JP2013242853A - Information processing apparatus, information processing system, information processing method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanism that enables an inspection to be conduct properly with respect to an inspection operation for determining the propriety of transmission of an email.SOLUTION: The selection of an email to be inspected is accepted, and the time required for an inspection of the email is calculated. Depending on whether an inspection time for the email by an administrator exceeds the calculated inspection time, the inspection result for the email (whether transmission of the email to be inspected is permitted or not) can be instructed.

Description

  The present invention relates to a technique for appropriately performing an auditing operation for determining whether or not an electronic mail can be transmitted.

  In recent years, leakage of personal information and confidential information has a great influence on corporate trust. Information leakage may occur due to unauthorized access from the outside, but most are caused by carelessness of people inside the company, and information leakage is caused by careless file transmission using e-mail, etc. I sometimes get up.

  Therefore, when an e-mail is sent from an internal network to an external network, measures against information leakage are introduced, such as by introducing an e-mail audit system that decides whether or not to permit delivery according to the content of the e-mail. I have taken.

  In such a system, it is common to control the transmission of an e-mail by setting a keyword or the like and disabling the transmission of mail using the keyword.

  In addition, there is an audit system in which an administrator performs an audit on an electronic mail that cannot be transmitted, and finally determines whether or not to permit transmission based on the audit result.

  In Patent Document 1, when it is determined that the mail is transmitted from the mail address of the mail transmission destination, a list of approvers corresponding to the mail sender is displayed, and the approver is selected and selected. It is disclosed that a mail is placed in a transmission pending state until transmission is approved by an approver.

JP 2007-65787 A

  An administrator who audits such an e-mail is required to make an appropriate determination as to whether or not the e-mail can be actually transmitted.

  If an administrator determines whether or not transmission is possible without performing an appropriate audit, information leakage will occur from the e-mail.

  Therefore, an object of the present invention is to provide a mechanism capable of performing an appropriate audit in an auditing operation for determining whether or not an electronic mail can be transmitted.

The present invention is an information processing apparatus for auditing electronic mail, and calculates a time required for auditing the electronic mail, and accepts selection of an audit target mail to be audited among the electronic mails When the audit time for the selection reception means and the audit target email satisfies the time required for the audit calculated by the calculation means, an instruction to permit transmission of the audit target mail can be received and the audit target If the audit time for the email does not satisfy the time calculated by the calculating means, an instruction accepting means for not accepting an instruction to permit transmission of the audit target mail; and
It is characterized by providing.

  In addition, the present invention is an information processing system in which an information processing device that performs an electronic mail audit and a server device that performs an electronic mail transmission control are communicably connected, and the time required for the electronic mail audit Calculating means for calculating the auditing mail, a selection receiving means for accepting selection of the auditing mail to be audited among the e-mails, and an audit time for the auditing mail is a time required for the audit calculated by the calculating means If it satisfies the condition, it is possible to accept an instruction to permit transmission of the audit target email, and if the audit time for the audit target email does not satisfy the time calculated by the calculating means, And an instruction accepting unit that does not accept an instruction permitting transmission.

  The present invention is also an information processing method in an information processing apparatus that audits an email, wherein the calculation means of the information processing apparatus calculates a time required for the audit of the email, and the information The selection receiving unit of the processing device receives a selection of the audit target mail to be audited from the electronic mail, and the instruction receiving unit of the information processing device has an audit time for the audit target mail, When the time required for the audit calculated in the calculation step is satisfied, an instruction for permitting the transmission of the audit target mail can be accepted, and the audit time for the audit target mail is set to the time calculated in the calculation step. An instruction receiving step that does not allow an instruction to permit transmission of the audit target mail if not satisfied,

  Further, the present invention is a program executable in an information processing apparatus that performs an electronic mail audit, wherein the information processing apparatus calculates a time required for the electronic mail audit; A selection accepting unit that accepts selection of an audit target email to be audited, and transmission of the audit target email if the audit time for the audit target email satisfies the time required for the audit calculated by the calculation unit An instruction is received that does not allow an instruction to permit transmission of the audit target mail when the audit time for the audit target mail does not satisfy the time calculated by the calculation means. It is made to function as a means.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to perform an appropriate audit | inspection in the auditing work which judges the propriety of transmission of an email.

It is a block diagram which shows an example of a structure of the information processing system in this invention. 2 is a diagram illustrating a hardware configuration of a mail transmission / reception terminal 110, an administrator terminal 120, a mail relay apparatus 150, and a mail delivery apparatus 190. FIG. 7 is a flowchart showing an e-mail hold process in the mail relay device 150. It is a flowchart which shows the auditing process with respect to the electronic mail suspended by step S305 of FIG. It is a figure which shows the whole process of a mail transmission system. It is a figure which shows an example of the screen which displays the list | wrist of the email with which transmission was suspended. It is a figure which shows an example of the audit | inspection screen which audits with respect to an email. It is a figure which shows an example of the audit | inspection screen which audits with respect to an email. It is a figure which shows an example of the table in which the transmission suspension condition was set. It is a figure which shows an example of the table in which the mail data of the suspended electronic mail were registered. It is a flowchart which shows the detail of the auditing time determination process of step S405 of FIG. It is a flowchart which shows the detail of the audit time judgment process of FIG.4 S407. It is a flowchart which shows the detail of the audit time judgment process of FIG.4 S407. It is a flowchart which shows the detail of the mail text audit time calculation process of step S1102, and the attached file audit time calculation process of S1105. It is a figure which shows an example of a mail text audit time determination table and an attached file audit time determination table. It is a flowchart which shows the detail of the audit time judgment process of FIG.4 S407. It is a figure which shows an example of the table for determining auditing time using the number of transmission destinations. It is a figure which shows an example of the table for determining auditing time using an important word and an importance level. It is a flowchart which shows the auditing process with respect to the electronic mail suspended by step S305 of FIG. It is a flowchart which shows the detail of the process in step S1906. It is a flowchart which shows the detail of the process in step S1906. It is a functional block diagram which shows an example of the function of the information processing apparatus of this invention, and an information processing system.

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

  FIG. 1 is a block diagram showing an example of the configuration of an e-mail transmission system according to this embodiment.

  As shown in FIG. 1, the e-mail transmission system according to this embodiment includes a mail transmission / reception terminal 110, an administrator terminal 120, a mail relay device 150, and a mail delivery device 190. The mail transmission / reception terminal 110, the administrator terminal 120, the mail relay apparatus 150, and the mail delivery apparatus 190 are connected to each other via a network so as to communicate with each other. FIG. 1 shows one mail transmission / reception terminal 110, but in this embodiment, one or a plurality of mail transmission / reception terminals are connected to the administrator terminal 120, the mail relay device 150, and the mail delivery device 190 via the network. They are connected so that they can communicate with each other.

