Patent ID: 9549278
Date: 2017-01-17
CPC Classifications: H04L,H04W

Claim:
1. A communication system having a first communication apparatus, a second communication apparatus, and a Domain Name System (DNS) server, wherein the first communication apparatus comprises: a storage unit that stores an address book containing transmission addresses; an accepting unit that accepts an export request from an information processing apparatus; a first determination unit that determines whether the address book to be exported contains a transmission address which is expressed by a Fully Qualified Domain Name (FQDN); a generating unit that generates export data which includes the address book in accordance with the acceptance of the export request, wherein the generating unit generates the export data including an address of the DNS server in a case where the first determination unit determines that the address book to be exported contains a transmission address which is expressed by the FQDN, wherein the DNS server performs name resolution of the transmission address which is expressed by the FQDN; and a transmitting unit that transmits the export data, which has been generated by the generating unit, to the information processing apparatus, and wherein the second communication apparatus comprises: