JP4185462B2 - Mail device - Google Patents

Description

  The present invention relates to a mail apparatus that transmits and receives mail (electronic mail).

  Currently, e-mails are actively transmitted and received on mobile phones, personal computers, etc., but unsolicited e-mails sent unilaterally for business purposes have become a social problem. Some telephone companies are charged only for incoming spam emails, which is a big problem in terms of burdens on users.

  As a method of rejecting incoming spam mails, you can access a spam mail countermeasure site of a telephone company or Internet service provider, register an email address that rejects incoming calls, block emails from that email address, A method of registering an e-mail address that permits the e-mail and receiving only e-mail from the e-mail address is used.

As a prior art document, an e-mail address permitting an incoming call is registered in the storage means in advance, the mail address of the incoming mail is compared with the e-mail address registered in the storage means, and included in the registered e-mail address A method of rejecting an incoming call when not received is disclosed (for example, see Patent Document 1).
JP 2003-196217 A

  Conventional spam mail rejection has been performed as described above, but has the following problems.

  In other words, the above-described conventional method has to register each recipient's e-mail address to be rejected or permitted in advance and delete the registration information when it becomes unnecessary, and the operation is complicated. There was a problem.

  In addition, in the case of the method of registering an e-mail address that permits incoming calls as described in Patent Document 1, even if the other party has been registered as one that permits incoming calls, the other party changed the e-mail address. In this case, there was a problem that the incoming call was not unexpectedly made until the e-mail address permitted to receive the call was changed. In this regard, the change of the e-mail address is switched from the old e-mail address to the new e-mail address without any parallel period, and since it is not possible to have multiple e-mail addresses, it is impossible to tell that the e-mail address has changed after the e-mail change was there.

  The present invention has been proposed in view of the above-described conventional problems, and the object of the present invention is that it does not require an operation such as registration of an e-mail address, and even if an e-mail address is changed, an incoming call is permitted before. An object of the present invention is to provide a mail device that can receive a call from the other party.

In order to solve the above-mentioned problems, the present invention provides a storage means for registering a mail address that permits an incoming call, and a destination mail address in the storage means at the time of forwarding outgoing mail. A means for registering, a means for permitting an incoming mail when the mail address registered in the storage means at the time of receiving the mail includes a sender mail address of the received mail, and a destination address of the transmitted mail is unknown And means for deleting the destination mail address of the transmission mail from the storage means when it is returned . As a result, the destination e-mail address that sent the e-mail is automatically registered as an e-mail address that allows incoming calls, and e-mail addresses that no longer exist are automatically deleted from e-mail addresses that allow incoming calls. Greatly improved.

In addition, as described in claim 2 , the storage means for registering the mail address and mail identification information that permits the incoming call, and the destination mail address and the mail identification information of the transmission mail when the transmission mail is transferred Means for registering with the means, and when the mail address registered in the storage means is included in the mail address registered in the storage means, or in the mail address registered in the storage means A means for permitting an incoming call when the sender mail address of the received mail is not included and the mail identification information registered in the storage means includes the mail identification information of the received mail; Can be provided. Thereby, even if the other party changes the mail address, the mail can be received normally by sending the mail as a reply to the mail sent from here before.

According to a third aspect of the present invention, the mail identification information may be a message ID added at the time of transmission of a transmission mail, or a keyword present in the title or text of the transmission mail. As a result, it is possible to easily determine whether or not it is a reply to the mail previously transmitted from here.

Further, as described in claim 4 , when the transmitted mail is returned with the unknown destination, it is provided with means for deleting the destination mail address and mail identification information of the transmitted mail from the storage means Can do. As a result, mail addresses and mail identification information that no longer exist can be automatically deleted from mail addresses that are permitted to receive calls, and operability can be improved.

In addition, as described in claim 5 , the reception prohibition flag provided for each mail address registered in the storage means and the mail identification information of the outgoing mail are included in the mail identification information registered in the storage means. Means for setting the reception prohibition flag when included, and means for clearing the reception prohibition flag when the mail identification information of the outgoing mail is not included in the mail identification information registered in the storage means; Can be provided. Accordingly, it is possible to perform a setting for rejecting an incoming call from the other party by a simple operation of continuously transmitting the same mail.

