从服务器smtp发送邮件时出错？

Question

My mail sending code is as follows which has been hosted on the server:

try
    {
        MailMessage msgMail = new MailMessage();

        MailMessage myMessage = new MailMessage();
        myMessage.From = new MailAddress("*****");
        myMessage.To.Add(TextBox1.Text);
        myMessage.Subject = "Subject";
        myMessage.IsBodyHtml = true;

        myMessage.Body = "Message Body";


        SmtpClient mySmtpClient = new SmtpClient();
        System.Net.NetworkCredential myCredential = new System.Net.NetworkCredential("email", "password");
        mySmtpClient.Host = "****";  //Have specified the smtp host name
        mySmtpClient.UseDefaultCredentials = false;
        mySmtpClient.Credentials = myCredential;


        mySmtpClient.Send(myMessage);
        myMessage.Dispose();
    }
    catch (Exception ex)
    {
        Response.Write(ex.ToString());
    }

I keep on getting this error

System.Net.Mail.SmtpFailedRecipientException: Mailbox unavailable. The server response was: #5.1.0 Address rejected abc@yahoo.com at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, SmtpFailedRecipientException& exception) at System.Net.Mail.SmtpClient.Send(MailMessage message) at Mail.Button1_Click(Object sender, EventArgs e) in d:\hosting\9110120\html\FB\Mail.aspx.cs:line 37

I have tried everything.It keeps giving the same error

My site is hosted on Godaddy server

Answer 1

您的代码似乎很好，显然可能是您需要配置它： http ： //support.godaddy.com/help/article/5444

Answer 2

It's failing because the email address doesn't exist. Just handle the exception and you should be all set.

How to check if an email address exists without sending an email?

Answer 3

I had same problem , fixed it by a small change in the line below

System.Net.NetworkCredential myCredential = new System.Net.NetworkCredential("email", "password");

verify your credentials , that worked for me :) ..