Solution in MVC
Create Model Class
public class Email
{
public string Name { get; set; }
}
Create Method
public ActionResult Index()
{
return View();
}
Index view
@model Email_Valu_MVC.Models.Email
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
</head>
<body>
<div>
@using (Html.BeginForm())
{
@Html.Label("Enter Email ID")
@Html.TextBoxFor(m=>m.Name)
<input type="submit" value="Check" />
}
</div>
</body>
</html>
Post Method
[HttpPost]
public ActionResult Index(Email e)
{
TcpClient tClient = new TcpClient("gmail-smtp-in.l.google.com", 25);
string CRLF = "\r\n";
byte[] dataBuffer;
string ResponseString;
NetworkStream netStream = tClient.GetStream();
StreamReader reader = new StreamReader(netStream);
ResponseString = reader.ReadLine();
dataBuffer = BytesFromString("HELO " + CRLF);
netStream.Write(dataBuffer, 0, dataBuffer.Length);
ResponseString = reader.ReadLine();
dataBuffer = BytesFromString("MAIL FROM:<yourgmailidhere@gmail.com>" + CRLF);
netStream.Write(dataBuffer, 0, dataBuffer.Length);
ResponseString = reader.ReadLine();
dataBuffer = BytesFromString("RCPT TO:<" + e.Name.ToString().Trim() + ">" + CRLF);
netStream.Write(dataBuffer, 0, dataBuffer.Length);
ResponseString = reader.ReadLine();
if (GetResponseCode(ResponseString) == 550)
{
Response.Write("Mai Address Does not Exist !<br /><br />");
Response.Write("<font color="red">Original Error from Smtp Server :</font>" + ResponseString);
}
Response.Write("Email Id Existing !");
dataBuffer = BytesFromString("QUITE" + CRLF);
netStream.Write(dataBuffer, 0, dataBuffer.Length);
tClient.Close();
return View();
}
private byte[] BytesFromString(string str)
{
return Encoding.ASCII.GetBytes(str);
}
private int GetResponseCode(string ResponseString)
{
return int.Parse(ResponseString.Substring(0, 3));
}
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