Exchange Web 服务连接失败

Question

我的office 365有在线兑换服务，
我想用不同的方法发送电子邮件到其他人的邮箱

然后我找到了 Exchange Web 服务，所以我尝试做基本的例子：

class Program
{
    static void Main(string[] args)
    {
        //note that there no option for exchange server 2016 (my exchange online use exchange server 2016), so i use the default option  
        ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);   

        service.Credentials = new WebCredentials("user@domain.com", "myPassword");
        service.UseDefaultCredentials = false;

        //for log purpose
        service.TraceEnabled = true; 
        service.TraceFlags = TraceFlags.All;

        service.AutodiscoverUrl("user@domain.com", RedirectionUrlValidationCallback);

        EmailMessage email = new EmailMessage(service);
        email.ToRecipients.Add("user2@domain.com");
        email.Subject = "HelloWorld";
        email.Body = new MessageBody("This is the first email I've sent by using the EWS Managed API.");
        email.Send();

    }

    private static bool RedirectionUrlValidationCallback(string redirectionUrl)
    {
        // The default for the validation callback is to reject the URL.
        bool result = false;

        Uri redirectionUri = new Uri(redirectionUrl);

        // Validate the contents of the redirection URL. In this simple validation
        // callback, the redirection URL is considered valid if it is using HTTPS
        // to encrypt the authentication credentials. 
        if (redirectionUri.Scheme == "https")
        {
            result = true;
        }
        return result;
    }
}

并且在 AutodiscoverUrl 中有异常，像这样：

Microsoft.Exchange.WebServices.Data.ServiceXmlDeserializationException: 'The 
expected XML node type was XmlDeclaration, but the actual type is Element.'

找了一会，说exchange找不到我的域名，我的exchange online设置没问题，我可以发邮件，通过outlook web access添加预约到我邮箱里的其他人

我已经将我的名称服务器更改为
ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com

但还是没有解决我的问题..

有没有我遗漏的设置？
谢谢..

Answer 1

而不是使用

 service.AutodiscoverUrl("user@domain.com", RedirectionUrlValidationCallback);

尝试

 service.Url = new Uri("https://outlook.office365.com/EWS/Exchange.asmx");

我建议你设置

ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);

Office365 的最高枚举而不是最低枚举，除非您尝试支持 Exchange 2007。

Exchange Web 服务连接失败

Exchange web Services failed to connect

exchange-server

office365