  According to the present invention, it is possible to provide a mail apparatus that does not require an operation such as registration of a mail address and can receive a call from a partner who has previously permitted a call even if the mail address is changed.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a configuration diagram of a mail system according to an embodiment of the present invention.

  In FIG. 1, a mail device 1 is a server on the mobile phone service provider side, and accepts mail transmitted from a mobile terminal 5 such as a mobile phone via a base station 4 and a communication network 3 and delivers it to a destination. have. The storage unit 2 is used for processing in the mail device 1, and includes a subscriber information DB 21 that manages information on subscribers in the own domain, a mail address that permits incoming calls for each subscriber (phone number), and the like. Are registered in the address book DB 22 and a mail box 23 for storing mail addressed to subscribers in the own domain.

  On the other hand, a mail device 6 such as an Internet service provider is connected to the communication network 3, and a terminal 7 such as a personal computer connected to the mail device 6 via a public line (dial-up) or a dedicated line and the portable terminal 5. You can also send and receive emails between them. The mail device 6 may be a mail device of another mobile phone service provider.

  FIG. 2 shows the configuration of the mail device 1, which is received by the control unit 10 that controls the overall operation, the transmission / reception unit 11 that transmits / receives mail data to / from the communication network 3, and the transmission / reception unit 11. Destination domain determination unit 12 for determining whether mail is addressed to its own domain or other domain, mail receiving unit 13 for receiving mail addressed to its own domain, and forwarding process of mail addressed to other domains A mail transfer unit 14 that performs error message generation, an error mail generation unit 15 that generates an error mail such as an unknown address, a message ID generation unit 16 that generates a message ID to be added to a transmission mail to be transferred, and a mail that is received or transferred A mail header acquisition unit 17 that extracts a header, and transmission source information such as a transmission source mail address of received mail is stored in the subscriber information DB 21 and the address book D. Source information determination unit 18 for determining with reference to 22 registration information, and destination information for determining destination information such as a destination mail address of a transmission mail to be transferred with reference to registration information in subscriber information DB 21 and address book DB 22 And a determination unit 19.

  FIG. 3 shows a logical configuration of the subscriber information DB 21 that manages information of subscribers in the own domain, and has fields such as “subscriber name”, “phone number”, and “mail address”.

  FIG. 4 shows a logical configuration of the address book DB 22 for registering a mail address or the like that permits an incoming call for each telephone number of the subscriber. The “mail address” corresponds to the “phone number” as a key. A plurality of “reception prohibition flags”, “message IDs”, and “keywords” are registered. That is, in the address book DB 22, in the initial state, fields other than “telephone number” are blank as shown in (a). And the fields of “mail address”, “reception prohibition flag”, “message ID”, and “keyword” are automatically registered. The “reception prohibition flag” is “0” (incoming call permission) by default. The “message ID” is information added when the transmitted mail is transferred, and the “keyword” is a keyword (character string) existing in the title or text of the transmitted mail. That is, in a general mail device, a message ID is added to a transmitted mail, and a reply mail to the mail includes the message ID of the original mail as reference information. There is a place where the reference information is not added to the reply mail, and “keyword” is introduced to cope with such a situation.

  In FIG. 4, the information on the other party permitted to receive calls is stored in association with the subscriber's telephone number. However, if the subscriber's mail address is unique within the domain, the subscriber's telephone number is stored. Instead of using a mail address or using a mail address together with a telephone number, the address book DB 22 can be accessed from the mail address of the subscriber.

  FIG. 5 is a flowchart showing the operation of the mail device 1 when receiving mail. Here, the operation after the transmission / reception unit 11 of the mail device 1 receives mail data from the communication network 3 and the destination domain determination unit 12 determines that the mail is addressed to the own domain and distributes it to the mail reception unit 13. Is shown.

  In FIG. 5, the mail receiving unit 13 acquires the destination mail address of the received mail by the mail header acquiring unit 17, and determines whether this destination mail address is registered in the subscriber information DB 21 (step S1).

  When the destination mail address is registered in the subscriber information DB 21 (YES in step S1), the mail receiving unit 13 acquires the subscriber's telephone number from the subscriber information DB 21 based on the destination mail address (step S2). Based on the acquired telephone number, the transmission source information determination unit 18 determines whether the transmission source mail address is registered in the address book DB 22 (step S3). The sender email address is acquired by the email header acquisition unit 17.