  An e-mail transmitted from the e-mail transmission / reception terminal 110 is sent to another e-mail (not shown) as the destination via the e-mail relay device 150 and the e-mail delivery device 190 according to the e-mail address set as the e-mail destination. Sent to the terminal.

  A mail transmission / reception terminal 110 that transmits and receives electronic mail is an information processing apparatus in which a user gives various operation instructions. The mail transmission / reception terminal 110 can transmit / receive data to / from the mail relay apparatus 150 via the network. The mail transmission / reception terminal 110 includes a mail creation unit 111, a mail transmission / reception unit 112, and an operation unit 113.

  The mail creation unit 111 has a function of creating and editing an electronic mail by a user operation.

  The mail transmission / reception unit 112 has a function of transmitting an email instructed to be transmitted from the user to the mail relay device 150 and a function of receiving an email from the mail relay device 150.

  The operation unit 113 has a function of receiving a transmission instruction for an electronic mail from a user and transmitting the instruction to the mail transmission / reception unit 112.

  Further, the operation unit 113 has a function of acquiring the date and time (transmission date and time) when the user instructs the mail relay apparatus 150 to send an e-mail, and adding information indicating the acquired transmission date and time to the e-mail.

  The mail transmitting / receiving unit 112 is a functional unit corresponding to a mail client (mail user agent: MUA) compatible with generally known protocols such as SMTP, POP, and IMAP. The operation unit 113 is realized by using a function of a WEB browser corresponding to HTTP or HTTPS, for example.

  The administrator terminal 120 is a terminal that receives an operation from an administrator of the e-mail transmission system in the present embodiment.

  The management operation unit 121 of the administrator terminal 120 has a function of accepting operation instructions from the administrator, such as registration, editing, deletion, and browsing of rules stored in the storage unit (rule storage unit 156) of the mail relay device 150; A function of transmitting an instruction (registration, editing, deletion, browsing, etc.) operated by the administrator to the rule setting unit 154 of the mail relay apparatus 150 is provided.

  The management operation unit 121 has a function of accepting operation instructions from an administrator, such as browsing, deletion, and transmission (relay) of an email held in the storage unit (holding mail storage unit 157) of the mail relay device 150; A function of transmitting an operation instruction (viewing, deleting, sending (relaying, etc.) a suspended electronic mail) received by the administrator to the suspended mail management processing unit 155 is provided.

  The mail relay device 150 applies the rule to the electronic mail transmitted from the mail transmitting / receiving terminal 110, and forwards (relays) the mail to the mail delivery device 190 based on the result.

  The mail relay device 150 includes a mail reception processing unit 151, a rule application processing unit 152, a mail transmission processing unit 153, a rule setting unit 154, and a pending mail management processing unit 155. In addition, the mail relay device 150 includes storage areas for the rule storage unit 156 and the pending mail storage unit 157 in storage means such as the external memory 211.

  The mail reception processing unit 151 has a function of receiving an electronic mail transmitted from the mail transmission / reception unit 112 of the mail transmission / reception terminal 110. As described above, information indicating the transmission date / time is added to the e-mail by the operation unit 113.

  The rule application processing unit 152 applies the rules stored in the rule storage unit 156 to the email received by the mail reception processing unit 151, and executes processing according to the rules.

  The mail transmission processing unit 153 has a function of transmitting an electronic mail to the mail delivery device 190.

  The rule setting unit 154 accepts operation instructions such as registration, editing, deletion, and browsing of rules stored in the rule storage unit 156 from the management operation unit 121 of the administrator terminal 120, and saves rules according to the operation instructions. A function of executing processing such as registration, editing, deletion, and browsing of rules stored in the unit 156 is provided. The rule setting unit 154 is realized by using a function of a WEB server corresponding to HTTP or HTTPS, for example.

  The hold mail management processing unit 155 has a function of transmitting an e-mail held in the hold mail storage unit 157 in accordance with an instruction received from the management operation unit 121 of the administrator terminal 120.

  The rule storage unit 156 is a storage area in which rules used in the rule application processing unit 152 (specifically, transmission suspension conditions shown in FIG. 9) are stored.

  The hold mail storage unit 157 is a storage area for storing an e-mail (specifically, a mail data table shown in FIG. 10) determined to be held by the rule application processing unit 152.

  The mail delivery device 190 is a so-called mail server, and has a function (such as an SMTP server function) for transmitting the e-mail to a destination set in the e-mail transmitted from the mail transmission processing unit 153. . Further, the mail delivery device 190 has a function (such as a function of a POP3 server) that transmits an electronic mail transmitted to the mail transmission / reception terminal 110 to the mail transmission / reception terminal 110 in response to a request from the mail transmission / reception terminal. Also good.

  The mail transmission / reception terminal 110, the administrator terminal 120, the mail relay apparatus 150, and the mail delivery apparatus 190 are computers.

  FIG. 2 is a diagram illustrating a hardware configuration of an information processing apparatus applicable to the mail transmission / reception terminal 110, the administrator terminal 120, the mail relay apparatus 150, and the mail delivery apparatus 190.

  In FIG. 2, reference numeral 201 denotes a CPU that comprehensively controls each device and controller connected to the system bus 204. Further, the ROM 203 or the external memory 211 is necessary to realize a BIOS (Basic Input / Output System) or an operating system program (hereinafter referred to as an OS), which is a control program of the CPU 201, or a function executed by each server or each PC. Various programs are stored.

  A RAM 202 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 from the ROM 203 or the external memory 211 into the RAM 202 and executing the loaded program.

  An input controller 205 controls input from the input device 209 or the like. A video controller 206 controls display on a display device 210 such as a liquid crystal display. The display device is not limited to a liquid crystal display, and may be a CRT display or the like. These are used by clients as needed.

  A memory controller 207 is connected to the hard disk (HD), flexible disk (FD), or PCMCIA card slot for storing a boot program, various applications, font data, user files, editing files, various data, etc. via an adapter. The access to the external memory 211 such as a compact flash (registered trademark) memory is controlled.

  A communication I / F controller 208 connects and communicates with an external device via a network (for example, the LAN 400 shown in FIG. 1), and executes communication control processing in the network. For example, 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 202, for example. Further, the CPU 201 enables a user instruction with a mouse cursor (not shown) on the display device 210.

