JP6493382B2 - Information processing apparatus, control method, and program - Google Patents

Description

  The present invention relates to e-mail relay control.

  As a measure to prevent erroneous email transmission, delete the file attached to the email, store it in a storage device, etc., send the email, and then convert the information that is the storage location of the attached file to a URL There is a technique for notifying by e-mail (see, for example, Patent Document 1).

Japanese Patent No. 4327201

  Recently, as a countermeasure against targeted attack mail, a technique related to detoxification of mail that delivers an e-mail after deleting an attached file used for the attack has begun to spread.

  In mail detoxification, for example, in a system configuration that separates the LGWAN connection environment and the Internet connection environment, after confirming the safety and necessity by viewing the detoxification mail on a certain PC, the corresponding original mail is sent Check with another PC.

  If you want to check the original email, for example, enter your user ID / password on the Web management screen, log in, search for the email from the email list (search by date, subject, sender, etc.), and click the email line To display.

  However, in this procedure, the harmless e-mail and the original e-mail are managed by different systems, so the user has to find the relevance of each other's e-mail. There is a problem.

The present invention aims at providing a harmless treated an information processing apparatus capable of easily confirming the original mail corresponding to the mail, the control method, and a program.
There is a mechanism for browsing quarantined emails.

The present invention for solving the above-described problems is an electronic mail that has been detoxified on the basis of the received electronic mail, and information on each part of the electronic mail subjected to the detoxification process and the harmless Creating means for creating an e-mail containing acquisition information for obtaining e-mail before the digitization process, sending means for sending the e-mail created by the creating means to a destination, and the electronic sent by the sending means It is a program for functioning as reception means for receiving an e-mail acquisition request before detoxification processing from e-mail.

According to the present invention, it is possible to verify the original email corresponding to detoxified mail easily, an effect that.

It is a figure which shows an example of the system configuration | structure of an information processing system. It is a figure which shows an example of the hardware constitutions of the information processing apparatus applicable to a proxy server. It is a flowchart which shows the outline | summary of a mail detoxification process. It is a figure which shows an example of a mail detoxification setting screen. It is a figure which shows an example of a mail detoxification setting file. It is a figure which shows an example of a data structure of an original mail database. It is a figure which shows an example of the data content of an original mail database. It is a figure which shows an example of the original mail of detoxification object. It is a figure which shows an example of the harmless mail to which the notification information in the case of performing original mail acquisition by Web access was added. It is a figure which shows an example of the harmless mail to which the notification information in the case of acquiring the original mail by a reply mail was added. It is a flowchart which shows the outline | summary of the original mail acquisition process by Web access. It is a figure which shows an example of an original mail acquisition screen. It is a flowchart which shows the outline | summary of the original mail acquisition process by a reply mail. It is a figure which shows an example of an original transfer mail. It is a flowchart which shows the outline | summary of a mail detoxification process. It is a figure which shows an example of a mail detoxification setting screen. It is a figure which shows an example of a mail detoxification setting file. It is a flowchart which shows the outline | summary of the guidance sentence production | generation process of the original mail acquisition by a reply mail. It is a figure which shows an example of the harmless mail (The text is not a sanitization object) to which the notification information in the case of performing original mail acquisition by a reply mail was added. It is a figure which shows an example of the harmless mail (with the attachment file which is not a deletion object) to which the notification information in the case of performing original mail acquisition by a reply mail was added.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
“First Embodiment”
First, the first embodiment will be described.

  FIG. 1 is a configuration diagram showing an example of the configuration of the information processing system of the present invention.

  As shown in FIG. 1, the information processing system of the present invention includes a proxy server 101, a mail server 102, and client devices 103-1 to 103-3 (hereinafter collectively referred to as client device 103).

  In addition, the above devices are connected to each other via a LAN (Local Area Network) 104 so that they can communicate with each other.

