JP2015028749A - Information processing apparatus, information processing system, control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable flexible operation in transmitting/receiving e-mail, while enhancing security.SOLUTION: When e-mail transmitted from a client terminal 101 includes an attached file (step S101-S102), an internal mail server 104 specifies a password corresponding to a recipient of the e-mail, sets the password to the attached file, transmits the e-mail with the password, generates notification mail for the password, and transmits it to the same recipient (step S103-S124).

Description

  The present invention relates to encryption of a file attached to an e-mail.

  In recent years, in an e-mail system, e-mail is transmitted and received between client terminals via a network. However, it is used as a very convenient tool for exchanging information with a distant place.

  However, there are many cases in which highly confidential information is included in an e-mail and exchanged with the other party in an emergency or the like. In this case, the transmitted e-mail is sent to the other party's mail server. In the process, eavesdropping and tampering are performed, and there is a risk that highly confidential information cannot be transmitted safely.

  Therefore, a number of methods for encrypting e-mails have been proposed. For example, methods such as PGP (Pretty Good Privacy) and S / MIME (Secure / Multipurpose Internet Mail Extensions) have been proposed. By performing encryption and decryption on both the sending and receiving sides, the aforementioned risks are avoided.

  In order to use such a method, it is necessary to install software that provides functions for performing encryption and decryption for each client terminal. Consideration of the installation of these software (cost and safety) Etc.), installation work, and post-installation setting work, etc., there are some inconveniences for users.

  However, as a method of using electronic mail, there is a method in which information with low or no confidentiality is input in the body of the electronic mail, and a file containing information with high confidentiality is attached to the electronic mail and transmitted.

  In this case, it is not necessary to encrypt all emails as in the above-mentioned method, and it is possible to deal with by encrypting only the files attached to the emails. There is a mechanism for encrypting files attached by an intermediary mail server, etc., but even in such a configuration, a function to encrypt and decrypt both mail servers on the sending and receiving sides is provided. Software that needs to be installed.

Therefore, when an e-mail is transmitted from the internal client to the external client, an e-mail to be transmitted is encrypted and transmitted using a predetermined fixed password, and a notification e-mail including the fixed password is also transmitted. Technology has been presented (see, for example, Patent Document 1).
JP 2009-171542 A

  However, it is normal for persons who frequently exchange e-mails to operate by deciding a password to be used. In the technique described in Patent Document 1, a fixed password is notified to a destination external client. It is shown that one fixed password is notified, and when performing the operation as described above, an unsuitable configuration is taken.

  When the technology described in Patent Document 1 is used, a password for an e-mail transmitted from an internal mail is known to a user who uses this system, and an e-mail is erroneously transmitted to an unexpected user. Risks such as information leakage will occur.

  Furthermore, in the technology described in Patent Document 1, a configuration for automatically generating a password is described, and although it is possible to reduce the risk of information leakage, etc., when performing the operation as described above, This is an unsuitable configuration.

  The present invention has been made in order to solve the above-described problems. An information processing apparatus, an information processing system, and an information processing system capable of improving security while performing flexible operation in sending and receiving e-mails. It is an object to provide a control method and a program.

  A first invention for achieving the above object includes a storage means for storing a password to be set in a file attached to an e-mail according to a destination of the e-mail, a server mail receiving means for receiving the e-mail, Password setting determination means for acquiring a password corresponding to the destination of the e-mail received by the server mail receiving means from the password stored in the storage means, and the password acquired by the password setting determination means for the attached file And an e-mail generated by the e-mail generating means, and a server mail transmitting means for transmitting the e-mail generated by the e-mail generating means to the destination of the transmission source.

  A second invention for achieving the above object is an information processing system in which a plurality of client terminals that perform transmission and reception of electronic mail and an information processing apparatus are connected via a network, wherein the client terminal A client mail transmitting means for transmitting an e-mail; and a client mail receiving means for receiving the e-mail from a server mail transmitting means, wherein the information processing apparatus sets a password to the file attached to the e-mail Storing means according to the destination of the email, server mail receiving means for receiving the email from the client mail sending means, and a password corresponding to the destination of the email received by the server mail receiving means Password setting obtained from the password stored in the storage means Determining means; mail generating means for setting the password acquired by the password setting determining means for the attached file; and the client terminal that identifies the e-mail generated by the mail generating means from the transmission destination An information processing system comprising server mail transmission means for transmitting to the server.

  A third invention for achieving the above object is a method for controlling an information processing apparatus for performing transmission / reception processing of an electronic mail, comprising: a server mail receiving step for receiving an electronic mail; and the electronic mail received by the server mail receiving step A password setting determination step for acquiring a password for setting a password corresponding to the mail destination in a file attached to the e-mail from a password stored in a storage means for storing the password according to the e-mail destination, and the password setting determination step. An information processing apparatus comprising: a mail generation step for setting the acquired password for the attached file; and a server mail transmission step for transmitting the e-mail generated by the mail generation step to the destination of the transmission source This is a control method.

  A fourth invention for achieving the above object is a program that can be read and executed by an information processing apparatus that performs transmission / reception processing of an electronic mail, wherein the server mail receiving means receives the electronic mail, and the server mail receiving means A password setting determining means for obtaining a password for setting a password corresponding to the address of the e-mail received by the file attached to the e-mail from a password stored in a storage means for storing the password according to the e-mail address; Function as mail generation means for setting the password acquired by the password setting determination means for the attached file, and server mail transmission means for transmitting the email generated by the mail generation means to the destination of the transmission destination It is a program characterized by making it carry out.

  A fifth invention for achieving the above object is a method of controlling an information processing system in which a plurality of client terminals for transmitting and receiving e-mails and an information processing apparatus are connected via a network, wherein the client terminal Includes a client mail sending step for sending the e-mail, a client mail receiving step for receiving the e-mail from a server mail sending step, and the information processing apparatus receives the e-mail from the client mail sending step A server mail receiving step, and a password for setting a password corresponding to the destination of the e-mail received by the server mail receiving step in a file attached to the e-mail according to the destination of the e-mail. Password obtained from the password Word setting determination step, mail generation step for setting the password acquired in the password setting determination step for the attached file, and the client terminal in which the e-mail generated by the mail generation step is identified from the destination of the transmission destination A server mail transmission step for transmitting to the information processing system.

