MailMessage message= new MailMessage();
            message.From
="yurix9209@sohu.com";
            message.To
="ServUcn@hotmail.com";
            message.Body
="test";
            message.Subject
="aa";
            message.Cc
="ServUcn@hotmail.com";
            message.Bcc
="ServUcn@hotmail.com";
            message.Fields.Add(
"http://schemas.microsoft.com/cdo/configuration/smtpauthenticate""1");
            
// set your username here
            message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername""UserName");
            
// set your password here
            message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword""UserPassword");
            SmtpMail.SmtpServer
="smtp.sina.com.cn";
            SmtpMail.Send(message);