正在连接到office 365邮箱

Question

    ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2013_SP1);
    service.UseDefaultCredentials = false;
    //Specify login which works when connecting to Office 365 web UI
    service.Credentials = new WebCredentials("office_365_login@domain", "password");

    //would fail here with 401 unauthorised
    service.AutodiscoverUrl("email_address", RedirectionUrlValidationCallback);

    //As an alternative to autodiscover, I've tried to specify endpoint explicitly
    service.Url = new Uri("https://outlook.office365.com/EWS/Exchange.asmx")

    EmailMessage email = new EmailMessage(service);
    ...//Set email info
    //Would fail with 401 unauthorised
    email.Send();

null

Answer 1

如果您试图使用EWS API连接到Office365邮箱,请查看以下内容：

您现在无法在EWS应用程序中使用基本身份验证（用户名和密码）连接到Office/Microsoft 365。Microsoft不再支持Exchange Online的EWS中的基本身份验证。建议您使用OAUTH2.0获取令牌，并在您的EWS客户端中使用相同的令牌连接到Office365。

这里是GitHub存储库的源代码和文档链接。