asp.net邮件发送出错

[jiangtianyin]

protected void SendButton_Click(object sender, EventArgs e)
{
MailMessage mail = new MailMessage();
mail.From =new MailAddress(this.geter.Text); //geter是textBox 的ID号，调试是值为[e-mail]
mail.To.Add(new MailAddress(this.senter.Text)); //senter是textBox 的ID号调试是值为jiangtian_yin@.com

mail.Priority = MailPriority.Normal;
mail.Subject = TalkTitle.Text; //talkTile是textBox 的ID号
mail.Body = TalkBody.Text; //TalkBody是textBox 的ID号
SmtpClient server=new SmtpClient();
server.Host = "ms2.hint.net";
server.Send(mail);
}
两个邮箱都是真实地址，并且每个Textbox都有值，但是发不出去，错误信息如下：
“/Web”应用程序中的服务器错误。
--------------------------------------------------------------------------------

无法从传输连接中读取数据: net_io_connectionclosed。
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.IO.IOException: 无法从传输连接中读取数据: net_io_connectionclosed。

源错误:


行 31: SmtpClient server=new SmtpClient();
行 32: server.Host = "ms2.hint.net";
行 33: server.Send(mail);
行 34: }
行 35:


源文件: e:\C#\ASP.net\MingSheng\Web\E-mail.aspx.cs 行: 33

[果然如此]

看看邮件服务器是否允许用程序发送，163的新注册邮箱不行，
建议用天涯的邮件服务器试试：mail.tianya.cn

[CeShenBeiWang]

给你部分代码你自己看一下，步骤就这几步

MailClass mc = SetMailInfo();
if (mc == null)
{
return;
}
MailMessage send_mail = new MailMessage();
send_mail.From = new MailAddress(mc.SendMailAdrres, mc.SendMailAddresDiscr);//发件地址
send_mail.ReplyTo = new MailAddress(mc.MailBack, mc.MailBackDiscription);//收个地址

SmtpClient smtp = new SmtpClient(mc.SendSmtp);//发件件smtp
smtp.Credentials = new NetworkCredential(mc.SendMailUser, mc.SendMailPwd);//发件帐号、密码认证

send_mail.Subject = mc.SubjectStr;//标题
string contentTxt = this.Txt_Content.Text.Trim();//正文
send_mail.SubjectEncoding = Encoding.GetEncoding(mc.Endcode);
send_mail.BodyEncoding = Encoding.GetEncoding(mc.Endcode);

//html或文本
send_mail.IsBodyHtml = mc.TxtOrHtml;
//优先级
switch (mc.Priority)
{
case 0:
send_mail.Priority = MailPriority.Normal;
break;
case 1:
send_mail.Priority = MailPriority.High;
break;
case 2:
send_mail.Priority = MailPriority.Low;
break;
}

[zangshulai]

#region  发送邮件
    /// <summary>
    /// 利用Jmail发送邮件 如果出现失败肯能是防火墙的设置或邮箱服务器错误
    /// </summary>
    /// <param name="tomail">收件人邮箱 如果是过个收件人以；分割</param>
    /// <param name="Title">邮件的主题</param>
    /// <param name="Content">邮件内容</param>
    public static void SendMail(string tomail, string Title, string Content)
    {
        try
        {
            jmail.Message Jmail = new jmail.Message();

            //Silent属性：如果设置为true,JMail不会抛出例外错误. JMail. Send( () 会根据操作结果返回true或false
            //Jmail.Silent=true;
            //Jmail创建的日志，前提loging属性设置为true
            //Jmail.Logging=true;
            //字符集，缺省为"US-ASCII"
            Jmail.Charset = "GB2312";
            Jmail.Encoding = "GB2312";
            //信件的contentype. 缺省是"text/plain"） : 字符串如果你以HTML格式发送邮件, 改为"text/html"即可。
            Jmail.ISOEncodeHeaders = false;//是否将信头编码成iso-8859-1字符集
            Jmail.ContentType = "text/html";
            Jmail.Priority = Convert.ToByte(1);// 优先级
            //添加收件人
            string SendEmail = tomail;
            string fromName = System.Configuration.ConfigurationManager.AppSettings["SendRealName"].ToString();//邮件来自
            //多个邮件接受人
            if (SendEmail.IndexOf(';') > 0)
            {
                string[] emailArr = SendEmail.Split(';');
                foreach (string email in emailArr)
                {
                    if (email != null && !email.Trim().Equals(""))
                    {
                        Jmail.AddRecipient(email, "", "");
                    }
                }
            }
            else
            {
                Jmail.AddRecipient(SendEmail, "", "");
            }
            //邮件来自
            Jmail.FromName = fromName;
            //发件人邮箱
            Jmail.From = System.Configuration.ConfigurationManager.AppSettings["SendUserName"];
            //发件人邮件用户名
            Jmail.MailServerUserName = System.Configuration.ConfigurationManager.AppSettings["SendUserName"];
            //发件人邮件密码
            Jmail.MailServerPassWord = System.Configuration.ConfigurationManager.AppSettings["SendPassword"];
            //设置邮件标题
            Jmail.Subject = Title;
            //邮件内容
            Jmail.Body = Content;
            //Jmail发送的方法
            Jmail.Send(System.Configuration.ConfigurationManager.AppSettings["MailServer"], false);
            Jmail.Close();

