请各位高手指教
有谁能告诉我下面的出错信息是什么引起 的因该怎么修改程序。
The message was undeliverable. All servers failed to receive the message ClientLogging enabled: Client Remote Address: 61.174.148.51 .execute() { Trying server mail:startech.com.cn:25 startech.com.cn:25 failed with the message: "WSAGetLastError() returned 10061, Connection refused" No socket for server. ConnectToServer() 1 of 1 servers failed }
我用的是jmail