  The mail server 102 is connected to the external mail servers 106-1 and 106-2 (hereinafter collectively referred to as the external mail server 106) connected to the wide area network 105 through the proxy server 101 so as to be able to communicate with each other. Has been.

  There are external client devices 107-1 to 107-2, 107-3 to 107-4 (hereinafter collectively referred to as external client devices 107) that transmit mail via the external mail servers 106-1 and 106-2, respectively. Are connected to each other via an external LAN 108-1 and an external LAN 108-2 (hereinafter collectively referred to as an external LAN 108).

  The proxy server 101 is a server device that functions as an information processing device according to the present invention, and performs server processing for detoxification of e-mail data transmitted from the external mail server 106 by using a detoxification setting described later. It is.

  In addition, the proxy server 101 has a web server function, and in accordance with a request from a user who operates the client device 103 using the function, the mail detoxification setting used for the detoxification process of the e-mail is performed. Accept input or display the original email of the sanitized email.

  Further, the proxy server 101 has a mail server function, and uses the function to transfer the original mail of the harmless mail according to the request mail from the user who operates the client device 103.

  The mail server 102 is a server device that is used to send and receive e-mails, and has server functions such as e-mail address management and storing e-mails sent to the e-mail addresses. It is.

  The client device 103 is a terminal device operated by a user who uses a mail address managed by the mail server 102.

  Next, an example of the hardware configuration of the information processing apparatus applicable to the proxy server 101 in FIG. 1 will be described with reference to FIG.

  The CPU 201 comprehensively controls devices and controllers described later connected to the system bus 204. Further, the ROM 203 or the external memory 211 is necessary for causing the CPU 201 to execute a basic input / output system (BIOS), an operating system program (hereinafter referred to as an OS), and various processes to be described later. Various programs and data are stored. The RAM 202 functions as a main memory, work area, and the like for the CPU 201.

  The CPU 201 implements various processes to be described later by loading a program or the like necessary for executing the process into the RAM 202 and executing the program.

  An input controller (input C) 205 controls input from an input device 209 configured with a keyboard, a pointing device, and the like.

  A video controller (VC) 206 controls display on a display device such as the display device 210. The display device 210 is composed of, for example, a CRT display or a liquid crystal display.

  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 compact flash 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 202, for example.

  Further, the CPU 201 enables a user instruction with a mouse cursor (not shown) on the display device 210.

  The above is the description of the hardware configuration of the information processing apparatus applicable to the proxy server 101. However, the hardware configuration illustrated in FIG. Needless to say, it doesn't matter.

  Further, since the mail server 102, the client device 103, the external mail server 106, and the external client device 107 have the same hardware configuration, description thereof is omitted.

  Next, with reference to FIG. 3, an outline of the electronic mail detoxification process performed by the CPU 201 of the proxy server 101 will be described. A program for executing this processing is stored in the external memory 211 or the like, and the CPU 201 of the proxy server 101 executes this processing according to control by the program.

  The proxy server 101 constantly receives new e-mail data during execution of this process (step S301).

  When new e-mail data is received, the received mail data is registered in the original mail DB 600 as an original mail (step S302).

  Here, with reference to FIG. 6 and FIG. 7, the data structure of the original mail DB 600 stored in the external memory 211 of the proxy server 101 will be described.

  As shown in FIG. 6, the original mail DB 600 includes a message ID 601, a transmission date and time 602, a sender (FROM) 603, a transmission destination 604, a subject 605, a body 606, an attached file 607, an original acquisition URL ID 608, and an original acquisition mail. It is configured with data items such as ID609.

  A message ID 601 is a data item in which identification information of an e-mail is registered, and a value set in Message-id of the mail header is registered.

  In the transmission date / time 602, date / time information when the electronic mail is transmitted is registered. For example, a value set in Date of the mail header is registered.

  The sender 603 is a data item in which the sender information of the email is registered, and the email address set as the FROM information of the email is registered. For example, a sender mail address set in an email envelope is registered.