            HttpContext.Current.Response.Write("<script>alert('邮件发送成功');</script>");

        }
        catch
        {
            HttpContext.Current.Response.Write("<script>alert('邮件发送失败,请检查');</script>");
        }
    }
    /// <summary>
    /// 利用Jmail发送邮件
    /// </summary>
    /// <param name="SendEmail">收件人邮箱 如果是过个收件人以；分割</param>
    /// <param name="Title">邮件的主题</param>
    /// <param name="Content">邮件内容</param>
    /// <param name="Attach">邮件中的附件以；分割</param>
    public static void SendMailWithAttach(string SendEmail, string Title, string Content, string Attach)
    {
        try
        {
            jmail.Message Jmail = new jmail.Message();

            //Silent属性：如果设置为true,JMail不会抛出例外错误. JMail. Send( () 会根据操作结果返回true或false
            //Jmail.Silent=true;
            //Jmail创建的日志，前提loging属性设置为true
            //Jmail.Logging=true;
            //字符集，缺省为"US-ASCII"
            Jmail.Charset = "GB2312";
            //信件的contentype. 缺省是"text/plain"） : 字符串如果你以HTML格式发送邮件, 改为"text/html"即可。
            //Jmail.ContentType="text/html";
            //添加收件人
            //多个邮件接受人
            if (SendEmail.IndexOf(';') > 0)
            {
                string[] emailArr = SendEmail.Split(';');
                foreach (string email in emailArr)
                {
                    if (email != null && !email.Trim().Equals(""))
                    {
                        Jmail.AddRecipient(email, "", "");
                    }
                }
            }
            else
            {
                Jmail.AddRecipient(SendEmail, "", "");
            }
            string fromName = System.Configuration.ConfigurationManager.AppSettings["SendRealName"].ToString();
            //邮件来自
            Jmail.FromName = fromName;
            Jmail.From = System.Configuration.ConfigurationManager.AppSettings["SendUserName"];
            //发件人邮件用户名
            Jmail.MailServerUserName = System.Configuration.ConfigurationManager.AppSettings["SendUserName"];
            //发件人邮件密码
            Jmail.MailServerPassWord = System.Configuration.ConfigurationManager.AppSettings["SendPassword"];
            //设置邮件标题
            Jmail.Subject = Title;
            //邮件添加附件,(多附件的话，可以再加一条Jmail.AddAttachment( "c:\\test.jpg",true,null);)就可以搞定了。［注］：加了附件，讲把上面的Jmail.ContentType="text/html";删掉。否则会在邮件里出现乱码。
            //Jmail.AddAttachment( "c:\\test.jpg",true,null);
            string[] Attachs = Attach.Split(';');
            for (int i = 0; i < Attachs.Length; i++)
            {
                if (Attachs[i] != "")
                {
                    Jmail.AddAttachment(Attachs[i], true, null);
                }
            }
            //邮件内容
            Jmail.Body = Content;
            //Jmail发送的方法
            Jmail.Send(System.Configuration.ConfigurationManager.AppSettings["MailServer"], false);
            Jmail.Close();
            HttpContext.Current.Response.Write("<script>alert('邮件发送成功');</script>");

        }
        catch
        {
            HttpContext.Current.Response.Write("<script>alert('邮件发送失败,请检查');</script>");
        }
    }
    #endregion

发送邮件的程序，发件人的邮箱和密码 服务器 都在web.config文件中配置