C# 发送邮件代码

最近帮朋友做一个用C#发送邮件的功能,之前没有做过,到网上差了一些资料,代码不复杂,就是总是出一些乱七八糟的问题.

还发现一个问题.就是在发送的时候与开发者所处的局域网有关,我刚开始做的时候调试了一个下午,代码很简单,但是发送的时候总是失败,后来想到可能是局域网的某些端口给限制了,然后把我的代码发给我一个朋友帮我调试一下,结果发送成功..郁闷....

代码如下:

        //用rushsky_ws@163.com给157948320@qq.com发送邮件

        protected void Button1_Click(object sender, EventArgs e)
        {
            SendEmail("157948320@qq.com","主题是测试","测试测试");
        }


         public void SendEmail(string mail, string subject, string value)
        {
            MailAddress EmailFrom = new MailAddress("rushsky_ws@163.com");
            MailAddress EmailTo = new MailAddress(mail);

            MailMessage Email = new MailMessage(EmailFrom, EmailTo);
            Email.Priority = MailPriority.Normal;

            Email.Subject = subject;
            Email.Body = value;

            //服务器要根据邮箱的地址来决定
              SmtpClient Client = new SmtpClient("smtp.163.com");
            Client.Credentials = new System.Net.NetworkCredential("rushsky_ws", "***不告诉你***");
            Client.DeliveryMethod = SmtpDeliveryMethod.Network;
            try
            {
                Client.Send(Email);
                Response.Write("发送成功");
            }
            catch (Exception ex)
            {
                Response.Write(ex.Message);
            }
        }