Ever since Apple introduced Leopard I have been unable to send email to my dad he is on the same internet provider as me with obviously a different email address. The computer he is using is my old Power Mac G4 dual processor, I have just upgraded to the latest imac. We had the same problems when he had the G4 Powerbook and I had the Power Mac G4 dual processor. Any help much appreciated as I am sick of having to use a web email provider so that I can send him an email.