| 摘要 |
PROBLEM TO BE SOLVED: To provide a system and a method efficient, effective and simple for preventing the distribution of an unwanted message to be transmitted to an accessible message server. SOLUTION: This system is provided with a message distribution client at a distant place and a token module in a network server. Both the message distribution client and the token module separately and independently generate the same tickets. One of these tickets is attached to an electronic message by the message distribution client and one electronic message is transmitted via the network server. The other ticket is stored in a valid ticket data base. When the network server receives a request for transmitting the electronic message, the server authenticates the message while using the message module. When the ticket attached to the electronic message is coincided with the ticket stored in the valid ticket data base, authentication is performed. The authenticated message is transmitted to a receiving side client and a non-authenticated message is not distributed. |