  If the sender mail address is registered in the address book DB 22 (YES in step S3), the mail receiver 13 determines whether the reception prohibition flag corresponding to the sender mail address in the address book DB 22 is set (step S4). ) If the reception prohibition flag is not set (NO in step S4), the received mail is registered in the destination subscriber area of the mail box 23 (step S5). That is, since the received mail is from a mail address registered as incoming permission and the reception prohibition flag is not set, mail reception is performed.

  On the other hand, when the transmission source mail address is not registered in the address book DB 22 (NO in step S3), the mail reception unit 13 uses reference information (“References” in the mail header based on the mail header acquired by the mail header acquisition unit 17. : ") Is determined (step S6).

  When there is reference information in the mail header (YES in step S6), the transmission source information determination unit 18 registers the reference information in the “message ID” field in the address book DB 22 based on the previously acquired telephone number. (Step S7).

  If the reference information is registered in the address book DB 22 (YES in step S7), the mail receiving unit 13 registers the transmission source mail address in the address book DB 22 based on the previously acquired telephone number (step S8). The received mail is registered in the area of the destination subscriber in the mail box 23 (step S5). In other words, it was not a received mail from an email address registered as an incoming call permit, but it was confirmed that it was a reply to a previously sent email due to a match in the reference information, so the email address was changed It is determined that the mail address is newly registered as an incoming-permitted mail address, and mail is received.

  On the other hand, if there is no reference information in the mail header (NO in step S6), the sender information determination unit 18 registers the keyword of the mail text in the “keyword” field in the address book DB 22 based on the previously acquired telephone number. It is determined whether it has been performed (step S9).

  If the keyword is registered in the address book DB 22 (YES in step S9), the sender mail address is registered in the address book DB 22 based on the previously acquired telephone number (step S8), and the destination subscriber of the mail box 23 is registered. The received mail is registered in the area (step S5). In other words, it is not a received mail from an email address registered as an incoming call permit, but the email address has been changed because it is confirmed that it is a reply to a previously sent email due to a keyword match It is determined that the mail address is newly registered as an incoming-permitted mail address, and mail is received.

  On the other hand, when the destination mail address is not registered in the subscriber information DB 21 (NO in step S1), or when the reception prohibition flag is set (YES in step S4), the reference information is registered in the address book DB 22. If there is no address (NO in step S7) and no keyword is registered in the address book DB 22 (NO in step S9), the error mail generation unit 15 generates an error mail indicating that the destination is unknown. Then, other mail devices are notified via the mail transfer unit 14 and the transmission / reception unit 11 (step S10).

  In steps S3, S4, and S6 to S9 in FIG. 5, the address book DB 22 is accessed based on the subscriber's telephone number, but the address book DB 22 is accessed based on the subscriber's mail address. It can also be done. In this case, the acquisition of the telephone number from the subscriber information DB 21 in step S2 can be omitted.

  FIG. 6 is a flowchart showing the operation of the mail device 1 when receiving an unknown destination mail. Here, the operation after the transmission / reception unit 11 of the mail device 1 receives mail data from the communication network 3 and the destination domain determination unit 12 determines that the mail is addressed to the own domain and distributes it to the mail reception unit 13. Is shown.

  In FIG. 6, the mail receiving unit 13 acquires the transmission source mail address by the mail header acquisition unit 17 and then acquires the telephone number from the subscriber information DB 21 based on the transmission source mail address (step S <b> 11). The destination e-mail address, message ID, and keyword are deleted from the address book DB 22 based on the telephone number (step S12). That is, since it is not preferable to register an e-mail address that does not exist as a destination as a target of incoming call permission, it is deleted.

  In step S12 in FIG. 6, the address book DB 22 is accessed based on the subscriber's telephone number. However, the address book DB 22 may be accessed based on the subscriber's mail address. . In this case, the acquisition of the telephone number from the subscriber information DB 21 in step S11 can be omitted.

  FIG. 7 is a flowchart showing the operation of the mail device 1 during mail transfer. Here, the transmission / reception unit 11 of the mail device 1 receives mail data from the communication network 3, the destination domain determination unit 12 determines that the mail is addressed to another domain, and distributes the mail to the mail transfer unit 14. Reference numeral 14 denotes an operation after the message ID generated by the message ID generating unit 16 is added and the mail is transferred.

