C# SMTP email sending code fails for Yahoo Mail but works fine for other servers, can anyone help?

Question

I am using this code to send an SMTP email via the yahoo SMTP server, it is for a personal project I am writing.

using System.Net.Mail;
using System.Net;

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Answer 1

It's not supported through 465, but the following post details a workaround

How can I send emails through SSL SMTP with the .NET Framework?

UPDATE: This link details why it might work through Outlook Express, but not through the System.Net.Mail

http://blogs.msdn.com/b/webdav_101/archive/2008/06/02/system-net-mail-with-ssl-to-authenticate-against-port-465.aspx