WO2006067965A1

WO2006067965A1 - Nuisance e-mail judging device, nuisance e-mail judging method, judging program, and recording medium

Info

Publication number: WO2006067965A1
Application number: PCT/JP2005/022441
Authority: WO
Inventors: Takamasa Shimoda; Kazuto Matsuzaki
Original assignee: Isk Inc.
Priority date: 2004-12-20
Filing date: 2005-12-07
Publication date: 2006-06-29
Also published as: JPWO2006067965A1; JP4711086B2

Abstract

A nuisance e-mail judging device not requiring sender’s computer sending a necessary e-mail to have a special function and not requiring the receiver to do troublesome operation when the receiver receives the e-mail. The nuisance e-mail judging device (11) for distinguishing necessary e-mails from unnecessary nuisance ones comprises a received e-mail storage section (13a) for storing received e-mails as received e-mails, a permission information managing section (13c) where the receiver’s business card information or receiver’s personal information are set as permission information, an e-mail processing section (14) for judging a received e-mail as a nuisance e-mail if the received e-mail contains no permission information and deleting the received e-mail from the received e-mail storage section (13a). If a received e-mail contains no permission information, it is sent from a sender whom the receiver is unacquainted with. Therefore, the e-mail is judged as a nuisance e-mail and deleted from the receiver-mail storage section (13a). Consequently, an e-main from a sender who does not know the receiver is detected and deleted.

Description

Specification

Spam mail determination device, spam mail determination method, determination program, and recording medium

Technical field

[0001] The present invention relates to a technique for discriminating junk mail unnecessary for a recipient from necessary electronic mail.

Background art

[0002] Spam mail that is sent in large quantities and direct mail that you are not interested in, such as unwanted mail that is not necessary for recipients, should be sorted into unnecessary spam mail and necessary e-mail once received. It is a very complicated task. Patent Documents 1 to 4 describe devices that identify and deal with such spam mails.

[0003] When an e-mail is received, the mail device described in Patent Document 1 determines whether the received e-mail has a sending address strength or not in the address book of the recipient or the mail list. Or, if it is not listed in the past incoming mail list, instruct recipients to set incoming call rejection. If the recipient decides to reject the incoming call, it sends a message to the mail server, and the incoming e-mail at the sending address or domain stops.

[0004] The communication information transfer determination device described in Patent Document 2 transmits a reply email when receiving an email, waits for a reply email to the reply email, and returns a response email if the email is a spam email. Because it is leverage! /, Delete the received e-mail after a predetermined time. When the response mail comes back, if the response mail is mechanically returned, the e-mail is deleted.

[0005] The e-mail system described in Patent Document 3 sets a nose code used for authentication between users who mutually send and receive e-mails, attaches a nose code when sending and receiving e-mails, and only matches. The electronic mail is permitted to be sent and received.

[0006] In the electronic mail system described in Patent Document 4, the sender sends in advance an email containing only header information to the receiver, and if there is no problem when the receiver sees the displayed header information, there is no problem. By inputting the permission information, the key information is transmitted to the sender. Then, the sender adds the key information to an e-mail with a text and sends it. Recipients receive the received mail as key information added to the body of the email. If key information is not added to the body of the email, it is discarded.

[0007] Patent Document 1: Japanese Patent Application Laid-Open No. 2003-196217

Patent Document 2: Japanese Patent Application Laid-Open No. 2004-228832

Patent Document 3: Japanese Patent Application Laid-Open No. 2004-102352

Patent Document 4: Japanese Unexamined Patent Application Publication No. 2004-159086

Disclosure of the invention

Problems to be solved by the invention

However, in the mail device described in Patent Document 1, the sender address is set in the address book or the list of past incoming mail, and every time an e-mail is received, the recipient is set to reject incoming calls. Since it is notified whether or not to perform the operation, the operation is troublesome.

[0009] In addition, the communication information transfer determination device described in Patent Document 2 responds by manual operation because it only determines whether or not the sender has responded to the reply mail manually as a response mail. If you don't show junk mail like this, you can't distinguish it from the required email! /.

