使用专用服务器时无法发送电子邮件

Question

我收到此错误，

Send Email Failed.Mailbox unavailable. The server response was: 5.7.1 
Unable to relay for myEmail@itaxsmart.com 

在此之前，我一直在使用Godeady来存储数据库并发布site.this代码，在此之前，现在我已经在Dedicated server上传输并发布了Database和站点，并且无法从服务器的IP错误重播。

Answer 1

注意： system.net.mail命名空间用于通过电子邮件发送。

 protected void btnsubmit_Click(object sender, ImageClickEventArgs e)
    {
 //Code for send Email
            MailMessage sendMailforSA = new MailMessage();
            SmtpClient smtpforSA = new SmtpClient();
            string subjectforSA = null;
            subjectforSA = "Thanks for apply";
            System.Net.NetworkCredential credforSA = new System.Net.NetworkCredential("Superman@gmail.com", "password");
            sendMailforSA.To.Add(txtemailid.Value);
            MailAddress cc = new MailAddress("info@superman.com");
            sendMailforSA.CC.Add(cc);

 // sendMailforSA.CC("abcxxx@gmail.com");

     sendMailforSA.From = new MailAddress("Rajnikant@gmail.com");
            sendMailforSA.Subject = subjectforSA.ToString();
            sendMailforSA.Body =" Thank you.... your message you can use html tag for style effect";
            sendMailforSA.IsBodyHtml = true;
            smtpforSA.Host = "smtp.gmail.com";
            smtpforSA.Port = 25;
            smtpforSA.EnableSsl = false;
            smtpforSA.UseDefaultCredentials = false;
            smtpforSA.Credentials = credforSA;
            smtpforSA.Send(sendMailforSA);

}

http://satindersinght.blogspot.in/2012/01/how-to-send-email-in-asp.html

Answer 2

复制以下代码..其适用于我的Gmail帐户

在web.config中

<mailSettings>
  <smtp from="youremail@gmail.com">
    <network host="smtp.gmail.com" port="587" userName="youremail" password="xx" defaultCredentials="false"/>

  </smtp>
</mailSettings>

在后面的代码中（单击按钮）

Dim smtp As New System.Net.Mail.SmtpClient()
Dim smail As New System.Net.Mail.MailMessage
smail.To.Add(New System.Net.Mail.MailAddress("emailtowhomyouwanttosend@yahoo.com "))
smail.From = New System.Net.Mail.MailAddress("youremail@gmail.com", "Visit me")
smail.Subject = "hiii"
smail.IsBodyHtml = "true"
smail.Body = "HELLO THERE"
smtp.EnableSsl = True
smtp.Send(smail)

它肯定会工作..