EWS连接Exchange2007无法模拟用户

错误提示：由于权限不足，与应用程序连接的服务器无法模拟所请求的用户


这行出错： service.ImpersonatedUserId ....

ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);
service.Credentials = new WebCredentials("administrator", "asdf-123", "ex.asdf.cn");
service.Url = new Uri("https://asdf-exchange.ex.asdf.cn/ews/exchange.asmx");

service.ImpersonatedUserId = new ImpersonatedUserId(ConnectingIdType.SmtpAddress, "[email protected]");

findResults = service.FindItems(WellKnownFolderName.Contacts, new ItemView(int.MaxValue));

解决方法：

在PowerShell中执行以下命令：

Get-ExchangeServer | where {$_.IsClientAccessServer -eq $TRUE} | ForEach-Object {Add-ADPermission -Identity $_.distinguishedname -User (Get-User -Identity administrator | select-object).identity -extendedRight ms-Exch-EPI-Impersonation}