| Author: Hefin Dsouza 20 Sep 2008 | Member Level: Diamond | Rating:  Points: 4 |
One Thing that you can do is to validate the email by an regular expression validator.Then send an email to that email id and verify an verification code.Then validate that code.Which is done by most of the applications.
This is a regular method.
If you tell me what type of application you are developing.
Wether it is an Windows Application or an Web Application.
Regards Hefin Dsouza
Regards Hefin Dsouza
WebMaster, DotNetSpider.com
DotNetSpider MVM
My Communities
http://www.dotnetspider.com/sites/10/-RND-DEVELOPERS.aspx
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DotNet the Hefin Way!
|
| Author: Vidhya 20 Sep 2008 | Member Level: Gold | Rating: Points: 6 |
a three step validation process..
1) syntax validation- which is pretty straight forward
2) DNS validation - I'm able to do this too.
3) mailbox validation - I have read in many forums saying it is IMPOSSIBLE to check whether a particular email id exists. But take a look at this site.
http://www.dimplesoftwares.com/emai...orlivedemo.aspx
When they can do it there has to be some way. I have searched every nook and corner but to no avail.. Any help would be greatly apppreciated
public void ValidateMailBox(string emailAddress)
{
string[] id = emailAddress.Split('@');
string host = id[0];
if (!CheckSmtpServerResponse(sock, SmtpServerResponse.CONNECT_SUCCESS))
{
sock.Close();
bConnectStatus = false;
}
else
{
bConnectStatus = true;
}
SendData(string.Format("HELO {0}\r\n", Dns.GetHostName()));
if (!CheckSmtpServerResponse(sock, SmtpServerResponse.GENERIC_SUCCESS))
{
sock.Close();
bHelloStatus = false;
}
else
{
bHelloStatus = true;
}
SendData(string.Format("MAIL From: {0}\r\n", "test@yahoo.com")); //_SenderEmail));
if (!CheckSmtpServerResponse(sock, SmtpServerResponse.GENERIC_SUCCESS))
{
sock.Close();
bBlackListStatus = false;
}
else
{
bBlackListStatus = true;
}
SendData(string.Format("RCPT TO: {0}\r\n", "test2@gmail.com"));
if (!CheckSmtpServerResponse(sock, SmtpServerResponse.GENERIC_SUCCESS))
{
sock.Close();
bSendStatus = false;
}
else
{
bSendStatus = true;
}
}
public void SendData(string message)
{
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(message);
sock.Send(bytes, 0, bytes.Length, SocketFlags.None);
}
public bool CheckSmtpServerResponse(Socket soc, SmtpServerResponse code)
{
string responseString;
int responseCode;
byte[] bytes = new byte[1024];
while (sock.Available == 0)
{
System.Threading.Thread.Sleep(100);
}
sock.Receive(bytes, 0, sock.Available, SocketFlags.None);
responseString = System.Text.Encoding.ASCII.GetString(bytes);
responseCode = Convert.ToInt32(responseString.Substring(0, 3));
if (responseCode != (int)code)
{
return false;
}
else
{
return true;
}
//return responseCode.Equals(Convert.ToInt32(code));
}
I hope this helps you!
Regards,
Vidhya
|
| Author: Hefin Dsouza 20 Sep 2008 | Member Level: Diamond | Rating: Points: 3 |
According to what Vidhya
This is using Syntax we can validate.
One more thing we can also send a mail to the user and validate it using an Code.
I ll work onit and send you a response as soon as possible.
Regards Hefin Dsouza
Regards Hefin Dsouza
WebMaster, DotNetSpider.com
DotNetSpider MVM
My Communities
http://www.dotnetspider.com/sites/10/-RND-DEVELOPERS.aspx
http://www.dotnetspider.com/sites/409/-MCTS-Preparation-Team.aspx
DotNet the Hefin Way!
|
| Author: Nagamohan kumar P 22 Sep 2008 | Member Level: Gold | Rating: Points: 6 |
For this you can use the web service
rt click on solution explorer and add web reference
copy this link and add
http://www.webservicex.net/ValidateEmail.asmx?wsdl
ASPX Body
-----------
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="Enter Email Address"></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click" Visible="False">Validate</asp:LinkButton><br />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Check Email" /><br />
<asp:Label ID="lblmsg" runat="server" Font-Bold="True" Height="22px" Width="437px"></asp:Label></div>
</form>
</body>
-----------------------------------------
ASPX.CS
------------------------------------------
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using net.webservicex.www;
public partial class TestSms : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
lblmsg.Text = "";
lblmsg.ForeColor = System.Drawing.Color.White;
string emal = TextBox1.Text;
net.webservicex.www.ValidateEmail emil = new net.webservicex.www.ValidateEmail();
bool val = false;
val = emil.IsValidEmail(emal);
if (val == true)
{
lblmsg.Text = " Is Valid Email";
lblmsg.ForeColor = System.Drawing.Color.Green;
}
else if (val == false)
{
lblmsg.Text = " Invalid Email";
lblmsg.ForeColor = System.Drawing.Color.Red;
}
}
}
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