  Various programs that operate on the hardware are recorded in the external memory 211 and are executed by the CPU 201 by being loaded into the RAM 202 as necessary.

  Next, processing of the entire electronic mail transmission system in the embodiment of the present invention will be described with reference to FIG.

  In step S501, the mail transmitting / receiving terminal 110 transmits an e-mail to the mail relay apparatus 150 in accordance with an instruction from the user.

  When receiving the electronic mail transmitted from the mail transmitting / receiving terminal 110, the mail relay device 150 performs a filtering process on the received electronic mail (step S502). This filtering process is a process of steps S304 to S306 shown in the flowchart of FIG.

  As a result of the filtering process in the mail relay device 150, when the transmission of the electronic mail is suspended, the mail relay device 150 notifies the mail transmission / reception terminal 110 that the electronic mail is suspended (step S503). On the other hand, when transmitting an e-mail, the mail relay device 150 transmits the e-mail to the mail delivery device 190 (step S504).

  In step S505, the administrator terminal 120 requests the mail relay apparatus 150 to audit the electronic mail whose transmission has been suspended (processing to newly determine whether or not the electronic mail whose transmission has been suspended). Then, the mail relay device 150 transmits the email data (FIG. 10) whose transmission is suspended to the administrator terminal 120 (step S505).

  The administrator terminal 120 performs an audit process based on the data transmitted in step S506, and transmits the audit result to the mail relay device 150 (step S507).

If the result of the audit at the administrator terminal 120 indicates that transmission is not possible, the mail relay device 150 notifies the mail transmission / reception terminal 110 that transmission is disabled (step S508). . On the other hand, if the result of the audit at the administrator terminal 120 is that transmission is permitted, the mail relay device 150 transmits the electronic mail permitted to be transmitted to the mail delivery device 190 (step S509).
The above is the overall image of the processing in the embodiment of the present invention.

  Next, the e-mail hold process in the mail relay device 150 will be described with reference to FIG.

  FIG. 3 is a flowchart showing an e-mail hold process in the embodiment of the present invention.

  Note that the processing in steps S301 and S302 in FIG. 3 is processing in which the CPU 201 of the mail transmission / reception terminal 110 reads and executes a predetermined control program.

  Further, the processes in steps S303 to S306 are processes in which the CPU 201 of the mail relay apparatus 150 reads and executes a predetermined control program.

  In step S301, the CPU 201 of the mail transmitting / receiving terminal 110 receives an e-mail transmission instruction from the user.

  In step S <b> 302, the CPU 201 of the mail transmission / reception terminal 110 transmits the electronic mail instructed to be transmitted in step S <b> 301 to the mail relay device 150.

  In step S303, the CPU 201 of the mail relay apparatus 150 receives the electronic mail transmitted from the mail transmission / reception terminal in step S302.

  In step S304, the CPU 201 of the mail relay device 150 determines whether or not the electronic mail received in step S303 meets a predetermined hold condition.

Specifically, using the transmission suspension condition (FIG. 9) stored in the rule storage unit of the mail relay device 150, it is determined whether or not the email received in step S303 meets the condition.
The transmission hold condition in FIG. 9 will be described.

  In the transmission suspension condition shown in FIG. 9, five transmission suspension conditions from condition 1 to condition 5 are set.

  Condition 1 is a condition indicating that transmission is suspended for an electronic mail whose transmission destination includes “@ *** 1.co.jp” (predetermined domain name).

  Condition 2 is a condition indicating that transmission is suspended when the size of an electronic mail is 1.5 MB or more.

  Condition 3 is a condition indicating that transmission is suspended when the extension of a file attached to an e-mail is “.ppt”.

  Condition 4 is a condition indicating that transmission is suspended when the text of the email includes the character string “xx company”.

  Condition 5 is that when “@ *** 2.co.jp” (predetermined domain name) is included in the destination of the e-mail and the character string “confidential” is included in the data of the attached file. Is a condition indicating that transmission is suspended.

  In step S304, the CPU 201 of the mail relay apparatus 150 determines whether the electronic mail received in step S303 meets any of the above-described conditions.

  Note that the holding condition shown in FIG. 9 is merely an example, and conditions other than these five conditions can be freely set.

  If it is determined in step S304 that any of the hold conditions is met (step S304: YES), the process proceeds to step S305.

  If it is determined in step S304 that none of the hold conditions is met (step S304: NO), the process proceeds to step S306.

  In step S305, the CPU 201 of the mail relay device 150 stores the e-mail that has been determined to match the hold condition in step S304 in the hold mail storage unit 157 (the mail data table shown in FIG. 10 is stored in the hold mail storage unit 157). This is a table showing saved pending mail). That is, the electronic mail is not transmitted immediately, but is suspended for auditing by the administrator. At this time, the sender may be notified that the transmission is suspended.

  In step S <b> 306, the CPU 201 of the mail relay device 150 transmits the e-mail that is determined not to meet the hold condition in step S <b> 304 to the mail delivery device 190.

  Through the above processing, an e-mail that matches a preset condition can be temporarily suspended to be audited by the administrator without being transmitted as it is.

  Next, the auditing process for the electronic mail whose transmission is suspended in step S305 will be described with reference to FIG.

  FIG. 4 is a flowchart showing an audit process for a suspended electronic mail according to the embodiment of the present invention.

  Note that the processing shown in the flowchart of FIG. 4 is processing in which the CPU 201 of the administrator terminal 120 reads and executes a predetermined control program.

  In step S401, the CPU 201 of the administrator terminal 120 receives an instruction from the administrator to audit electronic mail.

  Upon receiving an e-mail audit instruction from the administrator, in step S402, the CPU 201 of the administrator terminal 120 acquires mail data (FIG. 10) of the hold mail stored in the hold mail storage unit 157 of the mail relay device 150. To do.

  In step S403, the CPU 201 of the administrator terminal 120 displays a hold mail list screen (FIG. 6) based on the mail data of the hold mail acquired in step S402.

  In step S404, the CPU 201 of the administrator terminal 120 accepts selection of an email to be audited by the administrator via the pending email list screen.

  In step S405, the CPU 201 of the administrator terminal 120 determines the time required for sufficient auditing of the e-mail selected by the administrator in step S404. Details of this process will be described later with reference to the flowchart shown in FIG.

  In step S406, the CPU 201 of the administrator terminal 120 displays an audit screen (FIG. 7) for auditing the email selected by the administrator in step S404.

