I'm trying to send a mail via the exchange web service. I looked into the msdn and find some help. Every time I try to run this code i'm getting the above error :( I try read almost everywhere...
ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010);
service.Credentials = new WebCredentials("My user name", "my pass");
System.Net.ServicePointManager.ServerCertificateValidationCallback =
((sender, certificate, chain, sslPolicyErrors) => true);
service.Url = new Uri("my web service url.WSDL");
EmailMessage appointment = new EmailMessage(service);
appointment.Subject = "Test by me";
appointment.Body = "DateTime.Now";
appointment.ToRecipients.Add("xxxxxxx@gmail.com");
appointment.SendAnd
SaveCopy();