Hi Duane,
The Email Configuration article also talks about the needed settings in the <appSettings section, that has not changed. In older versions we needed both the <appSettings stuff and the <system.net stuff but now we only need the <appSettings.
The <appSettings stuff can go in user.config which makes it easier during upgrades because you have less things to maintain in Web.config, whereas the system.net stuff had to be maintained in Web.config in previous versions.
Hope that helps,
Joe