  In step S407, the CPU 201 of the administrator terminal 120 determines whether or not the text of the email and the attached file have been audited for a sufficient time on the audit screen displayed in step S406. Details of this processing will be described later with reference to flowcharts shown in FIGS.

  In step S408, the CPU 201 of the administrator terminal 120 displays a transmission button (a button for giving an instruction to permit transmission) on the audit screen displayed in step S406. Note that the transmission button may be displayed in advance at the timing of step S408, but may be displayed in advance but cannot be pressed, and may be changed to be pressed at the timing of step S408.

In any case, when the processing of the flowcharts shown in FIGS. 12, 13, and 16 is finished,
Any configuration that can issue a transmission permission instruction may be used.

  In step S409, the CPU 201 of the administrator terminal 120 receives an instruction for an electronic mail (audit target mail) that is an audit target from the administrator. Specifically, an instruction as to whether transmission is permitted or not permitted is received for an electronic mail subject to audit.

  In step S410, the CPU 201 of the administrator terminal 120 determines the content instructed by the administrator in step S409.

  If the content of the instruction is to permit transmission (step S410: transmission permission), the process proceeds to step S411.

  When the content of the instruction indicates that transmission is not permitted (step S410: transmission is not possible), the process proceeds to step S412.

  In the present embodiment, as an example of processing for a suspended electronic mail, the administrator is configured to accept either an instruction to permit or not to transmit. The processing (instruction) for the e-mail is not limited to transmission permission / non-permission instruction, but may be configured to accept other processing instructions (such as extension or shortening of the holding time).

  In step S411, the CPU 201 of the administrator terminal 120 transmits to the mail relay device 150 an instruction to transmit the email for which the audit has been performed.

  In step S <b> 412, the CPU 201 of the administrator terminal 120 transmits an instruction to the email relay device 150 to delete the audited email from the pending email storage unit 157 of the email relay device 150.

  Although not shown, when a mail deletion instruction is issued in step S412, a notification that transmission is not permitted is sent to the sender of the deleted mail.

  Next, details of the processing in step S405 in the flowchart of FIG. 4 will be described with reference to FIG.

  FIG. 11 is a flowchart showing a process for determining the time required for auditing the text and attached file of an e-mail according to the embodiment of the present invention.

  Note that the process shown in the flowchart of FIG. 11 is a process in which the CPU 201 of the administrator terminal 120 reads and executes a predetermined control program.

  In step S1101, the CPU 201 of the administrator terminal 120 extracts the text and attached file from the email selected as the audit target in step S404.

  In step S1102, a time for sufficiently confirming all of the electronic mail text is calculated.

  As a method for calculating the time for sufficiently confirming the entire e-mail body, for example, a method of measuring the number of characters in the body and using a time proportional to the number of characters can be considered. Details will be described later with reference to FIG.

  In step S1103, the time calculated in step S1102 is held as the minimum audit time of the text.

  In step S1104, it is determined whether there is an unprocessed attachment file among the attachment files acquired in step S1101.

  If it is determined in step S1104 that there is an unprocessed attached file (step S1104: YES), the process proceeds to step S1105.

  If it is determined in step S1104 that there is no unprocessed attached file (step S1104: NO), the process of this flowchart is terminated.

  In step S1105, one unprocessed attachment file is selected, and the time for which the attachment file can be sufficiently confirmed is calculated.

  As a method of calculating the time for sufficiently confirming all of the attached files, for example, a method of measuring the file size and using a time proportional to the file size can be considered. Details will be described later with reference to FIG.

  In step S1106, the time calculated in step S1105 is held as the minimum audit time of the attached file.

  Thereafter, the process proceeds to step S1104, and the process is repeated.

  Next, the first embodiment of the process of step S407 in the flowchart of FIG. 4 will be described with reference to FIG.

  FIG. 12 is a flowchart showing a process for determining whether or not the audit time for the text of the electronic mail and the attached file is sufficient in the embodiment of the present invention.

  Note that the processing shown in the flowchart of FIG. 12 is processing in which the CPU 201 of the administrator terminal 120 reads and executes a predetermined control program.

  In step S1201, the CPU 201 of the administrator terminal 120 checks the audit start time (the time when the administrator can audit the e-mail, such as the time when the audit screen is displayed. A button to be accepted is prepared, and a time obtained by adding the minimum audit time of the text held in step S1103 to the time when the button is pressed by the administrator is calculated, and is stored as the earliest audit completion time.

  In step S1202, it is determined whether there is an undownloaded attached file among the attached files acquired in step S1101.

  If it is determined in step S1202 that there is an undownloaded attached file (step S1202: YES), the process proceeds to step S1203.

  If it is determined in step S1202 that there is no undownloaded attached file (step S1202: NO), the process proceeds to step S1208.

  In step S1203, it is determined whether the attached file download link (705 in FIG. 7) on the audit screen displayed in step S406 has been clicked.

  If it is determined in step S1203 that the link has been clicked (step S1203: YES), the process proceeds to step S1204.

  If it is determined in step S1203 that the link has not been clicked (step S1203: NO), the process of step S1203 is repeated.

  In step S1204, a download process for browsing the attached file corresponding to the download link clicked in step S1203 on the administrator terminal 120 is performed.

  In step S1205, a time obtained by adding the minimum audit time (held in step S1106) of the attached file corresponding to the download link clicked in step S1203 to the current time is calculated and held as the attached file audit completion time.

  In step S1206, it is determined whether the attached file audit completion time held in step S1205 is later than the earliest audit completion time currently held.

  If it is determined in step S1206 that it is a later time (step S1206: YES), the process proceeds to step S1207.

  If it is determined in step S1206 that it is not a later time (step S1206: NO), the process proceeds to step S1202.

  In step S1207, the attached file audit completion time held in step S1205 is held as a new earliest audit completion time.

  Thereafter, the process proceeds to step S1202, and the process is repeated.

  In step S1208, it is determined whether the current time is before the earliest audit completion time currently held.

  If it is determined in step S1208 that the previous time is reached (step S1208: YES), the process of step S1208 is repeated.

  If it is determined in step S1208 that it is not the previous time (step S1208: NO), the processing of this flowchart ends.

  As a result of the above processing, if the body of the email and all attached files are not audited for the time required for the audit, an instruction such as permission to send cannot be issued to the audit target email. As a result, it is possible to cause the administrator to perform an appropriate audit.

  Next, a second embodiment of the process of step S407 in the flowchart of FIG. 4 will be described using FIG.

  FIG. 13 is a flowchart showing a process for determining whether or not the audit time for the body of the electronic mail and the attached file is sufficient in the embodiment of the present invention.

