Comments by krishraja8888 (Top 2 by date)

ya its throw error-
System.Net.Mail.SmtpFailedRecipientException: Mailbox unavailable. The server response was: No such user here at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, SmtpFailedRecipientException& exception) at System.Net.Mail.SmtpClient.Send(MailMessage message) at Default2.Button1_Click(Object sender, EventArgs e) in d:\inetpub\vhosts\leadforce.in\httpdocs\sendmail.aspx.cs:line 77