Exchange託管API的自動發現問題

Question

我在C＃中使用Exchange託管API訪問Exchange 2010.我遇到了使用Autodiscoverurl函數的問題。我已經嘗試了許多具有各種不同的錯誤不同的方法：

代碼：

var service = new ExchangeService(ExchangeVersion.Exchange2010); 
service.Autodiscoverurl("email@domain.com", delegate { return true; }); 

錯誤：

The Autodiscover service couldn't be located.

代碼：

var service = new ExchangeService(ExchangeVersion.Exchange2010); 
service.Autodiscoverurl("email@domain.com"); 

錯誤：

Autodiscover blocked a potentially insecure redirection to https:// servername /autodiscover/autodiscover.xml. To allow Autodiscover to follow the redirection, use the AutodiscoverUlr(string, AutodiscoverRedirectionUrlValidationCallback) overload.

代碼：

var service = new ExchangeService(ExchangeVersion.Exchange2010); 
service.Url = new Uri("https://servername/EWS/Exchange.asmx"); 

錯誤：

The request failed. The remote server returned an error: (401) Unauthorized.

我曾嘗試提供憑據的各種方式，所有與上面相同的結果。

service.UseDefaultCredentials = true; 
service.Credentials = CredentialCache.DefaultNetworkCredentials; 
etc. 

任何想法？

Answer 1

據我所知，autodiscover xml需要憑證，如果Basic不起作用，NTLM通常更可靠。