  A sixth invention for achieving the above object is a program that can be read and executed in an information processing system in which a plurality of client terminals that perform transmission / reception of electronic mail and an information processing apparatus are connected via a network, The client terminal is caused to function as a client mail transmission unit that transmits the electronic mail and a client mail reception unit that receives the electronic mail from a server mail transmission unit. A server mail receiving means for receiving an e-mail from the sending means, and a password for setting a password corresponding to the destination of the e-mail received by the server mail receiving means in a file attached to the e-mail according to the e-mail destination From the password stored in the storage means A password setting determining means to be obtained; a mail generating means for setting the password acquired by the password setting determining means for the attached file; and the e-mail generated by the mail generating means is identified from the destination address A program that functions as a server mail transmission unit that transmits to the client terminal.

  According to the present invention, after sending an e-mail, a predetermined password is notified by a destination e-mail address, so that e-mail can be sent and received, and security can be improved while performing flexible operation. There is an effect that it is possible.

It is a lineblock diagram showing a schematic structure of an information processing system concerning an embodiment of the present invention. It is a block diagram which shows schematic structure of the hardware of the various terminals which concern on embodiment of this invention. It is a block diagram which shows the function structure in the information processing system which concerns on embodiment of this invention. It is a flowchart which shows the password notification process of the email in the information system which concerns on embodiment of this invention. It is a block diagram which shows the structure of the screen for performing the transmission instruction | indication of the email in the client terminal which concerns on embodiment of this invention. It is a block diagram showing the structure of the screen for notifying the predetermined password of the attachment file in the client terminal which concerns on embodiment of this invention. It is a block diagram which shows the structure of the table used by the password notification process of the email in the information processing system which concerns on embodiment of this invention. It is a block diagram which shows the structure of the table used by the password notification process of the email in the information processing system which concerns on embodiment of this invention. It is a block diagram which shows the structure of the screen for performing the transmission instruction | indication of the email in the client terminal which concerns on embodiment of this invention. It is a block diagram which shows the structure of the screen for performing the transmission / reception setting of the email in the client terminal which concerns on embodiment of this invention. It is a block diagram showing the structure of the screen which shows an example which notifies that the predetermined password of the attachment file in the client terminal which concerns on embodiment of this invention is not set. In an embodiment of the present invention, it is a lineblock diagram showing composition of a screen for notifying a predetermined password of an attached file for transmitting to a transmission place. FIG. 5 is a configuration diagram illustrating a configuration of a screen for setting a transmission destination of a screen for notifying a predetermined password of an attached file in the embodiment of the present invention. It is a block diagram which shows the structure of the table used by the password notification process of the email in the information processing system which concerns on embodiment of this invention. In the embodiment of the present invention, it is a configuration diagram showing a configuration of a screen for setting a transmission destination of a screen for notifying a predetermined password of an attached file according to a user.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]

  FIG. 1 is a diagram illustrating an example of a system configuration in an information processing system according to an embodiment of the present invention. Note that the configurations of the various terminals shown in FIG. 1 are merely examples, and it goes without saying that there are various configuration examples depending on the purpose and application.

  As shown in FIG. 1, an information processing system 100 according to the present embodiment includes a client terminal 101, an administrator client terminal 102 used by a system administrator, and an internal mail server 104. They are connected to each other via a local area network (LAN) 103 so as to communicate with each other, and are constructed as an internal system.

  The client terminal 101 is connected to at least one or more external mail servers 106 via the wide area network 105 so that they can communicate with each other. A firewall device (not shown) is installed between the LAN 103 and the wide area network 105, and communication control processing is performed according to a predetermined rule.

  The internal mail server 104 is a server device for relaying electronic mail by the client terminal 101. The internal mail server 104 specifies the SMTP communication content of the client terminal 101 and performs various processes described later according to the communication content.

  The administrator client terminal 102 sets and manages the internal mail server 104.

  Next, the hardware configuration of various terminals of the internal mail server 104 shown in FIG. 1 will be described with reference to FIG. Note that the client terminal 101 and the administrator client terminal 102 have the same configuration, and a description thereof will be omitted.

  The CPU 201 comprehensively controls each device and controller connected to the system bus 204. In addition, the ROM 202 or the external memory 211 is provided with a BIOS (Basic Input / Output System) or an operating system program (hereinafter referred to as an OS), which is a control program for the CPU 201, or a function executed by each server or each client device. Various necessary programs to be described later are stored.

  The RAM 203 functions as a main memory, work area, and the like for the CPU 201. The CPU 201 implements various operations by loading a program necessary for execution of processing into the RAM 203 and executing the program.

  An input controller (input C) 205 controls input from an input unit 209 indicating a pointing device such as a keyboard or a mouse (not shown). A video controller (VC) 206 controls display on a display device such as a CRT display (CRT) 210. The display device may be a liquid crystal display as well as a CRT.

  A memory controller (MC) 207 is a hard disk (HD), floppy disk (registered trademark FD) or PCMCIA card slot for storing boot programs, browser software, various applications, font data, user files, editing files, various data, and the like. Controls access to an external memory 211 such as a CompactFlash (registered trademark) memory connected via an adapter.

  A communication I / F controller (communication I / FC) 208 is connected to and communicates with an external device via a network, and executes communication control processing in the network. For example, Internet communication using TCP / IP is possible.

  Note that the CPU 201 enables display on the display device 210 by executing outline font rasterization processing on a display information area in the RAM 203, for example. Further, the CPU 201 enables a user instruction with a mouse cursor (not shown) on the display device 210.

  A program or the like for executing a password notification mail transmission process for realizing the present invention is stored in the external memory 211 and is executed by the CPU 201 by being loaded into the RAM 203 as necessary.

  Definition information and various information tables used in the password notification mail transmission process according to the present invention are also stored in the external memory 211. Detailed description thereof will be described later.

  FIG. 3 is a schematic diagram illustrating a functional configuration according to the information processing system 100, and an outline of each function will be described. The contents of each function will be described in conjunction with the flowchart shown in FIG.

  As illustrated in FIG. 3, the client terminal 101 includes a client mail transmission unit 301, and the client mail transmission unit 301 is connected to the internal mail server 104 via the LAN 103.

  The client mail transmission unit 301 has a function realized by software for instructing transmission of an electronic mail. For example, the client mail transmission unit 301 displays a mail creation screen 500 shown in FIG. 209, a destination 501 indicating an e-mail transmission destination address, a CC (Carbon Copy) 502, a subject 503 indicating an e-mail title, an e-mail body 504, and an attachment indicating a file attached to the e-mail Input or attach to the file 505 or the like.