[0010] In addition, the e-mail system described in Patent Document 3 and Patent Document 4 uses a passcode or key information to distinguish between necessary e-mail and unnecessary spam mail. It must be equipped with a function to send and receive a passcode or key information attached, and to receive and authenticate.

[0011] Therefore, in the present invention, a special function is not required for a computer on the sender side that transmits the necessary e-mail, and junk e-mail that does not require a complicated operation on the receiver side when the e-mail is received. An object of the present invention is to provide a determination device, a spam mail determination method, a determination program, and a recording medium.

Means for solving the problem

[0012] The spam mail determination device of the present invention includes a received mail storage unit that stores a received electronic mail as a received mail in addition to a spam mail determination device that determines a necessary electronic mail and an unnecessary spam mail. Permission information management in which the recipient's business card information is set as permission information And an e-mail processing unit that judges that the junk e-mail is received when the received mail does not include the permission information.

[0013] A sender-powered e-mail is received, and the received mail storage unit stores it as a received mail. In the permission information management unit, business card information is set as permission information. Since the business card information is the information on the recipient's business card, if the email contains this business card information! /, It means that the sender once met the recipient and exchanged the business card. Means that. Therefore, the e-mail processing unit compares the business card information as the permission information with the received mail, and determines whether the permission information is included in the e-mail by including the permission information. In some cases, e-mails from senders have never been acquainted and are judged as spam, so it is possible to identify U-mails from senders who do not know the recipient. Monkey.

[0014] Here, as the business card information, the recipient's last name or name, or both, company name, postal code, part or all of the address, part or all of the telephone number, part of the facsimile number Alternatively, the information may include all or one or more of the deviations. Since these business card information is not an enumeration of numbers and characters that are difficult to understand, it is easy for the sender to understand. It is also easy for the recipient to set.

[0015] An address accumulating unit that accumulates a transmission destination address of the transmitted e-mail is provided, and the e-mail processing unit transmits the received e-mail before determining whether or not the permission information exists for the received e-mail. Original address power When not included in the destination address stored in the address storage unit, a reply mail requesting the permission information is sent to the source address, and the reply mail to the reply mail is sent. If the permission information is included, it is desirable that the transmission source address of the response mail is stored as a permission address in the address storage unit, and the received mail is determined as the necessary e-mail.

[0016] Before the e-mail processing unit first determines whether or not there is permission information for the received mail, whether or not it is included in the transmission destination address stored in the address storage unit of the received mail Determine. If not included, a reply mail requesting permission information is sent to the sender address. The e-mail sent to the address storage unit Since it is stored in the address storage unit, it means that the receiver has transmitted at least once in the past. Therefore, the fact that it is not stored in the address storage unit means that the receiver has never sent it in the past, so a reply message requesting permission information, which is business card information, to confirm the sender. Send the task. And if the response mail is responded to this reply mail, and the permission information is included in the response mail, it is not the person who sent in the past, but it is the other party (sender) who is familiar Can be determined. Therefore, it is possible to determine that the e-mail transmitted from the sender is a necessary e-mail.

[0017] Before the e-mail processing unit determines whether or not the permission information is present for the received mail stored in the received mail storage unit, the source address of the received mail is the address storage unit If it is included in the destination address stored in the mail, it is desirable to determine the received mail as the necessary electronic mail.

[0018] The fact that the source address of the received mail is stored in the destination address stored in the address storage unit means that the recipient is the other party who sent the message once in the past. At this point, the received mail can be determined as a necessary electronic mail. Therefore, it is possible to eliminate the need for confirmation by sending a notification mail requesting permission information to the other party as a reply mail.

[0019] Further, the junk mail determination method of the present invention includes a setting step of setting the business card information of the receiver as permission information, a receiving step of receiving an e-mail of the sender power and storing it as a received mail, and the setting A determination step for determining whether or not the permission information set in step is included in the received mail !, and when it is determined in the determination step that the permission information is included, And a step of judging as mail.

