Fix the errors occurred on ASP.NET Sample Web Pages
or
If the SMTP is neither install nor running, (i.e. your computer is not a
mail server), then you can modify the code around line 91 of register.aspx
as follows to use the mail server of your internet provider:
SmtpMail.SmtpServer = "mail.yourprovider.com"
SmtpMail.Send(msgIntro)
See page 429, item 8 for the explanation of the textbook written by Jim
Buyens.