How do I send email from ASP using SMTP Authentication in ASP.NET?

Here is the code sample :
'Create a new MailMessage object and specify the"From" and "To" addresses
Dim Email As New System.Net.Mail.MailMessage( _
   "", "")
Email.Subject = "test subject"
Email.Body = "this is a test"
Dim mailClient As New System.Net.Mail.SmtpClient()
'This object stores the authentication values
Dim basicAuthenticationInfo As _
   New System.Net.NetworkCredential("username", "password")
'Put your own, or your ISPs, mail server name onthis next line
mailClient.Host = ""
mailClient.UseDefaultCredentials = False
mailClient.Credentials = basicAuthenticationInfo
You can use your own email credentials, for example, your domain is then the email host : and the username is

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