在ASP中发送电子邮件.净c#

本文关键字:电子邮件 ASP | 更新日期: 2023-09-27 18:08:18

我正在为我的网站的访问者创建一个联系页面,给我发送电子邮件(在c#中)。在尝试时,我得到了一个关于EHLO参数的错误。下面是我的代码:

我得到了错误:

服务器的响应是:语法上无效的EHLO参数。

,请帮助

try
    {
        MailMessage _email = new MailMessage();
        String MessageString = "";
        MessageString = "<br>";
        MessageString += "<b>Message from " + champNom.Value + "</b><br /><br />";
        MessageString += "<br/><br/>";
        MessageString += champMail.Text;
        _email.Subject = "Mail from " + champNom.Value + " (Email adress: " + champEmail.Text + ")";
        _email.From = new System.Net.Mail.MailAddress(System.Configuration.ConfigurationManager.AppSettings["SenderForEmail"].ToString(), "MyName");
        _email.To.Add(new System.Net.Mail.MailAddress(System.Configuration.ConfigurationManager.AppSettings["AdminForEmail"].ToString(), "MyName"));
        if (chkCCMyself.Checked) {
           _email.CC.Add(new System.Net.Mail.MailAddress(champEmail.Text, champNom.Value));
        }
        _email.Body = MessageString;
        _email.IsBodyHtml = true;
        System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient();
        smtp.EnableSsl = false;
        //smtp.UseDefaultCredentials = true;
        //smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
        smtp.Host = System.Configuration.ConfigurationManager.AppSettings["HostForEmail"].ToString();
        smtp.Port = 587;
        smtp.Credentials = new System.Net.NetworkCredential(System.Configuration.ConfigurationManager.AppSettings["SenderForEmail"].ToString(), System.Configuration.ConfigurationManager.AppSettings["SenderPswdForEmail"].ToString());
        smtp.Send(_email);
        Page.RegisterStartupScript("UserMsg", "<script>alert('Mail envoyé avec succès...');if(alert){ window.location='contact.aspx';}</script>");
    }catch(Exception err){
        champMail.Text += Environment.NewLine + err.Message;
    }

Thanks in advance

在ASP中发送电子邮件.净c#

如下所示http://forums.asp.net/t/1622198.aspx?Syntactically+invalid+EHLO+argument+s+emailing

如果您的电子邮件有被拒绝的EHLO或HELO的问题,由语法上无效的参数引起的

1。主机名可能包含下划线(_)。

2。这不是标准的做法,用_作为你的域

3。例如takizo_mail.takizo.com

4。大多数邮件服务器拒绝带有下划线的主机名。

5。

确保服务器名称中只有拉丁字符,并且没有下划线等特殊符号

        MailMessage msg = new MailMessage("from@a.com", "To@y.com");
        msg.Subject = "Intraday";
        msg.Sender = new MailAddress("sender@y.com");
        msg.IsBodyHtml = false; //to preserve line breaks and to avoid the need for <br>s
        msg.Body = "Body";
        SmtpClient client = new SmtpClient("Server");
        client.Send(msg);