  When the user transmits an e-mail, the user presses a send button 506 provided on the e-mail creation screen 500 to send the e-mail created using the input unit 209 to the destination 501 and CC 502 set. Send to the destination address.

  The mail creation screen 500 also includes an attachment button 507, and the user designates a file existing in the client terminal 101 by pressing the attachment button 507 when attaching the attachment file 505 to the e-mail. A display screen (not shown) is displayed on the display device 210, and a file to be attached is attached to an e-mail by selecting and specifying from the file displayed on the screen using the input unit 209.

  The client terminal 101 includes client mail receiving means 302, and the client mail receiving means 302 is connected to the internal mail server 104 via the network 103.

  The client mail receiving unit 302 receives an e-mail from the client terminal 101 existing in the internal system or a client terminal existing in an external system other than the internal system via the internal mail server 104.

  The received mail is displayed on the display device 210 including items such as the address 501, CC 502, subject 503, e-mail text 504, and attached file 505 of the mail creation screen 500 shown in FIG. Check the contents of the received e-mail.

  The internal mail server 104 includes server mail receiving means 303, and the server mail receiving means 303 is connected to at least one or more external mail servers 106 via the client terminal 101 or the wide area network 105.

  The server mail receiving unit 303 receives an e-mail from the client terminal 101 existing in the internal system or a client terminal existing in an external system other than the internal system.

  The internal mail server 104 includes a password setting determination unit 304, a password storage unit 305, a mail generation unit 306, a server mail transmission unit 307, a password notification mail generation unit 308, and a password notification mail transmission unit 309.

  The password setting determination unit 304 is connected to the server mail reception unit 303, the password storage unit 305, the mail generation unit 306, and the password notification mail generation unit 308.

  When the server mail receiving unit 303 receives the notification that the e-mail has been received, the password setting determination unit 304 analyzes the content of the e-mail, but the analysis content is summarized as an e-mail with an attached file. If there is, the e-mail destination (CC may be included) is extracted, and a predetermined password corresponding to this e-mail is specified, or a password is automatically generated at random.

  In other words, for a destination set as a destination, if a password is used for an attached file using a predetermined password, a predetermined password for setting the attached file is used. If the password is specified and the operation using the predetermined password is not performed, the password is automatically and randomly generated every time an e-mail is sent.

  Passwords to be set according to such destinations are stored in advance in a table constituting the password storage means 305, and an example of the configuration of this table is a password table 700 shown in FIG.

  The password table 700 transmits an e-mail address 701 indicating a destination to be a target for setting a predetermined password in an attached file, an attached file password 702 indicating a predetermined password, and an e-mail notifying only the password set in the attached file. It has a configuration including a use date and time 703 that indicates the date when the date is set.

  The password setting determination unit 304 determines whether or not a predetermined password corresponding to the extracted destination exists in the password storage unit 305 (password table 700). If it does not exist, the password is automatically generated at random.

  Or, even if it exists, you can use an automatically generated password every time you send an e-mail to each other. In this case, the attached file password 702 in the password table 700 may be set with information for automatically generating a password randomly.

  The password setting determination unit 304 notifies the mail generation unit 306 of the password and the analysis end result when the password corresponding to the extracted destination exists in the password storage unit 305 after analyzing the email. If not, the mail generation means 306 is notified of the analysis end result.

  In addition, when a predetermined password corresponding to the extracted destination exists in the password storage unit 305, the password notification mail generation unit 308 is notified of the extracted destination, the password, and the like together with the analysis end result. Not only items but also items can be notified as long as the contents (to be described later) to be notified to the sender can be specified from the e-mail.

  The mail generation unit 306 is also connected to the server mail transmission unit 307. When the password setting determination unit 304 receives a notification of the password and the analysis end result, the mail generation unit 306 receives the attached file of the email received by the server mail reception unit 303. Is extracted, the notified password is set for the attached file, the attached file with the password set is attached to the e-mail again, and output to the server mail transmitting means 307.

  When the password setting determination unit 304 receives only the notification of the analysis end result, the e-mail received by the server mail receiving unit 303 is output to the server mail transmitting unit 307.

  The server mail transmission unit 307 is connected to at least one or more external mail servers 106 via the client terminal 101 or the wide area network 105.

  When the server mail transmission unit 307 receives the output of the e-mail from the mail generation unit 306, the server mail transmission unit 307 transmits the e-mail to the client terminal 101 existing in the internal system or the client terminal existing in the external system other than the internal system. Do.

  The password notification mail generation unit 308 is connected to the password notification mail transmission unit 309. When the notification of the extracted destination, password, and the like is received from the password setting determination unit 304 together with the analysis end result, the attached file is attached. The destination of the e-mail is extracted from the e-mail received by the server mail receiving unit 303, and an e-mail for notifying only the password set in the attached file is generated.

  As an example of an email notifying only the password set in the attached file, there is a password notification screen 600 shown in FIG. 6. The password notification screen 600 includes a destination 601 indicating a destination address of the email, CC (Carbon Copy). 602, a subject 603 indicating the title of the e-mail, and an e-mail body 604, and within the e-mail body 604, the destination of the e-mail with the attached file attached (not an e-mail notifying the password), A name 606 of the attached file and a password 607 set for the attached file are displayed.

  In the destinations 601 and CC 602, the destination of the sender that sent the e-mail with the attached file and the destination of the person who manages the internal mail server 104 are set in the order of description, and the subject 603 includes the attached file. The password (password notified from the password setting determination unit 304) is notified, and contents indicating that this password needs to be notified to the destination of the e-mail attached with the attached file are set.

  The e-mail body 604 includes an e-mail received by the server mail receiving unit 303 as the destination address of the e-mail to which the attached file is attached and information notified from the password setting determining unit 304 as described above. Information that can be easily extracted from the mail, for example, a title set in the subject 503, or the like that easily identifies the electronic mail with the attached file attached may be output.

  When the generation of the e-mail for notifying only the password set in the attached file is completed, the password notification mail generation unit 308 notifies the password notification mail transmission unit 309 of the completion of generation.

  The password notification mail transmission unit 309 is connected to at least one or more external mail servers 106 via the client terminal 101 or the wide area network 105.

  Upon receiving the generation completion notification from the password notification mail generation unit 308, the password notification mail transmission unit 309 sets the attached file to the client terminal 101 existing in the internal system or a client terminal existing in the external system other than the internal system. Send an e-mail notifying only the entered password. In this case, an e-mail for notifying only the password set in the attached file is sent to the transmission source that sent the e-mail with the attached file attached.