[0020] In the setting step, the business card information of the recipient is set as permission information in advance, and an e-mail from the sender is received and stored as a received mail in the receiving step. Then, in the determination step, it is determined whether or not the permission information is included in the received mail. If it is determined that the permission information is not included, the received mail is deleted. Since the business card information is the information on the recipient's business card, the fact that this business card information is included in the e-mail Means that the person once met with the recipient and exchanged the business card. Therefore, in the judgment step, the business card information as the permission information is compared with the received mail to determine whether the received mail contains the permission information. Since it is an e-mail from the sender, it is determined as a junk mail, so it is possible to discriminate an e-mail from a sender who does not know the recipient.

[0021] Further, the determination program of the present invention is a determination program for causing a computer to function as a junk mail determination device for determining necessary e-mails and unnecessary junk mails. Received mail storage unit, a permission information management unit in which permission information is set as business card information of the recipient, and the received mail contains the permission information! /, N !, It is characterized by functioning as an e-mail processing unit that is sometimes determined to be the spam mail.

[0022] By operating the determination program on a computer, the computer can function in the same manner as the spam mail determination apparatus of the present invention.

[0023] The determination program of the present invention can be provided to a computer and executed by a computer-readable recording medium in which the determination program is recorded. By using a computer-readable recording medium in which the determination program is recorded and installing the computer in a computer, the same effects as those of the junk mail determination device can be obtained.

The invention's effect

[0024] According to the present invention, the following effects can be obtained.

(1) Memorize the received e-mail as a received e-mail, and business card information is included in the received e-mail !, sometimes it is judged as junk e-mail, so do not know the recipient! /, E-mail from the sender Can be determined. Therefore, a sender who has exchanged a business card with the recipient only needs to send an e-mail containing business card information, and therefore it is not necessary to provide a special function on the sender's computer.

(2) Before accumulating the destination address of the sent email and determining whether there is permission information for the received email, the source address of the received email is included in the accumulated destination address. Sometimes send a reply email requesting permission information to the sender address If the response email for the reply email contains permission information, the sender's address of the response email is stored as the permission address, and the received email is sent in the past by determining that it is a necessary email. It is possible to determine that the other party (sender) is an acquaintance, although the other party is never. Therefore, even a sender who sends an e-mail to a recipient for the first time will receive a reply mail requesting permission information. By sending a reply mail according to the contents of this reply mail, If you are an acquainted sender, you can prevent the necessary e-mails from being judged as spam. Therefore, it is possible to more reliably determine necessary e-mail and spam mail.

(3) Source address of received mail If it is included in the accumulated destination address, it is determined that the received mail is a necessary e-mail. If so, don't be bothered to send a response email containing business card information! Therefore, the operation burden on the sender side can be reduced.

Brief Description of Drawings

FIG. 1 is a diagram for explaining an electronic mail system using a spam mail determination device according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a configuration of a spam mail determination device according to an embodiment of the present invention.

FIG. 3 is a flowchart for explaining the operation of the junk mail determination apparatus according to the embodiment of the present invention.

FIG. 4 is a flowchart for explaining the operation of the junk mail determination apparatus according to the embodiment of the present invention.

FIG. 5 is a diagram showing an example of a reply mail transmitted by the spam mail determination apparatus according to the embodiment of the present invention.

FIG. 6 is a diagram showing an example of a reply mail transmitted by the spam mail determination apparatus according to the embodiment of the present invention.

Explanation of symbols

[0026] 1 computer

2 Internet

3 Mail server 4 computer

5 Menoresano

10 Communications department

11 Junk mail detection device

12 Mailer

13 Memory

13a Received mail storage

13b Address storage unit

13c Permit Information Management Department

13d Junk Address Management Department

14 Email processing department

BEST MODE FOR CARRYING OUT THE INVENTION

The configuration of the spam mail determination device according to the embodiment of the present invention will be described based on FIG. 1 and FIG. FIG. 1 is a diagram for explaining an electronic mail system using the junk mail determination device according to the embodiment of the present invention. FIG. 2 is a diagram for explaining the configuration of the spam mail determination apparatus according to the embodiment of the present invention.