  In FIG. 7, the mail transfer unit 14 acquires the subscriber's telephone number from the subscriber information DB 21 based on the mail address of the transmission source (step S21), and the destination information determination unit 19 uses the acquired telephone number. Then, it is determined whether the destination mail address is registered in the address book DB 22 (step S22).

  If the destination mail address is not registered in the address book DB 22 (NO in step S22), the mail transfer unit 14 registers the destination mail address, message ID, and keyword in the address book DB 22 based on the previously acquired telephone number ( Step S23). In other words, it is determined that an incoming call is permitted if it is a partner who has normally sent a mail, and a mail address or the like is registered in the address book DB 22.

  On the other hand, when the destination e-mail address is registered in the address book DB 22 (YES in step S22), the mail transfer unit 14 obtains the message ID and keyword of the destination e-mail address from the address book DB 22 based on the previously acquired telephone number. Obtained (step S24), and the destination information determination unit 19 determines whether the acquired message ID or keyword matches that of the mail header (step S25).

  When the message ID or keyword acquired from the address book DB 22 matches any of the mail headers (YES in step S25), the mail transfer unit 14 sets a reception prohibition flag corresponding to the destination mail address of the address book DB 22. (Step S26). That is, by sending the same mail twice, it is determined that the destination mail address is set to accept or reject the call, but the same mail contains the same message ID or keyword, so that determination Is possible. In order to determine whether or not to accept an incoming call, the destination prohibition flag in the address book DB 22 is not directly deleted, but the reception prohibition flag is set when the same mail is accidentally transmitted three times. This is to prevent registration as an incoming call permission.

  On the other hand, when the message ID or keyword acquired from the address book DB 22 does not match that of the mail header (NO in step S25), the mail transfer unit 14 clears the reception prohibition flag corresponding to the destination mail address in the address book DB 22 ( Step S27). That is, even if the other party has the reception prohibition flag set, if a new transmission is performed with another mail, it is determined that future incoming calls are permitted, and the reception prohibition flag is cleared.

  In steps S22 to S27 in FIG. 7, the address book DB 22 is accessed based on the subscriber's telephone number, but the address book DB 22 is accessed based on the subscriber's mail address. You can also. In this case, the acquisition of the telephone number from the subscriber information DB 21 in step S21 can be omitted.

  Hereinafter, the operation of the above embodiment will be described in more detail by taking a typical mail transmission / reception operation as an example.

  FIG. 8 is a sequence diagram (part 1) showing an operation at the time of mail reception when the mail address and mail identification information (message ID, keyword) are not registered in the address book DB 22. That is, this is an operation example when mail is received from a person whose mail address or the like is not registered in the address book DB 22 of the mail device 1.

  In FIG. 8, when the user Taro who is the user of the terminal 7 creates and sends a mail addressed to Ichiro who is the user of the mobile terminal 5 (step S101), the mail is the domain of the terminal 7 Is transmitted to the mail apparatus 6 having jurisdiction over (step S102).

  The mail device 6 adds a message ID and transfers the message ID to the mail device 1 having jurisdiction over the domain of Ichiro's mobile terminal 5 (step S103).

  The mail device 1 confirms the presence of the destination mail address (step S104), but here it is assumed that Taro's mail address is not registered in the address book DB 22, so the sender mail address is not registered. (Step S105).

  Therefore, the presence of the reference information is subsequently determined, but since it is not a reply mail, it is confirmed that the reference information does not exist (step S106), and the keyword is also unregistered (step S107).

  Accordingly, the mail device 1 notifies the mail device 6 of the fact that the destination is unknown and the content of the transmitted mail (step S108), and the mail device 6 transmits a mail combining the unknown destination message and the content of the transmitted mail to the terminal 7. (Step S109).

  FIG. 9 is a sequence diagram (part 2) showing the operation at the time of mail reception when the mail address and mail identification information (message ID, keyword) are not registered in the address book DB 22. That is, this is an operation example in the case where a mail address or the like is not registered in the address book DB 22 of the mail apparatus 1 although it is a reply to the mail received previously. This corresponds to a case where a mail received before the service of the present invention is started and returned after the service is started.