  Note that the process shown in the flowchart of FIG. 13 is a process in which the CPU 201 of the administrator terminal 120 reads and executes a predetermined control program.

  In step S1301, the CPU 201 of the administrator terminal 120 calculates a time obtained by adding the minimum audit time of the text held in step S1103 to the audit start time, and holds that as the earliest audit completion time.

  In step S1302, it is determined whether there is an unprocessed attachment file among the attachment files acquired in step S1101.

  If it is determined in step S1302 that there is an unprocessed attached file (step S1302: YES), the process proceeds to step S1303.

  If it is determined in step S1302 that there is no unprocessed attached file (step S1302: NO), the process proceeds to step S2204.

  In step S1303, one unprocessed attachment is selected, and a time obtained by adding the minimum audit time of the attached file (held in step S1106) to the earliest audit completion time currently held is calculated, Store as the earliest audit completion time.

  Thereafter, the process proceeds to step S1302, and the processes in steps S1302 and S1303 are repeated.

  In step S1304, it is determined whether there is an undownloaded attached file among the attached files acquired in step S1101.

  If it is determined in step S1304 that there is an undownloaded attached file (step S1304: YES), the process proceeds to step S1305.

  If it is determined in step S1304 that there is no undownloaded attached file (step S1304: NO), the process proceeds to step S1307.

  In step S1305, it is determined whether or not the attached file download link (705 in FIG. 7) on the audit screen displayed in step S406 has been clicked.

  If it is determined in step S1305 that the link has been clicked (step S1305: YES), the process proceeds to step S1306.

  If it is determined in step S1305 that the link has not been clicked (step S1305: NO), the process of step S1305 is repeated.

  In step S1306, a download process (display process) for browsing the attached file corresponding to the download link clicked in step S1305 on the administrator terminal 120 is performed.

  Thereafter, the process proceeds to step S1304, and the process is repeated.

  In step S1307, it is determined whether or not the current time is before the earliest audit completion time currently held.

  If it is determined in step S1307 that it is the previous time (step S1307: YES), the process of step S1307 is repeated.

  If it is determined in step S1307 that it is not the previous time (step S1307: NO), the processing of this flowchart ends.

If the total time required for auditing the email body and all attached files is not spent for the audit, the administrator issues an instruction to allow the email to be sent. I can't. With such a mechanism, it is possible to allow the administrator to perform an appropriate audit.
Next, the data table shown in FIG. 10 will be described.

  FIG. 10 is a mail data table showing e-mails whose transmission is suspended by the mail relay device 150 in step S305.

  The mail data table shown in FIG. 10 includes a mail ID of an electronic mail whose transmission is suspended, each data constituting the electronic mail (transmission date and time, sender address, transmission destination address (To, Cc, Bcc), group information, A mail text, an attached file, etc. and a filtering result are stored in association with each other.

  Next, an example of details of the processing in steps S1102 and S1105 in the flowchart of FIG. 11 will be described with reference to FIG.

  FIG. 14A is a flowchart showing processing (S1102) for calculating the time required for auditing the body of the e-mail according to the embodiment of the present invention.

  FIG. 14B is a flowchart showing processing (S1105) for calculating the time required for auditing the file attached to the e-mail according to the embodiment of the present invention.

  Note that the processing shown in the flowchart of FIG. 14 is processing in which the CPU 201 of the administrator terminal 120 reads and executes a predetermined control program.

  In step S <b> 1401, the CPU 201 of the administrator terminal 120 determines the data amount of the text of the email that is the audit target.

  In step S1402, the CPU 201 of the administrator terminal 120 determines the time required to audit the text of the e-mail based on the data amount determined in step S1401. Specifically, it is determined using the table shown in FIG. For example, in the example shown in FIG. 15A, the data size of the text indicates that one minute is required for auditing per 1.5 kilobytes.

  With the above processing, it is possible to determine the time required to audit the electronic mail text.

  Next, processing for determining a time required for auditing a file attached to an e-mail will be described with reference to FIG.

  In step S1403, the CPU 201 of the administrator terminal 120 determines the file format of the file attached to the audit target electronic mail.

  In step S1404, the CPU 201 of the administrator terminal 120 determines the data amount of the file attached to the audit target electronic mail.

  In step S1405, the CPU 201 of the administrator terminal 120 determines the time required for auditing the attached file based on the file format determined in step S1403 and the data amount determined in step S1404. Specifically, it is determined using the table shown in FIG. For example, in the example shown in FIG. 15B, when the file format is “txt” (text file), it indicates that a time of 1 minute is required per 1 kilobyte of data size.

  With the above processing, it is possible to determine the time required to audit the file attached to the e-mail.

  In this embodiment, the time required for the audit is determined based on the data amount of the body text and the attached file. For example, the audit time per character or a predetermined number of characters is registered, and the number of characters is also registered. In addition, the time required for the audit may be determined. Alternatively, the audit time per e-mail transmission destination may be registered (FIG. 17), and the time required for the audit may be determined based on the number of transmission destinations. Alternatively, the audit time may be registered for each predetermined keyword (FIG. 18), and may be determined based on the keyword, the audit time registered for each keyword, and the number of the keywords included.

  Next, a third embodiment of the process of step S407 in the flowchart of FIG. 4 will be described with reference to FIG.

  FIG. 16 is a flowchart showing a process for determining whether or not the audit time for the body of the electronic mail and the attached file is sufficient in the embodiment of the present invention.

  Note that the processing shown in the flowchart of FIG. 16 is processing in which the CPU 201 of the administrator terminal 120 reads and executes a predetermined control program.

  In step S1601, the CPU 201 of the administrator terminal 120 determines whether there is a file that has not been downloaded among the files attached to the electronic mail to be audited.

  When there is a file that has not been downloaded (step S1601: YES), a download instruction for the attached file is received, and when the download instruction is received, a download process is executed (step S1602).

  If there is no file that has not been downloaded (step S1601: NO), the process proceeds to step S1605.

  In step S1603, the CPU 201 of the administrator terminal 120 acquires the downloaded file and the audit time of the file (the time calculated in step S1105), and associates and holds the file and the audit time in step S1604. . Then, the process returns to step S1601.

  In step S1605, the CPU 201 of the administrator terminal 120 acquires the display time of the file attached to the audit target electronic mail for each file. As a file display time, a time during which the file is in an active state may be acquired.