As shown in FIG. 1, the junk mail determination apparatus operates on a computer 1. The computer 1 is connected to the Internet 2 as an example of a network via a communication line such as a telephone line, ISDN (Integrated Services Digital Network), or an optical fiber. In Fig. 1, network connection devices such as modems and routers for connecting to the Internet 2 are omitted for convenience.

[0029] On the Internet 2, a mail server 3 having a mail account of an operator who operates the computer 1, a computer 4 for sending an email to the computer 1, and receiving an email from the computer 1, and a computer 4 The mail server 5 having the mail account of the operator to be operated is connected. In addition, when the computer 1 transmits an e-mail, it transmits through the mail server 3, and similarly, the computer 4 transmits through the mail server 5.

As shown in FIG. 2, the computer 1 sends and receives electronic mail to and from the Internet 2 A communication unit 10, a junk mail determination device 11 that determines whether the received e-mail is necessary or unnecessary junk mail, and a mailer unit 12 are provided.

[0031] The communication unit 10 is a communication unit for connecting to the Internet 2 via a communication line.

The communication unit 10 is a modem when connected by dial-up using a telephone line, and when connected by ADSL (Asymmetric Digital Subscriber Line), it is connected to an external modem (LAN (Local Area Network)). It can be.

The spam mail determination device 11 includes a storage unit 13 and an email processing unit 14. The storage unit 13 is a storage unit capable of reading and writing data, and may be a volatile memory, a nonvolatile memory, a disk device, or the like. The storage unit 13 includes a received mail storage unit 13a, an address storage unit 13b, a permission information management unit 13c, and a nuisance address management unit 13d.

[0033] The received mail storage unit 13a stores an electronic mail received via the communication unit 10 as a received mail. In the address storage unit 13b, the transmission destination address of the electronic mail transmitted from the mailer unit 12 is stored as a transmission mail address. In addition, the address storage unit 13b should not mistakenly identify a confirmation e-mail when applying for a ticket or product on a web page of the World Wide Web (WWW) site, for example. In addition, the sender address (or domain name) of the confirmation email is preset and stored as the permitted email address. In the permission information management unit 13c, business card information or personal information of an operator who operates the computer 1 is set as permission information. The junk address management unit 13d stores the sender addresses of e-mails determined to be junk mail as junk mail addresses. Here, business card information and personal information will be described in detail.

[0034] The business card information is information described on a business card handed to a person who first meets with the operator by an operator who operates the computer 1. For example, a name card, company name, postal code, address, telephone number, facsimile number, etc. are written on the business card.

[0035] As the business card information, it is only necessary to determine that the sender who sends the e-mail is the person who exchanged the business card. If it is a name, only the name, surname, or name may be used. It is desirable to use all company numbers for telephone numbers or facsimile numbers, but a four-digit telephone number excluding the outside area code and inside area number is sufficient for confirmation. One of these is used as business card information Although it is possible to check the accuracy of multiple combinations, it is desirable. However, as the number increases, the burden on the sender increases.

[0036] Similarly, personal information may include the recipient's last name or name, or both, company name, school name, postal code, part or all of the address, part or all of the telephone number, fax number Part or all of the date, date of birth, nickname (alias), pen name (including aliases used when posting to Radio TV), mobile name (alias used for exchanging emails on mobile phones), hobby The information may include one or more of the above. In a close relationship between the sender and the receiver, this personal information can be known in common sense or in daily conversation. Therefore, knowing such personal information can be determined to be a close relationship.

[0037] The e-mail processing unit 14 stores the received mail when the source address of the received mail stored in the received mail storage unit 13a is included in the junk mail address stored in the junk address management unit 13d. It has a function to delete the received mail stored in the section 13a. In addition, the e-mail processing unit 14 permits the sending mail address stored in the received mail storage unit 13a when the sender address of the received mail is not included in the outgoing mail address and the permitted mail address stored in the address storage unit 13b. It has a function to send a reply mail requesting information to the sender address. If permission information is included in the response mail for the reply mail, the response mail source address is stored as a permitted address in the address storage unit 13b, and the received mail is determined to be a necessary e-mail. It is equipped with.

