there is an smtp exception System.Net.Mail.SmtpException: Failure sending mail. ---> System.Net.WebException: Unable to connect to the remote server
while running this code
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Net.Mail;
public partial class trail : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
MailMessage mail = new MailMessage();
mail.To.Add(TextBox1.Text);
mail.From = new MailAddress(TextBox2.Text);
mail.Subject = TextBox3.Text;
mail.Body = TextBox4.Text;
mail.IsBodyHtml = true;
if (FileUpload1.HasFile)
{
mail.Attachments.Add(new Attachment(FileUpload1.PostedFile.InputStream, FileUpload1.FileName));
}
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.Credentials = new System.Net.NetworkCredential("mymailaddress", "mypass");
smtp.EnableSsl = true;
smtp.Send(mail);
}
catch (Exception ex)
{
Label4.Text = ex.ToString();
}
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="trail.aspx.cs" Inherits="trail" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<table>
<tr>
<td>
<asp:Label ID="Label1" runat="server" Text="From"></asp:Label>
</td>
<td>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label2" runat="server" Text="To"></asp:Label>
</td>
<td>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label3" runat="server" Text="Subject"></asp:Label>
</td>
<td>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label4" runat="server" Text="Message"></asp:Label>
</td>
<td>
<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
</td>
<asp:FileUpload ID="FileUpload1" runat="server" />
</tr>
</table>
<asp:Button ID="Button1" runat="server" Text="Button"
onclick="Button1_Click" />
</form>
</body>
</html>