  In step S1606, the CPU 201 of the administrator terminal 120 compares the time acquired in step S1605 with the time acquired in step S1603, and if the time acquired in step S1605 is greater than or equal to the time acquired in step S1603 (step S1606). : YES) The process proceeds to step S1607. That is, if the file has been displayed for a time longer than the time required to audit the attached file, the process proceeds to step S1607.

  In step S1607, the CPU 201 of the administrator terminal 120 determines whether or not YES is determined in step S1606 for all files attached to the audit target electronic mail.

  If all files are determined to be YES in step S1606, it can be determined that all the files have been properly audited, and therefore the processing of this flowchart ends.

  As a result of the above processing, the administrator cannot issue an instruction for permission to send the e-mail unless the files attached to the e-mail are audited for a necessary time.

  With such a mechanism, it is possible to allow the administrator to perform an appropriate audit.

  Next, an embodiment in which the process shown in FIG. 4 is executed by a system including the administrator terminal 120 and the mail relay device 150 will be described with reference to FIG.

  Note that the processing shown in the flowchart of FIG. 19 is processing in which the CPU 201 of the administrator terminal 120 or the CPU 201 of the mail relay device 150 reads and executes a predetermined control program.

  In step S1901, the CPU 201 of the administrator terminal 120 receives an instruction from the administrator to audit electronic mail. Then, the accepted audit instruction is transmitted to the mail relay device 150.

  In step S1902, the CPU 201 of the administrator terminal 120 acquires a list of suspended mail data (FIG. 10) transmitted from the mail relay device 150.

  In step S1903, the CPU 201 of the administrator terminal 120 displays a list of pending emails on a display unit such as a display based on the pending email data acquired in step S1902 (an example of a pending email list screen is shown in FIG. 6). ).

  In step S1904, the CPU 201 of the administrator terminal 120 accepts selection of an electronic mail (audit target mail) to be audited via the pending mail list screen by the administrator. Then, information indicating the e-mail for which the selection has been received is transmitted to the mail relay device 150.

  In step S1905, the CPU 201 of the administrator terminal 120 displays on the display unit an audit screen for auditing the electronic mail (audit target mail) received in step S1904. An example of the audit screen is shown in FIG.

  In step S1906, the CPU 201 of the administrator terminal 120 calculates the time when the administrator audited the audit target mail. The details of this process are the processes shown in the flowcharts of FIGS.

  Here, the flowchart shown in FIG. 20 will be described. The flowchart shown in FIG. 20 is a process in which the CPU 201 of the administrator terminal 120 reads and executes a predetermined program.

  In step S2001, the CPU 201 of the administrator terminal 120 determines whether an attached file exists in the audit target mail (whether the file is attached).

  If there is an attached file (step S2001: YES), the process proceeds to step S2002.

  If there is no attached file (step S2001: NO), the process proceeds to step S2004.

  In step S2002, the CPU 201 of the administrator terminal 120 determines whether all the files attached to the audit target mail have been acquired (downloaded).

  If all the attached files have been acquired (step S2002: YES), the process proceeds to step S2004.

  When there is an attached file that has not been acquired (step S2002: NO), the process proceeds to step S2003.

  In step S2003, the CPU 201 of the administrator terminal 120 receives an attachment file acquisition request from the administrator.

  In step S2004, the CPU 201 of the administrator terminal 120 acquires the time from when the audit screen is displayed in step S1905. The time acquired here is transmitted to the mail relay apparatus 150 in step S1907 as “audit time”.

  With the processing in FIG. 20, it is possible to acquire the time during which the administrator audited the audit target mail. Further, if all the attached files are not acquired, it is possible to prevent omission of confirmation of the attached files by adopting a configuration in which the audit time is not acquired.

  Next, the flowchart shown in FIG. 21 will be described. The flowchart shown in FIG. 21 is a process in which the CPU 201 of the administrator terminal 120 reads and executes a predetermined program.

  In step S2101, the CPU 201 of the administrator terminal 120 determines whether an attached file exists in the audit target mail.

  If there is an attached file (step S2101: YES), the process proceeds to step S2102.

  If there is no attached file (step S2101: NO), the process proceeds to step S2105.

  In step S2102, the CPU 201 of the administrator terminal 120 accepts an attachment file acquisition request.

  In step S2103, the CPU 201 of the administrator terminal 120 acquires the time during which the attached file acquired in step S2103 was displayed. The time displayed here is the time when the application displaying the attached file (window for displaying the file) is active and the file is open. Thus, the audit time (displayed time) is acquired for each attached file. The audit time for each attached file acquired here is transmitted to the mail relay device 150 in step S1907.

  In step S2104, the CPU 201 of the administrator terminal 120 determines whether all files among the files attached to the audit target mail have been acquired by the administrator.

  If all files have been acquired (step S2104: YES), the processing shown in this flowchart is terminated.

  If there is an attached file that has not been acquired (step S2104: NO), the process proceeds to step S2102.

  In step S2105, the CPU 201 of the administrator terminal 120 acquires the time when the text of the audit target mail is displayed. The time acquired here is transmitted to the mail relay device 150 in step S1907 as “audit time”.

  As described above, according to the processing of FIG. 21, the time when the text of the audit target mail is displayed and the time when the file is displayed for each attached file can be acquired.

  Then, through the processing in step S1915 described later, it is determined whether sufficient auditing has been performed for each attached file and body. This makes it possible to implement appropriate auditing.

  In step S1907, the CPU 201 of the administrator terminal 120 transmits the time when the administrator audits the audit target mail (the audit time calculated in step S1906) to the mail relay apparatus 150.

  Here, the audit time is periodically calculated (for example, every second, every unit time such as every minute, or every preset time) (step S1906), and the calculated audit is performed. The time is transmitted to the mail relay device 150 (step S1907). That is, the processes in steps S1906 and S1907 are repeated until it is determined in step S1915 that the audit time is sufficient.

  In step S1908, in response to receiving the button display instruction transmitted from the mail relay device 150, the CPU 201 of the administrator terminal 120 displays a transmission permission button (indicating that transmission of the audit target mail is permitted) on the audit screen. Button for instructing this). Note that the transmission permission button may not be displayed at the timing of the processing in step S1908. For example, a method may be used in which the information is displayed in advance but cannot be pressed, and is changed to be pressable in the process of step S1908.

  FIG. 8 shows an example in which the transmission permission button (802) is displayed so as to be pressed as a result of the processing in step S1908.

  In step S <b> 1909, the CPU 201 of the administrator terminal 120 receives an instruction for an electronic mail to be audited from the administrator. Specifically, an instruction as to whether or not to permit transmission of the audit target mail is accepted. When the mail transmission button (802) shown in FIG. 8 is pressed, it is determined that the instruction is to permit transmission. When the mail delete button (803) shown in FIG. 8 is pressed, it is determined that the instruction is not allowed to be transmitted.