  The administrator client terminal 102 includes password setting means 310, which is connected to the internal mail server 104 and displays a screen (not shown) for setting a password according to the destination. The information is displayed on the apparatus 210 and the administrator is made to input.

  The password input by the password setting unit 310 is transmitted to the internal mail server 104 via the network 103 and stored in the password storage unit 305 (password table 700).

  That is, a screen (not shown) for setting a password corresponding to the destination in the password setting unit 310 can input each item (at least the items of the mail address 701 and the attached file password 702) in the password table 700. It has. However, when the record is initially registered or when the record is changed, the use date 703 is set as a blank.

  Next, FIG. 4 shows a flowchart representing a password notification mail transmission process in the information processing system according to the embodiment of the present invention. In addition, about the process performed by each step, a process is performed under control of CPU201 of the internal mail server 104. FIG.

  In step S101, the server mail receiving unit 303 receives the e-mail transmitted by the client mail transmitting unit 301 of the client terminal 101. In step S102, the password setting determining unit 304 is attached to the e-mail received in step S101. Determine whether the file exists.

  If it is determined that the attached file exists, the process proceeds to step S103, and if it is not determined that the attached file exists, the process proceeds to step S117.

  In step S103, the password setting determination unit 304 acquires information about the destination from the e-mail. In step S104, the password setting determination unit 304 corresponds to the mail address 701 of the password table 700 corresponding to the destination acquired in step S103. The attached file password 702 is acquired, and the password corresponding to the destination is specified. If the email address 701 corresponding to the destination does not exist in the password table 700, it is specified that there is no password corresponding to the destination.

  In step S105, the password setting determination unit 304 determines whether or not the password specified in step S104 is a predetermined password. If it is determined that the password is a predetermined password, the process proceeds to step S106, and the predetermined password is determined. If not, the process proceeds to step S118.

  In this determination method, only a predetermined password is set in the attached file password 702, and a destination that does not exist in the password table 700 is determined by automatically generating a random password. In this step, if a predetermined password corresponding to the destination exists in the attached file password 702, the process proceeds to step S106, and if not, the process proceeds to step S118.

  As another determination method, in the case where the determination is performed by setting a predetermined password in the attached file password 702 or information for automatically generating a password randomly, in this step, the attached file password If the information set in 702 is a predetermined password, the process proceeds to step S106, and information indicating that a password is automatically generated at random (for example, if the password is set as aaa and attached file password 702, If the password is automatically generated at random, etc., the process proceeds to step S118. In the case of this other determination method, although not shown in the flowchart, if there is no destination in the password table 700, the process proceeds to step S117.

  In step S106, the mail generation unit 306 extracts the attachment file of the email received in step S101, and in step S107, the mail generation unit 306 identifies the attachment file extracted in step S106 in step S104. Set a password.

  In step S108, the mail generation unit 306 attaches the attached file for which the password is set in step S107 to the electronic mail again.

  In step S109, the password notification mail generation unit 308 determines whether or not to notify the destination of an e-mail that notifies only the password set in the attached file for the first time. If it is not determined to notify for the first time, the process proceeds to step S113.

  In this step, every time an e-mail is sent, a predetermined password is notified once (first time) without sending a predetermined password notification mail, and thereafter, the transmission of the notification mail is stopped. Is possible.

  As a result, there are effects such as password leakage, oversight of e-mail accompanying increase in the number of received e-mails, and reduction of communication load.

  This determination can be made by referring to the use date and time 703 of the password table 700. If the use date and time 703 is set as a blank, only the password set in the attached file is used for the first time. It is determined that the e-mail to be notified is notified, and the process proceeds to step S110. If the use date and time 703 is set, the process proceeds to step S113.

  The determination in this step is based on whether or not notification is made for the first time. However, the determination is made based on whether or not the user has notified the password used when exchanging e-mails with each other a predetermined number of times. May be.

  In this case, the use count item may be added to the password table 700, and the count may be incremented each time the password is used. For example, the increment is performed after the process of step S112 is performed.

  In step S110, the password notification e-mail generation unit 308 uses a predetermined address using the destination of the e-mail received by the server mail receiving unit 303 in step S101, the destination acquired in step S103, and the password specified in step S104. Generate an e-mail notifying only the password set in the attached file with the password output. As described above, one example of this e-mail has the configuration shown in FIG.

  In step S111, the server mail transmission unit 307 transmits the e-mail generated in step S108 to the destination (including CC), and then in step S112, the server mail transmission unit 307 generates the e-mail in step S110. An e-mail notifying only the password set in the attached file is transmitted to the destination of the e-mail received by the server mail receiving means 303 in step S101. In this step, the transmitted date is stored in the use date 703.

  In step S113, the password notification mail generation unit 308 determines whether or not a predetermined period has elapsed since the previous use of the predetermined password. If it is determined that the predetermined period has elapsed, the process proceeds to step S114, If it is not determined that the period has elapsed, the process proceeds to step S117.

  In step S114, the password notification mail generation unit 308 uses a predetermined destination using the destination of the e-mail received by the server mail receiving unit 303 in step S101, the destination acquired in step S103, and the password specified in step S104. Generate an e-mail notifying only the password set in the attached file with the password output. As described above, one example of this e-mail has the configuration shown in FIG. In this step, the fact that a predetermined period has elapsed may be additionally output to this configuration to prevent user confusion.

  In step S115, the server mail transmission unit 307 transmits the e-mail generated in step S108 to the destination (including the CC), and in step S116, the password notification e-mail transmission unit 309 generates in step S114. The e-mail notifying only the password set in the attached file is transmitted to the destination of the e-mail received by the server mail receiving unit 303 in step S101. In this step, the transmitted date is stored in the use date 703.

  In step S117, the server mail transmission unit 307 transmits the electronic mail acquired in step S101 to the destination (including CC).

  In step S118, the password notification mail generation unit 308 generates a random password such as a one-time password. In step S119, the mail generation unit 306 extracts the attached file of the email received in step S101, and in step S120. Then, the mail generation unit 306 sets the password generated in step S118 for the attached file extracted in step S119.

  In step S121, the mail generation unit 306 attaches the attached file in which the password is set in step S107 to the electronic mail again.

  In step S122, the password notification e-mail generation unit 308 generates the e-mail transmission source destination received by the server mail reception unit 303 in step S101, the destination acquired in step S103, and the password generated in step S118. Generate an e-mail notifying only the password set in the attached file with the password output. As described above, one example of this e-mail has the configuration shown in FIG.

