Occurs when the SMTP Mail system throws an error while attempting to send an e-mail message.
Assembly: System.Web (in System.Web.dll)
The event is raised when the SMTP mail server throws an exception when trying to send an e-mail message.
The default event does not handle the SMTP error from the mail system. The method that handles the event must set the Handled property of the SendMailErrorEventArgs object to true to handle the error and prevent it from being displayed to the user.
For more information about handling events, see Handling and Raising Events.