[0038] In addition, the e-mail processing unit 14 receives if the transmission source address of the received mail stored in the received mail storage unit 13a is V included in the transmission mail address stored in the address storage unit 13b. It has a function to judge mail as necessary e-mail.

[0039] Further, the e-mail processing unit 14 determines that the response mail stored in the received mail storage unit 13a is junk mail when the permission information is not included, and transmits the e-mail that is the junk mail. A function of accumulating addresses in the junk address management unit 13d is provided.

[0040] The spam mail determination device 11 having the above configuration causes the computer 1 to function as each of the above-described units. This is realized by executing a determination program for the purpose. The determination program is stored in a recording medium that can be read by the computer 1, such as a flexible disk, a CD-ROM (Compact Disk Read Only Memory), a memory card, etc., and installed in the computer 1, The computer 1 can be operated as the junk mail determination device 11.

[0041] The mailer unit 12 has a function that allows an operator operating the computer 1 to create an e-mail to be sent or to view an e-mail that is determined not to be a junk e-mail. If the computer does not include the junk mail determination device 11, the mailer unit 12 transmits or receives an e-mail to the mail server 3 via the communication unit 10. For example, Outlook (registered trademark) manufactured by Microsoft Corporation can be used as the mailer unit 12.

The operation of the junk mail determination device according to the embodiment of the present invention configured as described above will be described with reference to FIGS. FIG. 3 and FIG. 4 are flowcharts for explaining the operation of the junk mail determination device according to the embodiment of the present invention. FIG. 5 and FIG. 6 are diagrams showing an example of a reply mail transmitted by the spam mail determination device according to the embodiment of the present invention. In FIGS. 3 and 4, the computer 4 that transmits electronic mail and the mail server 5 that the computer 4 uses for transmission and reception are illustrated as the transmission side. In the present embodiment, the operator who operates the computer 4 is described as a sender, and the operator who operates the computer 1 is described as a receiver.

[0043] In the permission information management unit 13c of the junk mail determination device 11, a lower four-digit number excluding the outside area number and the inside area number of the business card information telephone number is set as permission information in advance. Shall be. In addition, the address storage unit 13b stores the destination address when the operator who has operated the computer 1 has sent an e-mail in the past using the mailer unit 12 as a transmission mail address. And Further, it is assumed that a permitted mail address is preset in the address storage unit 13b.

[0044] As shown in FIG. 3, first, the data is transmitted from the computer 4 via the electronic mail power mail server 5 (S10). The transmitted e-mail is delivered to the mail server 5 and stored in the recipient's mailbox secured in the mail server 5 (S20). [0045] The mailer unit 12 of the computer 1 transmits an e-mail reception request to the mail server 3. This reception request is transmitted according to the incoming mail check cycle set in the mailer unit 12, or the operator manually transmits the mailer unit 12. The e-mail processing unit 14 of the junk mail determination device 11 passes the reception request from the mailer unit 12 through the junk mail determination device 11 under the condition that there is no received mail stored in the received mail storage unit 13a. To the mail server 3 via the communication unit 10. This reception request can be performed by, for example, POP (Post Office Protocol), APOP (Authenticated Post Office Protocol), IMAP (Internet Message Access Protocol) 4, etc. If possible, go with other protocols. (S30).

When the mail server 3 receives the reception request, the electronic mail stored in the corresponding mailbox is transmitted to the computer 1 (S40). The e-mail received via the communication unit 10 is stored as a received mail in the received mail storage unit 13a (S50).

