與域外的RequiredAttendees創建約會

Question

我正在使用EWS與多個與會者創建約會。我需要添加本地（在我們的Exchange域）和外部參與者。它適用於本地用戶，但外部用戶未收到邀請，但該電子郵件顯示在Outlook中的約會中。這是在Exchange中的設置還是我做錯了什麼？

當我在Outlook中打開約會時，表示邀請沒有發送。如果我然後點擊在Outlook中發送，則發送邀請。

這是我的代碼：

 ExchangeService _service = new ExchangeService(ExchangeVersion.Exchange2010_SP1); 

    _service.Credentials = new WebCredentials(username, password); 
    _service.UseDefaultCredentials = false; 
    _service.Url = new Uri(exchangeClientConfig.ExchangeServiceUrl); 
    _service.ImpersonatedUserId = new ImpersonatedUserId(ConnectingIdType.SmtpAddress, email); 

    Appointment appointment = new Appointment(_service); 

    appointment.Subject = subject; 
    appointment.Body = new MessageBody(BodyType.Text, text); 
    appointment.Start = dateTimeStart; 
    appointment.End = dateTimeStart.AddHours(durationClock.Hour).AddMinutes(durationClock.Minut); 
    appointment.RequiredAttendees.Add(to); 

    appointment = (Appointment)LoadExtendedProperties(appointment, recnum); 

    appointment.Save(WellKnownFolderName.Calendar, SendInvitationsMode.SendOnlyToAll); 

Answer 1

看來我必須指定一個位置。一旦我這樣做了，邀請也會發送給外部參與者。