  The transmission destination 604 is a data item in which e-mail transmission destination information is registered, and an e-mail address set as an e-mail transmission destination (TO, CC, BCC) is registered.

  The e-mail address set in TO is registered in TO604-1, the e-mail address set in CC is registered in CC604-2, and the e-mail address set in BCC is registered in BCC604-3. This information is registered according to the mail header and envelope of the electronic mail.

  The subject 605 is a data item in which subject information of an electronic mail is registered, and information set in the subject of the electronic mail (Subject) is registered. For example, the value set in the subject of the mail header is registered.

  A text 606 is a data item in which the text information of the electronic mail is registered, and an attached file 607 is a data item in which the attached file information attached to the electronic mail is registered.

  The original acquisition URL ID 608 is a data item in which an ID used in an original mail acquisition process by Web access to be described later is registered.

  The original acquisition mail ID 609 is a data item in which an ID used in an original mail acquisition process by a reply mail described later is registered.

  FIG. 7 shows an example of registration of the message ID 601, the original acquisition URL ID 608, and the original acquisition mail ID 609 to the original mail DB.

  The above is the description of the original mail DB 600 stored in the external memory 211 of the proxy server 101.

  Returning to the description of FIG. The original mail data is copied to generate harmless mail data (step S303). The mail sanitization process is performed on the sanitized mail data.

  The mail detoxification setting file is read (step S304).

  Here, with reference to FIG. 4 and FIG. 5, the data structure of the mail detoxification setting file 500 stored in the external memory 211 of the proxy server 101 will be described.

  FIG. 4 shows a mail detoxification setting screen 400. This screen is provided by a Web server operating on the proxy server 101.

  The mail detoxification setting screen 400 includes HTML mail text 401, URL link invalidation 402, attached file deletion 403, and notification information addition 404, each of which can be selected as ON or OFF. Is possible.

  When HTML is converted to text 401, when the received electronic mail is created in HTML, the portion created in HTML is converted into plain text.

  When the URL link invalidation 402 is selected, the URL link portion attached to the received electronic mail is invalidated so that it cannot be pressed.

  Attached file deletion 403, when ON is selected, deletes the attached file of the received electronic mail.

  When the notification information appending 404 selects ON, the received electronic mail is rendered harmless, and then a notification message for performing the harmless processing is added to the harmless mail.

  The mail detoxification setting screen 400 includes original mail access information 405. When the URL is selected, the original mail access information 405 is confirmed using the URL as a method for checking the original mail, and a reply mail is selected. As a confirmation method of the original mail, let me check by reply mail.

  Further, the mail detoxification setting screen 400 includes a setting button 406 and a cancel button 407. When the information is set after selecting the above information, the setting button 406 is pressed and the information is displayed. In order to stop the setting, the cancel button 407 is pressed.

  FIG. 5 shows a mail detoxification setting file 500. This file is generated based on the setting on the mail detoxification setting screen 400.

  The setting information 501, the setting information 502, and the setting information 503 correspond to the description order of the HTML mail text 401 on the mail detoxification setting screen 400, the URL link invalidation 402, the attached file deletion 403, and the notification information addition 404. And ON and OFF are set in the order of description of the setting information 504.

  For example, when HTML text conversion 401 is selected and set to ON, “on” is set for html_mail_to_text that is setting information 501, and when html_mail_to_text that is setting information 501 is selected and set to OFF, “Off” is set.

  Regarding the original mail access information 405, the setting information 505 and the setting information 506 correspond to each other. When a URL is selected, the setting information 505 is set to ON. When a reply mail is selected, the setting information 506 is set to ON. Set.

  Returning to the description of FIG. In step S305, it is determined whether or not text conversion of HTML mail (setting information 501) is ON in the mail detoxification setting. If it is determined to be ON, the process proceeds to step S306 and is not determined to be ON. If so, the process proceeds to step S307.