Then, the received instruction is transmitted to the mail relay device 150.
Then, the process shown in this flowchart is terminated.

  Next, processing performed by the CPU 201 of the mail relay device 150 in the processing illustrated in FIG. 19 will be described.

  In step S1910, the CPU 201 of the mail relay apparatus 150 receives the audit instruction transmitted from the administrator terminal 120 in step S1901.

  In step S <b> 1911, the CPU 201 of the mail relay device 150 responds to the reception of the audit instruction in step S <b> 1910 and transmits a list of held mails stored in the held mail storage unit 157 to the administrator terminal 120.

  In step S1912, the CPU 201 of the mail relay apparatus 150 receives information indicating the audit target mail transmitted from the administrator terminal 120 in step S1904.

  In step S1913, the CPU 201 of the mail relay apparatus 150 determines an audit time required for auditing the audit target mail. The process shown in the flowchart of FIG. 11 is the details of the process of step S1913. In the present embodiment, the contents of the processing in FIG. 11 described above are performed by the CPU 201 of the mail relay device 150. Since the content of the process is the same as the content described above, a description thereof is omitted here.

  In step S1914, the CPU 201 of the mail relay apparatus 150 receives the audit time (time when the administrator audited the audit target mail) transmitted from the administrator terminal 120 in step S1907.

  In step S1915, the CPU 201 of the mail relay apparatus 150 compares the audit time acquired in step S1914 with the time required to audit the audit target mail calculated in step S1913, and the administrator audits it. Determine if the time is sufficient.

  Specifically, for example, the case where the process of step S1906 is the process of the flowchart shown in FIG. 20 will be described. In this case, determination may be made based on whether or not the time acquired in step S1914 is longer than the total time calculated in step S1913 (the total time held in step S1103 and the time held in step S1106). Is possible. That is, if the time acquired in step S1914 is longer than the total time calculated in step S1913, it is determined that sufficient auditing has been performed (step S1915: YES). On the other hand, if the time acquired in step S1914 is shorter than the total time calculated in step S1913, it is determined that sufficient auditing has not yet been performed (step S1915: NO).

  Alternatively, the determination may be made by comparing the time calculated in step S1102 and the longest time calculated in step S1105 with the time acquired in step S1914.

  On the other hand, the case where the process of step S1906 is the process of the flowchart shown in FIG. 21 will be described. In this case, the time for displaying the attached file is acquired for each attached file. As for the text, the time during which the text was displayed is acquired.

  Therefore, also in the process of step S1915, the time calculated in step S1102 is compared with the time acquired in step S2103. Also, the time calculated in step S1105 is compared with the time acquired in step S2102. When the time required for the audit is satisfied for the main text and all the attached files, it is determined that the audit time is sufficient.

  If it is determined that the audit time is sufficient (step S1915; YES), the process proceeds to step S1916.

  If it is determined that the audit time is not sufficient (step S1915; NO), the process returns to step S1914. Then, the time when the administrator performs the audit again is acquired from the administrator terminal 120, and it is determined whether the audit time is sufficient (step S1915).

  In step S1916, the CPU 201 of the mail relay apparatus 150 transmits a button display instruction to the administrator terminal 120 to display a button for accepting a transmission permission instruction.

  In step S1917, the CPU 201 of the mail relay apparatus 150 receives the instruction transmitted from the administrator terminal 120 in step S1909.

  In step S1918, the CPU 201 of the mail relay apparatus 150 determines whether the content of the instruction received in step S1917 is an instruction to permit transmission or an instruction to not allow transmission.

  If the content of the instruction is to permit transmission (step S1910: transmission permission), the process proceeds to step S1919.

  If the content of the instruction is that transmission is not permitted (step S1910: transmission is not possible), the process proceeds to step S1920.

  In the present embodiment, as an example of processing for a suspended electronic mail (e-mail that has received an instruction as an audit target), an instruction to permit or prohibit transmission is received from the administrator. The instruction for the mail is not limited to a transmission permission or transmission non-permission instruction, and may be configured to accept any process such as extending the holding time, shortening the holding time, or notifying the sender.

  In step S1919, the CPU 201 of the mail relay apparatus 150 transmits the audited electronic mail (the electronic mail that has received the instruction in step S1909) to the transmission destination set in the electronic mail.

  In step S1920, the CPU 201 of the mail relay apparatus 150 deletes the audited electronic mail (the electronic mail whose instruction has been received in step S1909) from the pending mail storage unit 157 of the mail relay apparatus 150.

If the instruction received in step S1909 is a mail deletion instruction, a notification is sent to the sender of the deleted electronic mail that transmission is not permitted.
Then, the process shown in this flowchart is terminated.

  With the above configuration, in audit work that determines whether emails can be sent or not, it is not possible to permit sending unless the contents of the email are confirmed by the administrator, so appropriate auditing is realized. And information leakage can be reduced.

  Further, even when a plurality of files are attached to the audit target electronic mail, it is possible to appropriately calculate the time required for the audit.

  Next, an example of the function of the information processing apparatus according to the present invention will be described with reference to FIG.

  The calculation unit 2201 has a function of calculating a time necessary for auditing an electronic mail. Here, the time required for the audit can be calculated separately for the time required for auditing the body of the email and the time required for auditing the file attached to the email. . For example, a method for calculating the time required for auditing the text based on the data size and the number of characters of the text can be considered. For example, a method of calculating the time required for the audit of the attached file based on the format and the data size of the attached file can be considered. For example, the number of characters in the attached file may be used. Alternatively, the calculation may be performed based on the number of pages of the attached file.

  The selection receiving unit 2202 has a function of receiving selection of an email to be audited from an administrator. For example, when an administrator selects from an e-mail list screen (for example, clicks with a mouse pointer), selection of an e-mail to be audited is accepted.

  When the audit time for the audit target electronic mail (audit target mail) satisfies the time calculated by the calculation unit 2201, the instruction reception unit 2203 can receive an instruction to permit transmission of the audit target mail. When the time calculated by the calculation unit 2201 is not satisfied, a function is provided to control not to accept an instruction to permit transmission of the audit target mail.

  In addition, when a file attached to an audit target email is audited, an instruction to permit transmission of the audit target email is accepted, and when a file attached to the audit target email is not audited, A function is provided to control not to accept an instruction to permit transmission of the audit target mail.

