| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an e-mail addressed to the inside of an organization from being erroneously transmitted to an address outside of the organization. <P>SOLUTION: When a mail checking device 1 receives a transmission mail from a transmitter terminal 2, a flag setting unit 13 requires a user to confirm whether the transmission mail is addressed to the inside of an organization by referring to a definition information storage unit 15, and when the user instructs the transmission to be addressed only to the inside of the organization, the flag setting unit 13 sets a flag indicating an internal address transmission instruction in the transmission mail. A mail transmission control unit 31 receives the transmission mail from the mail checking device 1, and if its address is a representative address of a mailing list, develops respective mail addresses in the mailing list. When a mail gateway device 4 receives a transmission mail with a developed mail address which is outside of the organization, a flag inspection unit 41 inspects whether a flag is set in the transmission mail, and cancels transmission of the transmission mail in which a flag is set. A transmission cancellation notifying unit 33 notifies a transmitter of cancellation of the transmission. <P>COPYRIGHT: (C)2012,JPO&INPIT |