  In FIG. 9, when Taro who is the user of the terminal 7 is addressed to Ichiro who is the user of the mobile terminal 5, a reply to the previously received mail from Ichiro is performed (step S111). This mail is transmitted to the mail device 6 that manages the domain of the terminal 7 (step S112). In this case, reference information (the content is the message ID of the mail that is the basis of the reply) indicating that it is a reply is added.

  The mail device 6 adds a message ID and transfers the message ID to the mail device 1 having jurisdiction over the domain of Ichiro's mobile terminal 5 (step S113).

  The mail device 1 confirms the presence of the destination mail address (step S114), but here it is assumed that Taro's mail address is not registered in the address book DB 22, and therefore the sender mail address is not registered. (Step S115).

  Therefore, the presence of reference information is subsequently determined, and since it is a reply mail here, the presence of reference information is confirmed (step S116). However, since it is assumed here that the mail identification information is not registered in the address book DB 22 of the mail apparatus 1, it is confirmed that the reference information is not registered in the subsequent processing (step S117).

  Accordingly, the mail device 1 notifies the mail device 6 of the fact that the destination is unknown and the content of the transmitted mail (step S118), and the mail device 6 transmits a mail combining the content of the unknown destination message and the transmitted mail to the terminal 7. (Step S119).

  FIG. 10 is a sequence diagram (part 1) showing an operation at the time of mail transmission / reception when a reply is made to a transmission mail. This example is a case where it can be determined that the reply mail is appropriate based on the message ID.

  In FIG. 10, when a mail is created and sent to Mr. Taro, who is the user of the terminal 7, from Ichiro, who is the user of the mobile terminal 5 (step S <b> 121), this mail is sent to the mobile terminal 5. It is transmitted to the mail apparatus 1 that has jurisdiction over the domain (step S122).

  The mail device 1 adds a message ID and transfers the message ID to the mail device 6 having jurisdiction over the domain of Mr. Taro's terminal 7 (step S123).

  The mail device 6 confirms the presence of the destination and then distributes mail (including registration in the mail box) (step S124).

  On the other hand, in parallel with the above processing, the mail device 1 confirms that the destination mail address is not registered in the address book DB 22 (step S125), and registers the destination mail address, message ID, and keyword in the address book DB 22. (Step S126).

  After a while, when Mr. Taro who is a user of the terminal 7 changes the mail address and replies to the mail previously received from Ichiro with a new mail address (step S127), this mail Is transmitted to the mail device 6 that manages the domain of the terminal 7 (step S128). In this case, reference information (the content is the message ID of the mail that is the basis of the reply) indicating that it is a reply is added.

  The mail device 6 adds the message ID and transfers the message ID to the mail device 1 having jurisdiction over the domain of Ichiro's mobile terminal 5 (step S129).

  The mail device 1 confirms the presence of the destination mail address (step S130), but since Taro has replied with the new mail address after the change, the sender mail address is not registered in the address book DB 22. This is confirmed (step S131).

  Therefore, the presence of reference information is subsequently determined, and since it is a reply mail here, the presence of reference information is confirmed (step S132).

  Subsequently, it is determined whether or not the reference information is registered in the address book DB 22. However, since the message ID is registered in the address book DB 22 at the time of transmission of mail from Mr. Ichiro who is the origin of this reply mail (step S126). Then, it is confirmed that the reference information is registered in the address book DB 22 (step S133).

  Therefore, it is judged that the reply mail may be allowed to be received, the sender mail address is newly registered in the address book DB 22 (step S134), and the reply mail is received in the area of Mr. Ichiro who is the destination of the mail box 23. The mail is registered (step S135) and distributed to the mobile terminal 5 (step S136).

  FIG. 11 is a sequence diagram (part 2) showing an operation at the time of mail transmission / reception when a reply is made to a transmission mail. This example is a case where it is determined that the reply mail is appropriate by the keyword.

  In FIG. 11, when Ichiro, who is the user of the mobile terminal 5, creates and sends a mail addressed to Taro, who is the user of the terminal 7 (step S <b> 141), this mail is sent to the mobile terminal 5. It is transmitted to the mail apparatus 1 having jurisdiction over the domain (step S142). Here, in order to show the function of the keyword, a part of the mail text (Body) registered as the keyword is also shown.