  In step S306, the HTML mail part of the harmless mail data is converted to plain text. For example, processing such as deleting an HTML tag is performed.

  In step S307, it is determined whether or not URL link invalidation (setting information 502) is ON in the mail detoxification setting. If it is determined to be ON, the process proceeds to step S308 and is not determined to be ON. If so, the process proceeds to step S309.

  In step S308, the URL link part of the harmless mail data is invalidated. For example, processing such as deleting the HTML A tag is performed.

  In step S309, it is determined whether or not the deletion of the attached file (setting information 503) is ON in the mail detoxification setting, and if it is determined to be ON, the process proceeds to step S310, and is not determined to be ON. Advances the process to step S311.

  In step S310, the attached file portion of the sanitized mail data is deleted.

  In step S311, it is determined whether or not the notification information appending (setting information 504) is ON in the mail detoxification setting, and if it is determined to be ON, the process proceeds to step S312 and if it is not determined to be ON, Then, the process proceeds to step S321.

  In step S312, a notification message for the detoxification process is added to the detoxification mail data.

  In step S313, it is determined whether the URL is ON in the original mail access information (setting information 505) in the mail detoxification setting. If it is determined that the URL is ON, the process proceeds to step S314 and is determined to be ON. If not, the process proceeds to step S317.

  In step S314, an ID that is unique in the system is generated and stored in the original acquisition URL ID 608 of the original mail DB 600.

  In step S315, an original mail acquisition URL is generated using the ID generated in step S314 and the information of the Web server operating on the proxy server 101.

  In step S316, the URL generated in step S315 and the guidance message for acquiring the original mail by Web access are added to the harmless mail data.

  In step S317, it is determined whether or not the reply mail is ON in the original mail access information (setting information 506) in the mail detoxification setting. If it is determined that the reply mail is ON, the process proceeds to step S318 and is ON. If not, the process proceeds to step S321.

  In step S318, an ID unique to the system is generated and stored in the original acquisition mail ID 609 of the original mail DB 600.

  In step S319, the guidance message for acquiring the original mail by the reply mail in which the ID generated in step S318 is embedded is added to the harmless mail data.

  This guidance sentence includes a template for designating a part (text and attached file) necessary for obtaining the original mail and a template for designating a destination mail address of the original mail.

  In step S320, the reception mail address of the original acquisition mail is set in the Reply-To mail header of the harmless mail data. This received mail address is a mail address that can be received by a mail server operating on the proxy server 101.

  Here, with reference to FIGS. 8 to 10, an example of notification information to be additionally written will be described.

  FIG. 8 shows the original mail. Two attached files are attached.

  FIG. 9 shows a harmless mail to which notification information is added when acquiring an original mail by Web access. The attached file has been deleted by the mail detoxification process (907). 908 is the guidance sentence added in step S312, 909 is the guidance sentence added in step S316, and 910 is the original mail acquisition URL added in step S316.

  FIG. 10 is a harmless mail to which notification information is added when the original mail is acquired by the reply mail.

  The attached file has been deleted by the mail detoxification process (1007). 1008 is a guidance sentence added in step S312, 1009 is a guidance sentence added in step S319, 1010 is a necessary part designation template added in step S319, 1011 is a destination mail address designation template added in step S319, Reference numeral 1012 denotes the original mail acquisition ID added in step S319.

  Returning to the description of FIG. In step S321, the harmless mail is transmitted to the destination of the original mail using the harmless mail data that has been subjected to various processes. The above is an outline of the processing performed by the CPU 201 of the proxy server 101.

  Next, with reference to FIG. 11, an outline of an original mail acquisition process by Web access performed by the CPU 201 of the proxy server 101 will be described.

  The proxy server 101 constantly receives new Web access to the original mail acquisition URL 910 during execution of this processing (step S1101).

  When a new web access is received, an original acquisition URL ID included in the URL in the request data is extracted (step S1102).

  In step S1103, original mail data corresponding to the original acquisition URL ID is acquired from the original mail DB 600.

