读取Exchange的用户未读邮件数的几种方法

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可以使用ExchangeServiceBinding获取邮件，他相当于outlook, 来获取服务器的未接受的邮件.

至于 “该帐户无权模拟所请求的用户 ” ,是由于在exchange服务器上面没有配置模拟账户.

需要在Exchange Management Shell上执行: New-ManagementRoleAssignment –Name:impersonationAssignmentName –Role:ApplicationImpersonation –User:administrator

见: Configuring Exchange Impersonation:http://msdn.microsoft.com/en-us/library/bb204095.aspx

设置后, 就不会有该帐户无权模拟所请求的用户问题了。

public static int GetUnReadMailCountByUserMailAddress(string UserMailAddress)
{
int unRead = 0;
string url = "https://{0}/ews/exchange.asmx";
url = string.Format(url, m_ExchangeMachine);
try
{
ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010_SP1);
service.Credentials = new NetworkCredential(m_ServerUser, m_Password, m_Domain);
service.Url = new Uri(url);
service.ImpersonatedUserId = new ImpersonatedUserId(ConnectingIdType.SmtpAddress, UserMailAddress);
unRead = Folder.Bind(service,WellKnownFolderName.Inbox).UnreadCount;

}
catch (Exception ex)
{
return unRead;
throw;
}
return unRead;
}