| 摘要 |
PROBLEM TO BE SOLVED: To reduce possibility of leakage of information related to a communication terminal which receives provision of information through a network.SOLUTION: A computer executes the steps of: receiving an acquisition request of a mail address to which identification information of a communication terminal is designated, which is transmitted from an information providing device receiving a provision request of information from the communication terminal; returning a second mail address which has use restriction and is different from the first mail address stored in association with the identification information to the information providing device; storing the second mail address in a correspondence information storage unit in association with the first mail address; and changing a destination of an electronic mail to the first mail address which the correspondence information storage unit stores in association with the second mail address when use of the second mail address is within a range of the use restriction, in response to a transfer request of the electronic mail whose destination is the second mail address. |