  In step S123, the server mail transmission unit 307 transmits the e-mail generated in step S121 to the destination (including the CC), and in step S124, the password notification e-mail transmission unit 309 generates in step S122. The e-mail notifying only the password set in the attached file is transmitted to the destination of the e-mail received by the server mail receiving unit 303 in step S101.

  In the first embodiment of the present invention, the password is applied only to the destination, but the password may be applied to the mail address included in the CC. In this case, in step S103, the password setting determination unit 304 acquires the mail address set in the destination and CC from the electronic mail.

  In step S104, the password setting determination unit 304 acquires the attached file password 702 corresponding to the mail address in the password table 700 corresponding to the destination acquired in step S103 or the mail address set in the CC, respectively. The password corresponding to the mail address set in the destination or CC is specified.

  If there is no mail address 701 corresponding to the mail address set in the address or CC in the password table 700, it is specified that there is no password corresponding to the mail address set in the address or CC.

  The processing after step S105 is performed as many times as the number of mail addresses set in the destination or CC.

  That is, a password corresponding to the mail address set in the destination or CC is set for the attached file, and the attached file in which the password is set is attached to the e-mail.

  At this time, an e-mail with an attached file with a password set is generated for the number of e-mail addresses set in the destination or CC.

  Furthermore, an email is generated that notifies only the password set in the attached file in accordance with the password corresponding to the mail address set in the destination or CC by the number of mail addresses set in the destination or CC. In step S101, the server mail receiving unit 303 transmits the received e-mail to the destination of the transmission source.

  When taking such an aspect, basically, when there is no destination in the password table 700 or the mail address 701 corresponding to the mail address set in the CC, the destination determined as not existing after step S118. Alternatively, a random password is generated for each e-mail address set in the CC, and an e-mail notifying only the password set in the attached file is generated. In step S101, the server mail receiving unit 303 Send to the destination of the source of the received email.

Similarly, when there are a plurality of destinations, it is needless to say that the processing is performed as many as the number of mail addresses set as the destinations. The same applies when there are a plurality of mail addresses set in the CC.
[Second Embodiment]

  Next, the second embodiment will be described. Since the configuration and processing are substantially the same as those of the first embodiment, the same configuration and processing will be described below using the same reference numerals.

  In the first embodiment, the password to be used is applied according to the address of the e-mail transmission destination. However, in the second embodiment, according to the e-mail transmission source and the e-mail address of the transmission destination. Apply a password to use.

  The first embodiment is different from the first embodiment in that items of mail address_1801 and mail address_2802 are added to the configuration of the password table 700 shown in FIG. 7 as shown in FIG. Address_2802 is the same item as the mail address 701. That is, the item of the mail address_1801 is added to the password table 700 shown in FIG.

  In the password notification mail transmission process shown in FIG. 4 using the password table 800, in step S103, the password setting determination unit 304 determines the address and the mail address of the transmission source when acquiring the address from the e-mail. get.

  In step S104, the password setting determination unit 304 acquires the attached file password 702 corresponding to the mail address_1801 and the mail address_2802 of the password table 800 corresponding to the combination of the destination and the transmission source acquired in step S103. The password corresponding to the destination is specified. If there is no e-mail address_1801 and e-mail address_2802 corresponding to the combination of the destination and the transmission source in the password table 800, it is specified that there is no password corresponding to the combination of the destination and the transmission source.

In the processing after step S107, processing is performed using the password corresponding to the combination of the destination and the transmission source specified in step S104.
[Third Embodiment]

  Next, the third embodiment will be described. Since the configuration and processing are substantially the same as those of the first and second embodiments, the same reference numerals are used for the same configuration and processing. Hereinafter, explanation will be given.

  In the first embodiment, a password to be used is applied according to the address of the e-mail transmission destination, and in the second embodiment, it is used according to the e-mail transmission source and destination e-mail addresses. Although the password is applied, in each embodiment, which password is applied is set in advance by the password setting unit 310 in the internal mail server. In the third embodiment, a predetermined password is used. Alternatively, it is possible to select a random password when sending an e-mail.

  The user creates an email using the email creation screen 500 shown in FIG. 9. At this time, by pressing a tool button 508 provided on the email creation screen 500, the email transmission / reception control, email It is possible to make settings such as the address book of addresses, security of received e-mails, etc. As an example, various settings are made using the setting screen 900 shown in FIG.

  The setting screen 900 can be used to set a security for the email to be sent and the like to give a warning for a predetermined action to the mailer when the mailer starts and ends, and in this embodiment, the security for the email to be sent is set. In setting, it is possible to select a method for automatically setting a password in an attached file of an electronic mail.

  As a selection method, in the area of automatic password setting 901 for an attached file on the setting screen 900, there is no setting 902 for selecting when the password is not automatically set for the attached file, and a predetermined password is set for the attached file. If any one of the predetermined password setting 903 for selecting at the time and the random password setting 904 for selecting at the time of setting the random password to the attached file is selected, the setting value is set in the e-mail to be transmitted Is done.

  Note that the no setting 902, the predetermined password setting 903, and the random password setting 904 are controlled so that any one of them can be selected like a radio button.

  When the user presses an OK button 905 after selecting any one of “no setting 902”, “predetermined password setting 903”, and “random password setting 904”, the selected setting method is subsequently set for the e-mail to be transmitted. Applied.

  That is, for the other party set as the destination, the user selects the predetermined password setting 903 if the operation is performed to set the password for the attached file using the predetermined password. If the user specifies a predetermined password to be set in the attached file and does not operate using the predetermined password, the user selects the random password setting 904 and sends an e-mail each time Automatically generate a random password automatically.

  When the user transmits an e-mail after performing such settings, in step S104, the password setting determination unit 304 determines that the setting is not set 902, the mail generation unit 306 After notifying the analysis end result, in step S117, the server mail transmission unit 307 transmits the e-mail received in step S101 to the transmission destination. That is, the e-mail is transmitted without setting a password for the attached file.

  On the other hand, if the predetermined password setting 903 is set, it is determined in step S105 whether or not the predetermined password corresponding to the destination extracted from the e-mail in the server mail receiving unit 303 exists in the password table 700. If there is no information for automatically generating a password randomly in the attached file password 702 of the password table 700, the process proceeds to step S106, and as described above, a predetermined password is set. Thereafter, as in the first and second embodiments, an e-mail attached with an attached file with a password and an e-mail notifying only the password set in the attached file are generated. .

