An image processing apparatus transmits data via a network to a server equipped with a function for distributing an image received from a terminal apparatus over the network to another terminal apparatus over the network and a function for transmitting a track back notification with respect to a track back destination address. The image processing apparatus includes an image reading unit capable of reading an image from an original, a determining unit that determines a track back address that is used in correspondence with the image read by the image reading unit, and a data transmitting unit that transmits both image data indicative of the image read by the image reading unit, and address data indicative of the track back destination address determined by the determining unit to the server.