The e-mail processing unit 14 determines whether or not the sender address of the received mail stored in the received mail storage unit 13a is included in the junk mail address stored in the junk address management unit 13d (S300) . If the sender address of the received mail is included in the spam mail address stored in the spam address management unit 13d, the received mail is deleted (S310). In this case, since the junk mail is automatically deleted, the operator does not need to perform complicated operations.

[0047] If the junk e-mail address stored in the junk address management unit 13d does not include the source address of the received mail, the e-mail processing unit 14 sends the source of the received mail stored in the received mail storage unit 13a. Address power It is determined whether or not it is included in the transmission mail address and the permitted mail address stored in the address storage unit 13b. (S60).

[0048] In S60, if it is determined that the e-mail processing unit 14 is included in the e-mail address of the received e-mail, it is included in the e-mail address of the e-mail storage unit 13b. This means that the recipient and the sender are intimately known or have a close relationship. Also, if it is determined that it is included in the permitted email address of the address storage unit 13b, it means that the email is specifically permitted. Therefore, the power contained in the outgoing e-mail address, or permission mail Since the received mail with the permitted address included in the email address can be determined as the necessary email, the email processing unit 14 uses the received email stored in the received email storage unit 13a as S30. Pass in response to the reception request at (S70). The mailer unit 12 stores the e-mail to which the e-mail processing unit 14 has been passed as a new mail (S80).

[0049] In S60, if it is determined that the e-mail processing unit 14 is not included in the sent mail address of the received mail address storage unit 13b, the recipient is addressed to the sender once in the past. Means never sent to. Therefore, in order to confirm the sender, it is determined whether the power of the received information includes the business card information of the permission information management unit 13c or the permission information of the personal information. The e-mail is composed of a header and a body, but it is desirable that the body should be the title part of the header so that the sender can easily input it. In the present embodiment, it is determined whether or not permission information is described in the main text of the e-mail processing unit 14 received mail (S90).

[0050] In S90, if the received mail contains business card information or personal information permission information, the sender is familiar with the recipient by exchanging business cards, etc., or has a personally close relationship. Since the e-mail is not a junk e-mail, the process proceeds to S70 and the received mail is passed to the mailer unit 12.

[0051] The sender exchanges business cards with the receiver and is acquainted, or is in a close relationship with a friend. If you don't know that 11 is working, you usually don't include permission information in the body of the email. Therefore, the determination at S90 is “NO” and the process proceeds to S100.

[0052] As shown in FIG. 4, when it is determined in S90 that the permission information is not included in the body of the received mail, the e-mail processing unit 14 confirms the sender with the permission information. Send a reply email to request Reply mail can be sent to the mail server 3 using SMTP (Simple Mail Transfer Protocol), but other protocols may be used as long as an email such as reply mail can be sent to the mail server 3 (S 100). . Figures 5 and 6 show an example of a reply mail requesting permission information.

[0053] In the case where computer 1 is installed in the recipient's company, There are many people involved in work. Therefore, as shown in FIG. 5, the reply mail contains a word requesting the last four digits of the telephone number written on the business card as permission information. In addition, when the computer 1 is installed at the recipient's home, there are many people who have a personal relationship as an email partner. Therefore, as shown in FIG. 6, the reply mail contains a text requesting that the name of the recipient as permission information be written in katakana. Also, as shown in Fig. 5 and Fig. 6, it is described that the reply mail is mechanically returned in addition to the word requesting permission information. Therefore, it can be understood that such a reply mail is mechanically sent back to the sender who sent the e-mail for the first time without knowing anything to the recipient. There is no distrust to the sender.

[0054] The contents of these reply mails can be set as appropriate according to the setting contents of the permission information of the permission information management unit 13c. For example, in Fig. 6, the name of the recipient is required to be written in katakana in the response mail, but it can also be a reply mail that requires writing in hiragana or kanji. In that case, the permission information of the permission information management unit 13c will ask for your name in the hiragana reply mail! /, If it is hiragana, the reply mail will ask for your name in kanji. If necessary, it must be set in kanji.

Returning to FIG. 4, the reply mail transmitted in S 100 is relayed from mail server 3 to mail server 5 and delivered to computer 4 (S 110).