  On the other hand, if it does not exist or exists but information indicating that a password is automatically and randomly generated is set in the attached file password 702 of the password table 700, the mail generation means 306 determines that an error has occurred. Then, an electronic mail indicating that an error is to be notified is generated, and the generated electronic mail is transmitted to the transmission source.

  In this case, as shown in FIG. 11, the e-mail body 604 of the password notification screen 600 displays that a predetermined password is not set in the system and notifies the transmission source.

  Further, when the random password setting 904 is set, the process proceeds to step S118, and a password is automatically generated at random. Thereafter, as in the first embodiment and the second embodiment, the password is set. An e-mail to which an attached file with “” is attached and an e-mail notifying only the password set in the attached file are generated.

  It is also possible to provide only the predetermined password setting 903 and the random password setting 904 without providing the setting screen 902 without setting.

  Or, for example, when sending an e-mail with an attached file to an external domain, it is assumed that the password is always set in the attached file, so the e-mail is sent with the setting 902 not set. When the setting is made or no setting 902 is made on the setting screen 900, the destination 501 of the mail creation screen 500 is acquired, and when the destination includes a destination of an external domain, the setting 902 is grayed out. Depending on, the selection may be disabled.

  In this case, the client terminal 101 compares the destination domain of the client terminal 101 with the destination set in the destination 501, and if the destination is different, the client terminal 101 may determine that the destination is an external domain. If it is known that the setting has been made, there is no problem even if any determination method is used.

Alternatively, a configuration may be adopted in which a warning is issued to the user when an e-mail is transmitted in a state where the setting is not set 902 or when the setting screen 902 is set to no setting 902.
[Fourth Embodiment]

  Next, the fourth embodiment will be described. Since the configuration and processing are substantially the same as those of the first to third embodiments, the same reference numerals are used for the same configuration and processing. Hereinafter, explanation will be given.

  In the first embodiment, the password notification email generation unit 308 generates an email notifying only the password set in the attached file with the email transmission source as the destination, and the password notification email transmission unit 309 generates the email. An e-mail notifying only the password set in the generated attachment is sent to the sender.

  However, in the fourth embodiment, an e-mail notifying only the password set in the attached file is generated as both the e-mail transmission source and the transmission destination, and the e-mail is generated for both the destinations. Send an e-mail notifying only the password set in the attached file.

  Therefore, in the password notification mail transmission process shown in the flowchart of FIG. 4 described in the first embodiment, in step S110, step S114, and step S122, the password notification mail generation means 308 performs server mail reception means in step S101. An e-mail notifying only the password set in the attached file to which a predetermined password is output using the destination address of the e-mail received in step 303, the address acquired in step S103, and the password specified in step S104. Is generated.

  Therefore, in the fourth embodiment, in each of these steps, first, to generate an e-mail notifying only the password set in the attached file to the e-mail sender, the same processing as described above is performed. I do. Here, as described above, one example of this e-mail has the configuration shown in FIG. 6 as described above.

  Then, an e-mail for notifying only the password set in the attached file is generated for the address acquired in step S103. In this case, the address acquired in step S103 is set as the e-mail address to be generated. Using the password specified in step S104, the electronic mail in which a predetermined password is output is generated.

  As an example of an email notifying only the password set in the attached file, there is a password notification email 1000 shown in FIG. 12. The password notification email 1000 includes a destination 1001 indicating the destination address of the email, CC (Carbon Copy) 1002, a subject 1003 indicating the title of the email, and an email text 1004.

  The destination 1001 is set with the destination acquired in step S103, and the subject 1003 includes contents (for example, password notification) indicating that this email is an email notifying only the password set in the attached file. Set.

  The e-mail body 1004 outputs the name corresponding to the destination and the password notified from the password setting determination unit 304. However, as described above, the information notified from the password setting determination unit 304 includes information that can be extracted from the e-mail received by the server mail receiving unit 303, for example, an attached file such as a title set in the subject 503. It is also possible to output information that makes it easy to specify the e-mail to be sent.

  Note that the generation order of the e-mail in which the attached file exists is not limited to the order of description, and the generation order may be reversed.

  In the first embodiment, in step S112, step S116, and step S124, the server mail transmission unit 307 sends an e-mail notifying only the password set in the generated attached file to the server mail receiving unit in step S101. In the fourth embodiment, in each step, as in the first embodiment, first, with respect to the destination of the transmission source, An e-mail (see FIG. 6) notifying only the password set in the attached file is transmitted.

  In step S101, an e-mail (see FIG. 12) for notifying only the password set in the attached file is transmitted to the e-mail transmission destination received by the server mail receiving unit 303.

  Note that the transmission order of e-mails with attached files is not limited to this description order, and the order may be reversed. In each step, the date of transmission is stored in the use date 703 as in the first embodiment.

  Further, as in the first embodiment, the processing after step S105 is performed by the number of destinations or the number of mail addresses set in the CC.

That is, an e-mail with an attached file set with a password is generated for the number of destinations or the number of e-mail addresses set in the CC, but in step S101, The e-mail to be transmitted to the transmission source (see FIG. 6) and the e-mail to be transmitted to the transmission destination (see FIG. 12) are respectively the destination or the number of mail addresses set in the CC. Generate only minutes.
[Fifth Embodiment]

  Next, the fifth embodiment will be described. Since the configuration and processing are substantially the same as those of the first to fourth embodiments, the same reference numerals are used for the same configuration and processing. Hereinafter, explanation will be given.

  In the fifth embodiment, the destination selected by selecting one of the transmission source, the transmission destination, and both the transmission source and the transmission destination of the electronic mail received by the server mail reception unit 303 in step S101. Send an e-mail notifying only the password set in the attached file.

  As a means for selecting this destination, as shown in FIG. 13, a security setting screen 1100 can be mentioned.

  The security setting screen 1100 includes a password notification mail transmission destination setting area 1101 for selecting an email destination for notifying only the password set in the attached file. The password notification mail transmission destination setting area 1101 includes an attachment. Source notification button 1102 for pressing when notifying the sender of an e-mail notifying only the password set in the file, destination button 1103 for pressing when notifying the destination, and the source A transmission source transmission destination notification button 1104 for notifying both the transmission destination and the transmission destination is provided.

