Outlook Express 6 Error

I am using Outlook to send mails and it works fine. Recently I tried to send a saved message I had by forwarding it. When I click send i get the error: "The message could not be sent. No sender was specifed. Please check your news account configuration." I can foward all of my other emails but for some reason this one does not want to work. Anyone know of any answers to this. Thanks in advance.

-Nick