Fedora Core 6 Evolution smtp timing out after last update.

I run Linux Fedora Core 6, and after the last update I can no longer send email, I recieve it just fine, and this is in both email programs that I use, evolution and claws-mail, are both doing the same thing, they receive just fine, but will not send email at all, a huge inconvenience for me.

Please help if you can.

Thank you

David C. Atkin