在本机上测试良好，但是申请到域名后，将网站文件对应放到空间上。前台可以访问，后台登陆页面也可以访问，但是输入账号，密码后提示
Server Error in '/' Application.
由于目标机器积极拒绝，无法连接。
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.Sockets.SocketException: 由于目标机器积极拒绝，无法连接。
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