  In step S1104, the acquired original mail data is converted into HTML data for Web browser display, and transmitted as a response to the Web browser.

  FIG. 12 shows an example of an original mail acquisition screen showing a configuration displaying the original mail, and the original mail shown in FIG. 8 is displayed.

  Next, with reference to FIG. 13, an outline of an original mail acquisition process using a reply mail performed by the CPU 201 of the proxy server 101 will be described.

  The proxy server 101 constantly receives a new original mail acquisition mail during the execution of this process (step S1301).

  If it is determined that the original mail acquisition mail is newly received, the original acquisition mail ID is extracted from the acquisition ID 1012 of the received mail data (step S1302).

  In step S1303, original acquisition part designation information (text, first attached file, etc.) is extracted from the necessary part template 1010 of the received mail data.

  In step S1304, the original mail transmission destination mail address information of the original mail transmission destination mail address template 1011 is extracted from the received mail data.

  In step S1305, the original mail data corresponding to the original acquisition mail ID is acquired from the original mail DB 600.

  In step S1306, in accordance with the extracted original acquisition part designation information, the text and attached file are extracted from the original mail data to generate original transfer mail data.

  In step S1307, the destination of the original transfer mail data is set in accordance with the extracted original mail transmission destination mail address information.

In step S1308, the generated original transfer mail data is transmitted. FIG. 14 shows an example of an original transfer mail. This is an example in which acquisition of the text and the first attached file is specified.
“Second Embodiment”

  Next, as a second embodiment, a description will be given of an example in which a part (the main text, an attached file) that has already received the original is excluded from the necessary part designation template in the guidance text of the notification information.

  Note that the configuration, processing, and the like in the second embodiment are described using the same reference numerals because they have the same configuration as in the first embodiment, and detailed description thereof is omitted.

  With reference to FIG. 15, an outline of the mail detoxification process performed by the CPU 201 of the proxy server 101 will be described. A program for executing the mail detoxification process is stored in the external memory 211 or the like, and the CPU 201 of the proxy server 101 executes this process according to the control by the program.

  The proxy server 101 constantly receives new e-mail data during execution of this processing (step S1501).

  If it is determined that new e-mail data has been received, the received mail data is registered in the original mail DB 600 as an original mail (step S1502).

  The original mail data is copied to generate harmless mail data (step S1503). The mail sanitization process is performed on the sanitized mail data.

  The mail detoxification setting file 1700 is read (step S1504).

  Here, with reference to FIG. 16 and FIG. 17, the data structure of the mail detoxification setting file 500 stored in the external memory 211 of the proxy server 101 will be described.

  FIG. 16 shows a mail detoxification setting screen 400. This screen is provided by a Web server operating on the proxy server 101, and is different from the mail detoxification setting screen 400 in the first embodiment in that it includes a non-deletion extension 1601.

  The attached file having the extension input to the extension 1601 not to be deleted is left attached without deleting the attached file from the received electronic mail.

  FIG. 17 shows a mail detoxification setting file 500. This file is generated based on the setting on the mail detoxification setting screen 400, and is different from the mail detoxification setting file 500 in the first embodiment in that it includes setting information 1701.

  For example, when “.pdf” and “.png” are set as the extensions 1601 that are not to be deleted, “.pdf” and “.png” are set for attachment_delete_exclusion_ext that is the setting information 1701.

  Returning to the description of FIG. In step S1505, it is determined whether or not text conversion of HTML mail (setting information 501) is ON in the mail detoxification setting. If it is determined to be ON, the process proceeds to step S1506 and is not determined to be ON. If YES, the process advances to step S1507.

  In step S1506, the HTML mail part of the harmless mail data is converted to plain text. For example, processing such as deleting an HTML tag is performed.

  In step S1507, it is determined whether or not URL link invalidation (setting information 502) is ON in the mail detoxification setting. If it is determined to be ON, the process proceeds to step S1508 and is not determined to be ON. If YES, the process advances to step S1509.

