How to implement Email verification in asp.net

Can you please tell me which site you are developing?

Saratvaddilli, if this helps please login to Mark As Answer. | Alert Moderator

The below Code Snippet Steps will throw an exception, if the domain is not valid, so that you can flag that the email address is invalid.

string[] emailhost = (emailAddress.Split('@'));

string EmailHostName = emailhost [1];



IPHostEntry IPhst = Dns.Resolve(EmailHostName );

IPEndPoint endPt = new IPEndPoint(IPhst.AddressList[0], 25);

Socket s= new Socket(endPt.AddressFamily, 

SocketType.Stream,ProtocolType.Tcp);

s.Connect(endPt);

More Info
http://www.codeproject.com/Articles/5189/Effective-Email-Address-Validation
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Suggestion :

If you want validate all social email id.... you can follow this

1) Email syntax validation.

2)Use the SmtpMail class of ASP.NET application by adding a reference of System.Web.dll library then add the System.Web.dll.
Then use this code

System.Web.Mail.SmtpMail.SmtpServer = "your server";

string to = "you@email.com";

string from = "someone@email.com";

string subject = "Email Test";

string body = "Test Body";

System.Web.Mail.SmtpMail.Send(to, from subject, body);

Use try Catch Based on the successes value you can...verify it...

Saratvaddilli, if this helps please login to Mark As Answer. | Alert Moderator

Here is a good .net component to verify email addresses:
http://www.kellermansoftware.com/p-37-net-email-validation.aspx

Saratvaddilli, if this helps please login to Mark As Answer. | Alert Moderator