A data processing apparatus includes a virtual printer driver unit configured to receive job data of a job from an application executing unit, generate image data based on the job data, and generate print setting data by describing a print setting extracted from the job data; an output condition control unit configured to rewrite the image data and the print setting data generated by the virtual printer driver unit and determine an output destination from which the image data is to be printed out, in accordance with a rule including conditions for selecting the output destination and making a change in output contents of the job; and a transmission unit configured to select a printer driver corresponding to the determined output destination and transmit, to the selected printer driver, a print command relevant to a changed job corresponding to the image data and the print setting data that have been rewritten.