  In step S1508, the URL link part of the harmless mail data is invalidated. For example, processing such as deleting the HTML A tag is performed.

  In step S1509, it is determined whether or not attachment deletion (setting information 503) is ON in the mail detoxification setting. If it is determined to be ON, the process proceeds to step S1510, and it is not determined to be ON. Advances the process to step S1515.

  In step S1510, it is determined whether the attachment file part is included in the sanitized mail data. If it is determined that it is included, the process proceeds to step S1511. If not, the process proceeds to step S1515. .

  In step S1511, one piece of attached file information in the harmless mail data is acquired.

  In step S1512, it is determined whether or not the extension of the acquired attached file is specified by the extension not to be deleted (setting information 1701) of the mail detoxification setting, and when it is determined that the extension is specified Advances the process to step S1514. If not, the process advances to step S1513.

  In step S1513, the attached file portion of the sanitized mail data is deleted.

  In step S1514, it is determined whether or not an unprocessed attached file part is still included in the sanitized mail data. If it is determined that it is included, the process proceeds to step S1511. If it is not determined that it is included, the process is performed. Proceed to step S1515.

  In step S1515, it is determined whether or not the notification information addition (setting information 504) is ON in the mail detoxification setting. If it is determined to be ON, the process proceeds to step S1516, and if it is not determined to be ON, Then, the process proceeds to step S1525.

  In step S1516, a detoxification process execution notification is added to the detoxification mail data.

  In step S1517, it is determined whether the URL in the original mail access information (setting information 505) is ON in the mail detoxification setting. If it is determined that the URL is ON, the process proceeds to step S1518 and is determined to be ON. If not, the process advances to step S1521.

  In step S1518, an ID that is unique in the system is generated and stored in the original acquisition URL ID 608 of the original mail DB 600.

  In step S1519, an original mail acquisition URL is generated using the ID generated in step S1518 and the information of the Web server operating on the proxy server 101.

  In step S1520, the URL generated in step S1519 and the original mail acquisition guidance by Web access are added to the harmless mail data.

  In step S1521, it is determined whether the reply mail in the original mail access information (setting information 505) is ON in the mail detoxification setting. If it is determined to be ON, the process proceeds to step S1522, and is ON. If not, the process proceeds to step S1525.

  In step S1522, an ID that is unique in the system is generated and stored in the original acquisition mail ID 609 of the original mail DB 600.

  In step S1523, a guide message for obtaining an original mail by a reply mail in which the ID generated in step S1522 is embedded is added to the harmless mail data.

  This guidance sentence includes a template for designating a part (text and attached file) necessary for obtaining the original mail and a template for designating a destination mail address of the original mail.

  Here, with reference to FIG. 18, an outline of processing for generating a template for designating a necessary part at the time of mail acquisition will be described.

  In step S1801, it is determined in step S1506 whether text processing of the HTML part has been performed on the body part of the sanitized mail data. If it is determined that the processing has been performed, the process proceeds to step S1803 and is not determined to have been performed. If YES, the process advances to step S1802.

  In step S1802, it is determined in step S1508 whether URL link invalidation processing has been performed on the body part of the sanitized mail data. If it is determined that processing has been performed, the process proceeds to step S1803, and it is not determined that it has been performed. If YES, the process advances to step S1804.

  In step S1803, an option template for designating the body part when the original mail is acquired is added to the original mail acquisition guidance by the reply mail.

  In step S1804, it is determined in step S1513 whether deletion processing has been performed for each attached file portion of the sanitized mail data. If it is determined that the deletion processing has been performed, the process proceeds to step S1805. The process is terminated.

  In step S1805, an option template for designating each of the attached file parts deleted when the original mail is acquired is added to the original mail acquisition guide by the reply mail.

  FIG. 19 shows an example of the sanitization mail when the text is not the sanitization target. In this case, there is no option for designating the text in the template for designating the necessary part when obtaining the original mail in the guidance text.

