A disclosed remote management system includes an electronic device; a communication adaptor; and a management apparatus connected via the communication adaptor to the electronic device and configured to remotely manage the electronic device. The communication adaptor includes a network segment specification unit for specifying a network segment to be managed, a device search unit configured to search the specified network segment to find the electronic device in the network segment, a remote management information obtaining unit configured to obtain remote management information from the found electronic device, a format verification unit configured to verify the obtained remote management information, an invalid device information sending/reporting unit configured to send or report electronic device information of the electronic device if the remote management information is invalid, and a change request sending unit configured to send a change request including updated remote management information to the electronic device.