Notes/Domino 4 and 5 Forum

I have been given full mail delegation (read,write,delete, send, to do list, etc.) but when I forward a message, it will send the message from my name instead of the person's name who delegated me for their mail. I hope this makes sense. I open someone else's mail, I can send mail as that person, but when I forward, it will forward from me, and not the other person. Would someone please help me correct this?