  FIG. 20 shows an example of the sanitization mail in the case where one of the two attachments of the original mail is one to be sanitized and the other is not to be sanitized (.pdf is designated as an extension not to be deleted). It is. In this case, there is no option for designating a non-detoxified attachment in the template for designating a necessary part when obtaining the original mail in the guidance text.

  Returning to the description of FIG. In step S1524, the reception mail address of the original acquisition mail is set in the Reply-To mail header of the harmless mail data. This received mail address is a mail address that can be received by a mail server operating on the proxy server 101.

In step S1525, the harmless mail is transmitted to the destination of the original mail using the harmless mail data that has been subjected to various processes. The above is an outline of the processing performed by the CPU 201 of the proxy server 101.

  In the present invention, the operation of confirming the original mail corresponding to the harmless mail can be easily performed.

  Also, an object of the present invention is to supply a recording medium (or storage medium) in which a program code of software that realizes the functions of the above-described embodiments is recorded to a system or apparatus, and a computer (or CPU or CPU) of the system or apparatus. Needless to say, this can also be achieved when the MPU) reads and executes the program code stored in the recording medium.

  In this case, the program code itself read from the recording medium realizes the functions of the above-described embodiment, and the recording medium on which the program code is recorded constitutes the present invention.

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

  Furthermore, after the program code read from the recording medium is written into a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the function is based on the instruction of the program code. It goes without saying that the CPU or the like provided in the expansion card or 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.

  When the present invention is applied to the recording medium, program code corresponding to the flowchart described above is stored in the recording medium.

101 Proxy server 102 Mail server 103 Client device 104 LAN
105 wide area network 106 external mail server 107 external client device 108 external LAN
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 Device 210 Display Device 211 External Memory

Claims (7)

Computer
An e-mail that has been detoxified based on the received e-mail, information on each part of the e-mail that has been detoxified, and acquisition information for obtaining the e-mail before the detoxification process ; A creation means for creating an email including :
Transmitting means for transmitting the e-mail created by the creating means to a destination;
Receiving means for receiving an acquisition request for the e-mail before the detoxification process from the e-mail transmitted by the transmitting means;
Program to make it function. Said creating means, the detoxification before program according to claim 1 for functioning as creating an e-mail reply including the acquired information for acquiring the electronic mail. It said creating means, among the respective parts of the electronic mail, according to claim 1 or 2 for functioning as creating an e-mail reply including information detoxification before part performing an acquisition request Program. Claim 1 thru | or for making the said creation means function as what produces the reply email containing the information which receives selection of the part before the detoxification process which performs an acquisition request among each parts of the said email 4. The program according to any one of 3.   5. The function according to claim 1, wherein the transmission unit functions as a transmission unit that changes the transmission destination of the email before the detoxification process based on the acquisition request received by the reception unit. The program according to any one of the above items. An information processing apparatus that renders an email harmless and transmits it to a destination,
An e-mail that has been detoxified based on the received e-mail, information on each part of the e-mail that has been detoxified, and acquisition information for obtaining the e-mail before the detoxification process ; A creation means for creating an email including :
Transmitting means for transmitting the e-mail created by the creating means to a destination;
Receiving means for receiving an acquisition request for the e-mail before the detoxification process from the e-mail transmitted by the transmitting means;
An information processing apparatus comprising: A method for controlling an information processing apparatus that renders an e-mail harmless and transmits it to a destination,
The information processing apparatus includes:
An e-mail that has been detoxified based on the received e-mail, information on each part of the e-mail that has been detoxified, and acquisition information for obtaining the e-mail before the detoxification process ; A creation step to create an email containing
A sending step of sending the e-mail created by the creating step to a destination;
An accepting step of accepting an acquisition request for an email before the detoxification process from the email sent by the sending step;
A method for controlling an information processing apparatus, characterized by:

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