I get this error when trying to connect to the SMTP server:
DllDate: Nov 5 2007
Component: .NET 1.*
Checking connectivity to SMTP server something.something.net:25
Connect function failed.
SocketError: WSAECONNABORTED An established connection was aborted by the software in your host machine.
Failed to connect (2)
Check to see if you have an anti-virus/spyware program that’s blocking it. Sometimes those programs will allow "known" applications such as Outlook to work, but disallow others. You would need to configure the anti-virus software to allow your app to send email.