C#获取Exchange 2007未读邮件问题
现在有一个问题，我在asp.net里使用EWS API 来获取exchange 2007 里的未读邮件，但是总会有一个提示：
The request failed. 远程服务器返回错误: (440) Login Timeout。 
请问这个是否需要在exchange 设置什么啊？因为现在我公司的exchange有2,300人在用，我也不敢随便更改设置。请问有其他的办法么？下面是我的代码[code=C#][/code]实例化exchange类并指定exchange版本
  ExchangeService exSercice = new ExchangeService(ExchangeVersion.Exchange2007_SP1);

  System.Net.ServicePointManager.ServerCertificateValidationCallback = delegate(Object obj, System.Security.Cryptography.X509Certificates.X509Certificate certificate,
  System.Security.Cryptography.X509Certificates.X509Chain chain, System.Net.Security.SslPolicyErrors errors) { return true; };

  //指定exchange登录的地址
  //
  //指定邮箱登录名，密码，域名
  exSercice.Credentials = new WebCredentials("xiangkun", "Aa123123", "MAPLE");

  exSercice.Url = new Uri("http://172.24.1.83/owa/EWS/exchange.asmx");


   
   

  //获取收件箱未读邮件

  //EmailMessage email = new EmailMessage(exSercice,new ItemId(UniqueID);
   
  //FindItemsResults<Item> finResult=exSercice.FindItems(WellKnownFolderName.Inbox,new ItemView(int,MaxValue));

  Folder folder = Folder.Bind(exSercice, WellKnownFolderName.Inbox);


------解决方案--------------------
http://www.independentsoft.com/exchangewebservices/index.html