueProcess.CallbackQueuePoolProcessor.ProcessMessageThread() in E:\CPC_System_DEV\SDPSolution\CPC.Communication\QueueProcess\CallbackQueuePoolProcessor.cs:line 462
   --- End of inner exception stack trace ---
   --- End of inner exception stack trace ---

界面ID:PreScanPageMobileCardRegister
柜员:9504 11013995
IP地址:10.112.52.167
日期:2011-5-26 10:08:23