  The determination unit 2204 has a function of determining whether or not the audit time for the audit target mail satisfies the time required for the audit calculated by the calculation unit 2201.

  Here, the audit time may be, for example, the time when the audit target mail is displayed on the audit screen. Alternatively, it may be the time after the audit target mail is selected. Alternatively, it may be an elapsed time after the administrator gives an instruction to start the audit. In any case, any time may be used as long as the time allowed for the administrator to audit the audit target mail.

  Whether or not the time required for the audit is satisfied is, for example, the time when the audit target email is audited, the time required for auditing the body of the audit target email calculated by the calculation unit 2201, and the audit target email attached It can be determined by whether or not the total time with the time required for auditing the file is satisfied. Further, the determination can be made based on whether the time required for auditing the body of the audit target mail and the time required for auditing the file attached to the audit target mail, whichever is longer, is satisfied. In addition, the time that has elapsed since the display of the audit screen for auditing the audit target email is displayed satisfies the time required for auditing the body of the audit target email, and the attached file of the audit target email is opened. It can be determined whether or not the time elapsed since the time satisfies the time required for auditing the attached file.

  The file audit determination unit 2205 has a function of determining whether auditing has been performed on a file attached to an audit target mail.

  It should be noted that the configuration and contents of the various data described above are not limited to this, and it goes without saying that the various data and configurations are configured according to the application and purpose.

  Moreover, the program in this invention is a program which a computer can perform the processing method of FIGS. 3-4 and FIGS. 11-14. In addition, the program in this invention may be a program for every processing method of each apparatus of FIGS. 3-4 and FIGS. 11-14.

  As described above, a recording medium that records a program that implements the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU or MPU) of the system or apparatus stores the program stored in the recording medium. It goes without saying that the object of the present invention can also be achieved by reading and executing.

  In this case, the program itself read from the recording medium realizes the novel function of the present invention, and the recording medium recording 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 (operating system) operating on the computer based on an instruction of the program is actually It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the processing and the processing is 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.

  The present invention may be applied to a system constituted by a plurality of devices or an apparatus constituted by a single device. 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.

110 Mail transmission / reception terminal 120 Administrator terminal 150 Mail relay device 190 Mail delivery device

Claims (12)

An information processing apparatus for auditing electronic mail,
A calculation means for calculating a time required for the audit of the e-mail;
A selection receiving means for receiving a selection of an audit target mail to be audited among the emails;
If the audit time for the audit target email satisfies the time required for the audit calculated by the calculation means, an instruction to permit transmission of the audit target email can be accepted, and the audit time for the audit target email is received. If the time calculated by the calculating means is not satisfied, an instruction receiving means that does not allow an instruction to permit transmission of the audit target mail; and
An information processing apparatus comprising: A determination unit for determining whether or not the audit time for the audit target email satisfies a time required for the audit calculated by the calculation unit;
The determination means determines whether or not the time when the audit target mail is displayed on the audit screen satisfies a time required for auditing the audit target mail calculated by the calculation means. The information processing apparatus according to claim 1. File audit determination means for determining whether a file attached to the audit target mail is audited,
The instruction receiving means further includes
When it is determined that the file attached to the audit target mail is audited by the file audit determination means, it is possible to accept an instruction to permit transmission of the audit target mail and attached to the audit target mail. The information processing apparatus according to claim 1, wherein when it is determined that the file has not been audited, an instruction to permit transmission of the audit target mail is not accepted. The calculating means further calculates a time required for auditing the body of the audit target mail and a time required for auditing the attached file of the audit target mail,
The determination unit further includes an audit time for the audit target email, a time required for auditing the body text of the audit target email calculated by the calculation unit, and a time required for auditing an attachment file of the audit target email. 4. The information processing apparatus according to claim 2, wherein it is determined whether or not the total time is satisfied.   The determination unit determines whether or not a time period in which a window for displaying a file attached to the audit target mail is in an active state satisfies a time period required for auditing the attached file calculated by the calculation unit. The information processing apparatus according to claim 4.   The determination unit is configured such that the audit time for the audit target email is either the time required for auditing the body text of the audit target email calculated by the calculation unit or the time required for auditing the attached file of the audit target email. 6. The information processing apparatus according to claim 4, wherein it is determined whether or not the longer time is satisfied.   The determination unit further satisfies a time required for the audit of the body of the audit target mail after the display of the audit screen for auditing the audit target mail is displayed, and the audit target mail 7. The information processing apparatus according to claim 4, further comprising: determining whether or not a time elapsed after opening the attached file satisfies a time required for auditing the attached file. .   The information processing apparatus according to claim 1, wherein the calculation unit calculates a time required for auditing the text of the audit target mail based on a data size of the text.   9. The calculation unit according to claim 1, wherein the calculation unit calculates a time required for auditing the attached file of the audit target mail based on a file format and a data size of the attached file. Information processing device. An information processing system in which an information processing device that audits an email and a server device that controls transmission of the email are communicably connected,
A calculation means for calculating a time required for the audit of the e-mail;
A selection receiving means for receiving a selection of an audit target mail to be audited among the emails;
If the audit time for the audit target email satisfies the time required for the audit calculated by the calculation means, an instruction to permit transmission of the audit target email can be accepted, and the audit time for the audit target email is received. If the time calculated by the calculating means is not satisfied, an instruction receiving means that does not allow an instruction to permit transmission of the audit target mail; and
An information processing system comprising: An information processing method in an information processing apparatus for auditing electronic mail,
A calculation step in which the calculation means of the information processing apparatus calculates a time required for auditing the e-mail;
A selection receiving step of receiving a selection of an audit target mail to be audited among the electronic mails, wherein the selection receiving means of the information processing apparatus;
The instruction receiving unit of the information processing apparatus can receive an instruction to permit transmission of the audit target mail when the audit time for the audit target mail satisfies the time required for the audit calculated in the calculation step. And an instruction reception step that does not allow an instruction to permit transmission of the audit target email when the audit time for the audit target email does not satisfy the time calculated in the calculation step;
An information processing method comprising: A program that can be executed by an information processing apparatus that audits an email,
The information processing apparatus;
A calculation means for calculating a time required for the audit of the e-mail;
A selection receiving means for receiving a selection of an audit target mail to be audited among the emails;
If the audit time for the audit target email satisfies the time required for the audit calculated by the calculation means, an instruction to permit transmission of the audit target email can be accepted, and the audit time for the audit target email is received. When the time calculated by the calculating unit is not satisfied, the program functions as an instruction receiving unit that does not allow an instruction to permit transmission of the audit target mail.

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