[0056] If the delivered reply mail is the email shown in Fig. 5, the sender reads the word requesting the last four digits of the phone number, sees the business card when the business card is exchanged with the receiver, and responds. Create and send an email (S 120).

[0057] Since the sender can recognize the recipient who sent the reply mail from the sender address of the reply mail, etc., the sender's business card can be specified from among many business cards. For example, if the recipient is a randomly extracted partner or a recipient whose destination address has been created mechanically, this reply mail power can identify the partner (recipient). You cannot enter the business card information or personal information and send a response mail. Therefore, it is possible to confirm the sender by requesting business card information or personal information from the e-mail. [0058] The transmitted response mail is delivered to the mail server 3 and stored in the recipient's mailbox (S130). Similar to S30, the mailer unit 12 transmits an e-mail reception request to the mail server 3 (S140). When the mail server 3 receives the reception request, the response mail stored in the corresponding mailbox is transmitted to the computer 1 (S150). The received response mail is stored as received mail in the received mail storage unit 13a (S160).

[0059] When the e-mail processing unit 14 recognizes that the received mail stored in the received mail storage unit 13a is a response mail, the response mail includes the permission information of the permission information management unit 13c. Determine whether or not. In this embodiment, the last 4 digits of the phone number in the business card information, excluding the outside area number and the inside area number, are! /, So the last 4 digits are written in the received mail. (S 170).

[0060] In S 170, if the received mail contains business card information or personal information permission information, the sender exchanges the business card with the receiver, and is familiar or personally familiar. Since the e-mail is not an unsolicited e-mail, the e-mail processing unit 14 accumulates the sender's address in the address accumulation unit 13b as a permitted address, and received it in S50 in response to the reception request. Pass the received mail (S 180). The mailer unit 12 stores the e-mail to which the e-mail processing unit 14 has been passed as a new mail (S190).

[0061] Since the response mail with permission information in the text is of a sender who is acquainted with the recipient, by storing the response mail sender address as a permission address in the address storage unit 13b, Since it is not necessary to respond to reply e-mails or write permission information, the burden on the sender can be reduced.

[0062] If it is determined in S170 that the main body of the received mail does not contain permission information, the e-mail processing unit 14 can determine that the e-mail received in S50 is a junk mail. The sender address of the spam e-mail is stored in the junk address management unit 13d, and the e-mail received in S50 and the response mail received in S160 are deleted from the received mail storage unit 13a ( S200).

[0063] In addition, by sending the list of junk mail sender addresses stored in the junk address management unit 13d to the mail server 3 and creating a database, an operator who has a mail account in the mail server 3 and In common, it can also be used to determine spam mail. In that case, the junk mail determination device 11 accesses the mail server 3 at predetermined intervals, and if the junk mail database has been updated, downloads this database and stores the junk address storage unit 13b. What is necessary is just to update the content. By doing so, it is possible to share the sender address of spam mail with operators belonging to the same provider.

[0064] Further, the mail server 3 can aggregate a database of spam mails possessed by a plurality of providers by transmitting a spam mail database to a specific server negotiated with another provider. Aggregating the spam mail databases of multiple providers can be used to clean up spam mail.

[0065] By gathering the spam mail database, one address can be set in the mail server 3 or the spam mail determination device 11 as a server to be referred to, so that it can be easily referred to. However, if there is a concern that the load on the server with the aggregated spam database will increase and the response will be slow, the spam database will be distributed to multiple servers, or each provider will have It can also be distributed to mail servers. In this way, it is possible to suppress spam by constructing a database of e-mail sender addresses that many operators have determined to be spam.

[0066] In this way, a sender who has exchanged a business card with the recipient may send an email containing the business card information, and a sender who is close to the recipient will receive personal information. Since it is only necessary to send such e-mails, it is not necessary for the sender's computer 4 to have special functions. Also, the recipient's computer 1 does not include complicated business card information or personal information, and the e-mail is deleted, so there is no need for complicated operations.