  The security setting screen 1100 is displayed on the administrator client terminal 102 and is set by the administrator. After selecting one of the buttons in the password notification mail transmission destination setting area 1101, the user presses the OK button 1105. This completes the setting.

  When the setting is completed, information indicating either the transmission destination, the transmission source, or both the transmission source and the transmission destination is stored in the notification destination setting table 1200 illustrated in the upper part of FIG. That is, information corresponding to the button selected in the password notification mail transmission destination setting area 1101 is stored.

  The notification destination setting table 1200 is provided as a table constituting the password storage unit 305 of the internal mail server 104.

  In the process of sending the password notification mail shown in FIG. 4, the notification destination setting table 1200 is referred to in the step immediately before each step of step S110, step S114, and step S122. To specify whether to send an e-mail notifying only the password set in the attached file.

  When an e-mail notifying only the password set in the attached file is transmitted to the transmission source with reference to the notification destination setting table 1200, as described in the first embodiment, the attached file for transmission to the transmission source An e-mail (see FIG. 6) notifying only the password set in is generated and transmitted.

  Further, referring to the notification destination setting table 1200, when an e-mail notifying only the password set in the attached file is transmitted to the transmission destination, as described in the fourth embodiment, it is transmitted to the transmission source. An e-mail notifying only the password set in the attached file is not generated, but an e-mail notifying only the password set in the attached file to be transmitted to the transmission destination (see FIG. 12) is generated and transmitted. .

  Furthermore, referring to the notification destination setting table 1200, when an e-mail notifying only the password set in the attached file is transmitted to both the transmission destination and the transmission source, as described in the fourth embodiment, E-mails (see FIG. 6 and FIG. 12) for notifying only the password set in the attached file for transmission to the transmission source and the transmission destination are respectively generated and transmitted.

  In the fifth embodiment, the destination to which an e-mail for notifying only the password set in the attached file is selected for the information processing system 100 using the notification destination setting table 1200. In addition, it is possible to make settings according to the user, that is, the destination of the e-mail transmission source.

  In this case, a setting target destination field 1106 for inputting a destination to be set is provided on the security setting screen 1100 of FIG. 13 as shown in FIG. By providing the password notification mail transmission destination setting area 1101, it is possible to set for each user, that is, according to the destination of the electronic mail transmission source.

  Then, when the administrator presses the OK button 1105 using the administrator client terminal 102, the information set on the security setting screen 1100 is displayed in the notification destination setting table 1201 for each destination displayed in the lower part of FIG. Remember.

  The notification destination setting table 1201 for each destination stores information in a mail address 1202 indicating the mail address of the transmission source, a transmission destination, a transmission source, and a notification destination 1203 indicating either the transmission source or the transmission destination. . That is, information corresponding to the button selected in the setting target address field 1106 and the password notification mail transmission destination setting area 1101 is stored.

  In the process of sending the password notification mail shown in FIG. 4, in the step immediately before each of steps S110, S114, and S122, the destination-specific notification destination setting table 1201 is referred to, and in step S101, The notification destination 1203 corresponding to the mail address 1202 corresponding to the destination of the transmission source of the email received by the server mail receiving unit 303 is specified.

  As a result, it is possible to specify to which destination the e-mail notifying only the password set in the attached file is transmitted.

  Then, when any one of the transmission destination, the transmission source, and both the transmission source and the transmission destination is specified, as described above, only the password set in the attached file according to the transmission destination is notified. Generate and send.

  Furthermore, by setting the notification destination 1203 in the notification destination setting table 1201 for each destination according to the combination of the transmission source and the transmission destination, the e-mail received by the server mail receiving unit 303 in step S101 is set. A mode in which a notification destination 1203 corresponding to a mail address corresponding to a destination of a transmission source and a transmission destination is specified, and to which destination an email for notifying only a password set in an attached file is specified. It is also possible to take.

  As described above, according to the present invention, after an e-mail is transmitted, a predetermined password is notified by a destination e-mail address, so that e-mail transmission / reception can be performed flexibly while improving security. Can be planned.

  Further, the present invention can take an embodiment as a method, a program, a storage medium, or the like.

  In this case, the program itself read from the recording medium realizes the novel function of the present invention, and the recording medium storing the program constitutes the present invention. As a recording medium for supplying the program, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, DVD-ROM, magnetic tape, nonvolatile memory card, ROM, EEPROM, silicon A disk or the like can be used.

  Further, by executing the program read by the computer, not only the functions of the above-described embodiments are realized, but also an OS or the like operating on the computer based on an instruction of the program is a part of the actual processing or It goes without saying that the case where the functions of the above-described embodiments are realized by performing all of the above processing is also included.

  Furthermore, after the program read from the recording medium is written to the memory provided in the function expansion board inserted into the computer or the function expansion unit connected to the computer, the function expansion board is based on the instructions of the program code. It goes without saying that the case where the CPU or the like provided in the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

  Needless to say, the present invention can be applied to a case where the present invention is achieved by supplying a program to a system or apparatus. In this case, by reading a recording medium storing a program for achieving the present invention into the system or apparatus, the system or apparatus can enjoy the effects of the present invention.

  Furthermore, by downloading and reading a program for achieving the present invention from a server, database, etc. on a network using a communication program, the system or apparatus can enjoy the effects of the present invention. In addition, all the structures which combined each embodiment mentioned above and its modification are also included in this invention.

100 Information Processing System 101 Client Terminal 102 Administrator Client Terminal 103 Local Area Network (LAN)
104 internal mail server 105 wide area network 106 external mail server 201 CPU
202 RAM
203 ROM
204 System Bus 205 Input Controller 206 Video Controller 207 Memory Controller 208 Communication I / F (Interface) Controller 209 Input Unit 210 Display Device 211 External Memory

Claims (19)

