On the Brown side customers are not allowed to open packages without having first accepted delivery by signing for them; however, if the package has external damage, I will allow them to open and inspect it while I am standing there before signing for it. If they then choose to accept it I will note "damaged" in the remarks column in the DIAD. If they refuse the delivery I will sheet accordingly. If the package is damaged to the point where I choose not to deliver it I sheet it as "missed" per our most recent training.