[0067] While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. In the present embodiment, the spam mail determination device 11 and the mailer unit 12 are in the same device, but the spam mail determination device may be provided in the mail server 3. Further, by interposing a junk mail determination device as a separate device between the mail server 3 and the mailer unit 12, it is also possible to make the devices separate from each other.

[0068] In this embodiment, the determination program of the present invention is installed in a computer. However, even a mobile phone equipped with an e-mail transmission / reception function can be operated by implementing the determination program of the present invention in a ROM (Read Only Memory). Is possible.

Industrial applicability

Since the junk mail determination device of the present invention does not require a complicated operation on the recipient side when receiving an e-mail, it can be used at a company, school, facility, etc., or at home. is there.

Claims

The scope of the claims

[1] The junk e-mail judging device that judges necessary e-mails and unwanted junk e-mails The received e-mail storage unit that stores received e-mails as received e-mails, and the recipient's business card information are set as permission information Permission information management department,

An unsolicited mail determination device comprising: an e-mail processing unit that determines that the received information includes the permission information! / ,!

[2] An address storage unit that stores the destination address of the sent email is provided.

The e-mail processing unit is included in the transmission destination address stored in the address storage unit before determining the presence / absence of the permission information for the received mail. When the reply mail requesting the permission information is transmitted to the sender address, the reply mail for the reply mail includes the permission information! / 2. The junk mail determination device according to claim 1, wherein an original address is stored in the address storage unit as a permitted address, and the received mail is determined as the necessary electronic mail.

[3] The e-mail processing unit determines that the source address of the received mail is the address storage unit before determining whether or not the permission information is present for the received mail stored in the received mail storage unit. 3. The junk mail determination device according to claim 2, wherein the received mail is determined as the necessary e-mail if it is included in the transmission destination address stored in.

[4] a setting step for setting the business card information of the recipient as permission information;

A receiving step of receiving a sender-powered e-mail and storing it as a received mail; a determining step of determining whether or not the permission information set in the setting step is included in the received mail;

And a step of determining a junk mail when it is determined that the permission information is included in the determination step.

[5] An address storing step for storing a destination address of the transmitted e-mail when the e-mail is transmitted; An address inspection step of comparing the source address of the received mail with the destination address stored in the address storage step;

A reply step of sending a reply mail requesting the permission information when it is determined that the transmission source address is included in the transmission destination address accumulated in the address checking step and that the permission information is requested;

If the permission information is included in the response mail with respect to the reply mail, a step of accumulating the sender address of the response mail as a permission address and determining the received mail as a necessary e-mail is included. The nuisance mail determination method according to claim 4, wherein:

[6] The method includes a step of determining the received mail as the necessary electronic mail when it is determined that the transmission source address is included in the transmission destination address accumulated in the address checking step. 6. The method for judging junk mail according to claim 5.

[7] A judgment program for causing a computer to function as a junk mail judging device for judging required e-mail and unwanted junk mail.

Computer

A received mail storage unit that stores the received e-mail as a received mail, a permission information management unit in which the business card information of the recipient is set as permission information,

A determination program that functions as an e-mail processing unit that determines that the received mail includes the permission information! / ,!

[8] Further, the computer is caused to function as an address storage unit for storing a destination address of the transmitted e-mail,

The e-mail processing unit is included in the transmission destination address stored in the address storage unit before determining the presence / absence of the permission information for the received mail. When the reply mail requesting the permission information is transmitted to the sender address, the reply mail for the reply mail includes the permission information! / 8. The determination program according to claim 7, wherein an original address is stored in the address storage unit as a permitted address, and the received mail is determined as the necessary electronic mail.

[9] The e-mail processing unit determines that the source address of the received mail is the address storage unit before determining the presence / absence of the permission information for the received mail stored in the received mail storage unit. 9. The determination program according to claim 8, wherein the received mail is determined as the necessary electronic mail if included in the transmission destination address stored in.

[10] A recording medium readable by a computer in which the determination program according to any one of claims 7 to 9 is recorded.