Storage means for storing a password to be set for the file attached to the e-mail according to the destination of the e-mail;
Server mail receiving means for receiving e-mail;
Password setting determination means for obtaining a password corresponding to the destination of the e-mail received by the server mail receiving means from the password stored in the storage means;
Mail generating means for setting the password acquired by the password setting determining means for the attached file;
Server mail transmission means for transmitting the email generated by the mail generation means to the destination of the transmission destination;
An information processing apparatus comprising:   When the password corresponding to the destination of the e-mail can be acquired from the storage unit by the password setting determination unit, the mail generation unit sets the password as a predetermined password for the attached file, When the password corresponding to the destination of the e-mail cannot be acquired from the storage unit by the password setting determining unit, the mail generating unit automatically generates a password at random and sets it for the attached file. The information processing apparatus according to claim 1. The password stored in the storage means stores a predetermined password or information indicating that a password is automatically generated at random every time an e-mail is transmitted,
When the predetermined password is obtained from the storage unit by the password setting determination unit, the mail generation unit sets the predetermined password for the attached file, while the password setting determination unit sets the storage unit to the storage unit. The mail generation means automatically generates a password at random and sets it for the attached file when acquiring information indicating that the password is automatically generated at random from 2. The information processing apparatus according to 2. Password notification email generating means for generating an email for password notification indicating the password acquired by the password setting determining means;
A password notification e-mail transmission unit that transmits an e-mail for password notification generated by the password notification e-mail generation unit to the destination of the transmission source after the e-mail is transmitted by the server mail transmission unit;
The information processing apparatus according to any one of claims 1 to 3, further comprising:   5. The information processing apparatus according to claim 4, wherein the password notification mail transmission unit transmits the password notification e-mail related to the predetermined password to the destination only at the first transmission time.   The password notification e-mail transmission unit transmits the e-mail for password notification after elapse of a predetermined period since the e-mail for notification of the password related to the predetermined password is transmitted to the destination. Item 6. The information processing device according to Item 5. The storage means stores a password to be set for a file attached to an e-mail corresponding to a combination of e-mail transmission source and destination e-mail addresses,
7. The password setting determination unit acquires a password corresponding to a combination of an e-mail destination and a transmission source received by the server mail receiving unit from a password stored in the storage unit. The information processing apparatus according to any one of the above.   When a plurality of e-mail destinations received by the server mail receiving unit are acquired by the password setting determining unit, the mail generating unit attaches each password acquired by the password setting determining unit to the number of destinations. The information processing apparatus according to claim 1, wherein the information processing apparatus is set for the processed file.   When a plurality of e-mail destinations received by the server mail receiving unit are acquired by the password setting determination unit, the password notification e-mail generation unit indicates the password acquired by the password setting determination unit by the number of destinations. 9. The information processing apparatus according to claim 4, further comprising password notification mail generation means for generating an email for each password notification.   10. The password notification email transmission unit transmits the password notification email generated by the password notification email generation unit to the transmission source and the destination of the transmission destination. The information processing apparatus described in 1.   11. The information processing apparatus according to claim 10, wherein the password notification mail generation unit generates the email different from the password notification email of the transmission source. A destination selection means for selecting whether to send the password notification e-mail to the transmission source, the transmission destination, or the transmission source and the transmission destination;
10. The information processing according to claim 4, wherein the password notification mail transmission unit transmits the password notification e-mail to the destination selected by the destination selection unit. apparatus.   The destination selection means selects whether to send to the transmission source, the transmission destination, or the transmission source and the transmission destination according to the transmission destination of the electronic mail received by the server mail reception means. The information processing apparatus according to claim 12.   The destination selection unit transmits to the transmission source, the transmission destination, or the transmission source and the transmission destination according to the transmission destination and the transmission destination of the email received by the server mail reception unit. The information processing apparatus according to claim 12 or 13, wherein the information processing apparatus selects whether it should be performed. An information processing system in which a plurality of client terminals that transmit and receive e-mail and an information processing apparatus are connected via a network,
The client terminal is
Client mail transmission means for transmitting the e-mail;
Client mail receiving means for receiving the e-mail from server mail transmitting means;
With
The information processing apparatus includes:
Storage means for storing a password to be set in the file attached to the e-mail according to the destination of the e-mail;
Server mail receiving means for receiving e-mail from the client mail sending means;
Password setting determination means for obtaining a password corresponding to the destination of the e-mail received by the server mail receiving means from the password stored in the storage means;
Mail generating means for setting the password acquired by the password setting determining means for the attached file;
Server mail transmission means for transmitting the email generated by the mail generation means to the client terminal identified from the destination of the transmission destination;
An information processing system comprising: A method for controlling an information processing apparatus that performs transmission / reception processing of electronic mail,
Server mail receiving step for receiving e-mail,
Password setting for acquiring a password for setting a password corresponding to the destination of the email received in the server mail receiving step in a file attached to the email from a password stored in a storage unit that stores the password according to the destination of the email Judgment step,
A mail generation step for setting the password acquired in the password setting determination step for the attached file;
A server mail transmission step of transmitting the email generated by the mail generation step to the destination of the destination;
A method for controlling an information processing apparatus, comprising: A program that can be read and executed by an information processing apparatus that performs transmission / reception processing of electronic mail,
Server mail receiving means for receiving e-mail;
Password setting for acquiring a password for setting a password corresponding to the destination of the e-mail received by the server mail receiving unit in a file attached to the e-mail from a password stored in a storage unit that stores the password according to the destination of the e-mail A determination means;
Mail generating means for setting the password acquired by the password setting determining means for the attached file;
Server mail transmission means for transmitting the email generated by the mail generation means to the destination of the transmission destination;
A program characterized by making it function. A method of controlling an information processing system in which a plurality of client terminals that perform transmission and reception of electronic mail and an information processing apparatus are connected via a network,
The client terminal is
A client mail sending step for sending the e-mail;
A client mail receiving step for receiving the e-mail from the server mail sending step;
Including
The information processing apparatus includes:
A server mail receiving step for receiving an e-mail from the client mail sending step;
The password acquired from the password stored in the storage means for storing the password corresponding to the destination of the email received by the server mail receiving step in the file attached to the email according to the destination of the email Setting judgment step,
A mail generation step for setting the password acquired in the password setting determination step for the attached file;
A server mail transmission step of transmitting the email generated by the mail generation step to the client terminal identified from the destination of the transmission destination;
A method for controlling an information processing system comprising: A program that can be read and executed in an information processing system in which a plurality of client terminals that perform transmission and reception of electronic mail and an information processing apparatus are connected via a network,
The client terminal is
Client mail transmission means for transmitting the e-mail;
Client mail receiving means for receiving the e-mail from server mail transmitting means;
To function,
The information processing apparatus;
Server mail receiving means for receiving e-mail from the client mail sending means;
The password acquired from the password stored in the storage means for storing the password corresponding to the destination of the email received by the server mail receiving means in the file attached to the email according to the destination of the email Setting determination means;
Mail generating means for setting the password acquired by the password setting determining means for the attached file;
Server mail transmission means for transmitting the email generated by the mail generation means to the client terminal identified from the destination of the transmission destination;
A program characterized by making it function.

Images