  The mail device 1 adds a message ID and transfers the message ID to the mail device 6 having jurisdiction over the domain of Mr. Taro's terminal 7 (step S143).

  The mail device 6 confirms the presence of the destination and then distributes the mail (including registration in the mail box) (step S144). Here, it is assumed that the mail device 6 does not transfer the message ID for the received mail and further does not transfer the reference information when replying, and does not include the message ID. .

  On the other hand, in parallel with the above processing, the mail device 1 confirms that the destination mail address is not registered in the address book DB 22 (step S145), and registers the destination mail address, message ID, and keyword in the address book DB 22. (Step S146). The string to be registered as a keyword, here, "Hello.".

  Then, after a while, Taro who is a user of the terminal 7 changes the e-mail address and replies to the e-mail previously received from Ichiro with a new e-mail address (step S147). Is transmitted to the mail device 6 that manages the domain of the terminal 7 (step S148). In this case, as described above, valid reference information indicating a reply is not included.

  The mail device 6 adds the message ID and transfers the message ID to the mail device 1 having jurisdiction over the domain of Ichiro's mobile terminal 5 (step S149).

  The mail device 1 confirms the existence of the destination mail address (step S150), but since Taro has replied with the new mail address after the change, the sender mail address is not registered in the address book DB 22. This is confirmed (step S151).

  Therefore, the presence of reference information is subsequently determined, but since the mail device 6 does not transfer the reference information, it is confirmed that the reference information does not exist (step S152).

  Therefore, it is subsequently determined whether or not the keyword is registered in the address book DB 22, but a part of the mail text is registered as a keyword in the address book DB 22 when the mail from Ichiro who is the source of this reply mail is sent (step) S146), it is confirmed that the keyword is registered in the address book DB 22 (step S153).

  Therefore, it is determined that this reply mail may be allowed to be received, the sender mail address is newly registered in the address book DB 22 (step S154), and the mail is received in the area of Mr. Ichiro who is the destination. The mail is registered (step S155) and distributed to the mobile terminal 5 (step S156).

  FIG. 12 is a sequence diagram (part 1) showing an operation of prohibiting reception of a mail address registered in the address book DB 22. That is, in this example, the same mail is transmitted twice, and the destination mail address is set to reception prohibition.

  In FIG. 12, when Ichiro who is the user of the portable terminal 5 performs the same mail re-transmission operation to Taro who is the user of the terminal 7 (step S161), the mail is sent to the portable terminal 5 as shown in FIG. Is sent to the mail apparatus 1 having jurisdiction over the domain (step S162). Here, since it is retransmission, the same message ID added at the time of the previous transmission is included.

  The mail device 1 does not add any further message ID, and transfers it to the mail device 6 having jurisdiction over the domain of Mr. Taro's terminal 7 (step S163).

  The mail device 6 confirms the existence of the destination and then distributes the mail (including registration in the mail box) (step S164). If there is no need to inform the other party that reception is prohibited, distribution may not be performed.

  On the other hand, in parallel with the above processing, the mail device 1 determines whether or not the destination mail address is registered in the address book DB 22, but it is registered because the destination mail address is registered at the first transmission. Is confirmed (step S165).

  Subsequently, it is determined whether the message ID matches the registered message ID. However, since the same mail is retransmitted, it is confirmed that the message ID matches (step S166).

  Accordingly, the reception prohibition flag corresponding to the destination mail address in the address book DB 22 is set (step S167). Thereby, thereafter, the incoming call is rejected until the reception prohibition flag is cleared.

  FIG. 13 is a sequence diagram (part 2) illustrating an operation of prohibiting reception of a mail address registered in the address book DB 22. Here, it is an example in which it is determined that retransmission is performed based on a keyword match.

  In FIG. 13, when Ichiro who is the user of the portable terminal 5 performs the same mail re-transmission operation to Taro who is the user of the terminal 7 (step S171), the mail is sent to the portable terminal 5 as shown in FIG. Is sent to the mail apparatus 1 having jurisdiction over the domain (step S172). Here, in order to show the function of the keyword, a part of the mail body (Body) registered as a keyword is also shown, but since it is a re-transmission, the same keyword as the previous transmission is included.

  The mail apparatus 1 adds the message ID and transfers it to the mail apparatus 6 having jurisdiction over the domain of Mr. Taro's terminal 7 (step S173).

