Dear Friends, I am very new to setting up website, especially using IIS7 and Windows Server 2008. We have a web application in which one of the form is suppose to send email to a client/Administrator when data is being saved. There are problems that we face with this particular functionality. Environment: Windows Server 2008, SQL Server 2005, .Net Framework 2.0, 3.5. The first problem is that when we have the settings in web.config file as follow: <add key="SMTP.IpAddress" value="192.168.1.249"/> <add key="ServerIP" value="192.168.1.249"/> <add key="EmailSettings" value="Live"/> <add key="DemoMode" value="No"/> </appSettings>We got the following Error: Stack Trace: