楼上的理解错了 楼主的意思是服务器SMTP发送的时候使用SSL 这和WEB程序没有关系

        public void ProcessRequest(HttpContext context)
        {
            string address = context.Request.QueryString["address"];
            string subject = context.Request.QueryString["subject"];
            string body = context.Request.QueryString["body"];

            SmtpClient client = new SmtpClient("smtp.sina.com");
            client.Port = 25;

            client.Credentials = new NetworkCredential("username@sina.com",
"password");

            MailAddress from = new MailAddress("username@sina.com");
            MailAddress to = new MailAddress(address);

            MailMessage message = new MailMessage(from, to);

            message.Body = body;
            //message.BodyEncoding = System.Text.Encoding.UTF8;

            message.Subject = subject;
            //message.SubjectEncoding = System.Text.Encoding.UTF8;

            client.Send(message);
            message.Dispose();

            context.Response.ContentType = "text/html";
            context.Response.Write("Message sent!");
        }
--
修改:sanfei FROM 183.14.16.*
FROM 113.116.77.*
附件(23.7KB) phpmailer.rar