MailMessage smtpClient在發佈後不工作

Question

下面的代碼在使用本地主機進行調試時工作正常，但在我發佈到Web服務器後無法正常工作。

protected void SendMail() 
    { 

     MailMessage mailMessage = new MailMessage(); 
     mailMessage.From = new MailAddress("xxxxxx@gmail.com"); 
     mailMessage.To.Add("xxxxxx@gmail.com"); 
     mailMessage.Subject = ddlSubject.Text; 

     mailMessage.Body = "<b>Sender Title: </b> " + ddlTitle.SelectedItem.Text + "<br/>" 
      + "<b>Sender First Name: </b> " + txtFName.Text + "<br/>" 
      + "<b>Sender Last Name: </b> " + txtLName.Text + "<br/>" 
      + "<b>Sender Email: </b> " + txtEmail.Text + "<br/>" 
      + "<b>Sender Phone: </b> " + txtPhone.Text + "<br/>" 
      + "<b>Sender Address: </b> " + txtAddress.Text + "<br/>" 
      + "<b>Sender Suburb: </b> " + ddlSuburbs.SelectedItem.Text + "<br/>" 
      + "<b>Sender Message: </b> " + contactMessage.InnerText + "<br/>"; 
     mailMessage.IsBodyHtml = true; 

     SmtpClient smtpClient = new SmtpClient("smtp.gmail.com", 587); 
     smtpClient.Credentials = new System.Net.NetworkCredential("xxxxxxx@gmail.com", "xxxxxx"); 
     smtpClient.EnableSsl = true; 
     smtpClient.Send(mailMessage); 

     lblConfirmation.Text = "Thank you " + ddlTitle.SelectedItem.Text + " " + txtFName.Text.ToUpper() + " " + txtLName.Text.ToUpper() + " for contacting us. We will try to get back to you ASAP"; 
    } 

注意的網站使用SSL。

Answer 1

確保端口= 25。

try 
    { 
      MailMessage msg = new MailMessage(); 
      MailAddress fromAdd = new MailAddress("fromemail@email.com"); 
      msg.[To].Add("toemail@email.com"); 
      msg.Subject = "Choose Session Members"; 
      msg.From = fromAdd; 
      msg .IsBodyHtml = true; 
      msg.Priority = MailPriority.Normal; 
      msg .BodyEncoding = Encoding.Default; 
      msg.Body = "<center><table><tr><td><h1>Your Message</h1><br/><br/></td></tr>"; 
      msg.Body = msg.Body + "</table></center>"; 
      SmtpClient smtpClient = new SmtpClient ("smtp.yourserver.com", "25"); 
      smtpClient.EnableSsl = true; 
      smtpClient.UseDefaultCredentials = false; 
      smtpClient.Credentials = new System.Net.NetworkCredential("yourname@yourserver.com", "password"); 
      smtpClient .DeliveryMethod = SmtpDeliveryMethod.Network; 
      smtpClient.Send(msg); 
      smtpClient.Dispose(); 
     } 
    catch (exception ex){ 
     Label1.Text = ex.ToString(); 
    }