Question : How to check valid email address

Hi expert,

I can send email from my c# program, but how do i know
the receiving email addres is valid?

Thks,
JT

Answer : How to check valid email address

If it is question is not regarding Validation of Email address....then you can try using SmtpFailedRecipientException to do some tracking work.
E.g.
http://blogs.securancy.com/?tag=/exception-handling
http://msdn.microsoft.com/en-us/library/system.net.mail.smtpexception.statuscode.aspx