  The mail device 6 confirms the existence of the destination and then distributes the mail (including registration in the mail box) (step S174). If there is no need to inform the other party that reception is prohibited, distribution may not be performed.

  On the other hand, in parallel with the above processing, the mail device 1 determines whether or not the destination mail address is registered in the address book DB 22, but it is registered because the destination mail address is registered at the first transmission. Is confirmed (step S175).

  Subsequently, it is determined whether or not the keyword matches the registered keyword. However, since the same mail is retransmitted, it is confirmed that the keyword matches (step S176).

  Accordingly, the reception prohibition flag corresponding to the destination mail address in the address book DB 22 is set (step S176). Thereby, thereafter, the incoming call is rejected until the reception prohibition flag is cleared.

  The present invention has been described above by the preferred embodiments of the present invention. While the invention has been described with reference to specific embodiments, various modifications and changes may be made to the embodiments without departing from the broad spirit and scope of the invention as defined in the claims. Obviously you can. In other words, the present invention should not be construed as being limited by the details of the specific examples and the accompanying drawings.

It is a block diagram of the mail system concerning one Embodiment of this invention. It is a block diagram of a mail apparatus. It is a logical block diagram of subscriber information DB. It is a logical block diagram of address book DB. It is a flowchart which shows the operation | movement at the time of mail reception of a mail apparatus. It is a flowchart which shows the operation | movement at the time of mail reception unknown mail of a mail apparatus. It is a flowchart which shows the operation | movement at the time of mail transfer of a mail apparatus. FIG. 10 is a sequence diagram (part 1) illustrating an operation at the time of mail reception when a mail address and mail identification information are not registered in the address book DB. It is a sequence diagram (the 2) which shows the operation | movement at the time of mail reception when a mail address and mail identification information are not registered into address book DB. It is a sequence diagram (the 1) which shows the operation | movement at the time of mail transmission / reception when a reply is made | formed with respect to a transmission mail. FIG. 11 is a sequence diagram (part 2) illustrating an operation at the time of mail transmission / reception when a reply is made to a transmission mail. It is a sequence diagram (the 1) which shows the operation | movement which prohibits reception of the mail address registered into address book DB. It is a sequence diagram (the 2) which shows the operation | movement which prohibits reception of the mail address registered into address book DB.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mail apparatus 10 Control part 11 Transmission / reception part 12 Destination domain determination part 13 Mail reception part 14 Mail transfer part 15 Error mail generation part 16 Message ID generation part 17 Mail header acquisition part 18 Source information determination part 19 Destination information determination part 2 Memory | storage Part 21 Subscriber information DB
22 Address book DB
23 Mailbox 3 Communication Network 4 Base Station 5 Mobile Terminal 6 Mail Device 7 Terminal

Claims (5)

Storage means for registering e-mail addresses that are permitted to receive calls;
Means for registering the destination mail address in the storage means when forwarding outgoing mail;
Means for permitting an incoming call when the mail address registered in the storage means when the mail is received includes the mail address of the received mail ;
A mail apparatus comprising: means for deleting a destination mail address of the transmission mail from the storage means when the transmission mail is returned because the destination is unknown . Storage means for registering an e-mail address and e-mail identification information that are permitted to be received;
Means for registering the destination mail address and mail identification information of the outgoing mail in the storage means when forwarding the outgoing mail;
When receiving an email, if the email address registered in the storage means includes the email address of the received email, or the email sent from the email address registered in the storage means And means for permitting an incoming call when the mail identification information of the received mail is included in the mail identification information registered in the storage means when the address is not included. Mail device. 3. The mail apparatus according to claim 2 , wherein the mail identification information is a message ID added at the time of transmission of the transmitted mail, or a keyword existing in a title or body of the transmitted mail. Mail apparatus according to any one of claims 2 or 3 comprising means for deleting the destination mail address and mail identification information of the transmitted mail from the storage means when the transmission mail is returned become bouncing . A reception prohibition flag provided for each email address registered in the storage means;
Means for setting the reception prohibition flag when the mail identification information of the outgoing mail is included in the mail identification information registered in the storage means;
Mail identification information of the transmission mail according to any one of claims 2 to 4 and means for clearing the reception inhibition flag is not included in the mail identification information registered in the storage means Mail device.

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