JPH11341045A - Electronic mail transfer device, its method and recording medium recording electronic mail transfer control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of disadvantage that unnecessary advertisements or direct mails are sent at the time of disclosing the real address of an electronic(E) mail by an entry to a prize or the like. SOLUTION: Only a virtual address independent of a real address is disclosed as an E mail address, and at the time of receiving an E mail, the real address of a transferred destination corresponding to the virtual address is retrieved from a user data base 205, the E mail is transferred to the transferred destination, and when the number of accumulated transfer mails exceeds the upper limit of transfer frequency, invalidating processing is reserved. The reserved invalidating processing is quickly executed after ending the transfer of the E mail to its real address. When a user requires automatic continuation, a new virtual address is automatically prepared so that an E mail to the new virtual address is transferred to the user's real address.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic mail transfer apparatus and an electronic mail transfer method for transferring an electronic mail with a limited number of uses and a limited period, and a recording medium on which an electronic mail transfer control program is recorded.

[0002]

2. Description of the Related Art Conventionally, there has been a service for transferring an e-mail addressed to a certain address to another address. However, this service does not need to change the e-mail address even if the user moves due to transfer or relocation. In general, unlimited transfer processing has been performed.

[0003]

Generally, an e-mail address is fixedly assigned to each individual in a company or a specific domain. By disclosing this e-mail address (real address) at the time of a questionnaire for a present or an application for a sweepstakes, there is a risk that an unnecessary advertisement or direct mail that is not desired to be sent by e-mail may be sent.

[0004] An object of the present invention is to release only an address (virtual address) independent of a real address and to prevent an e-mail sent to the virtual address from being transmitted only for a certain period of time in order to prevent such disadvantages. Or, to provide an e-mail transfer device, an e-mail transfer method, and a recording medium on which an e-mail transfer control program is recorded, in which an e-mail can be effectively transferred to a real address only until an e-mail arrives a certain number of times. It is in.

The above-mentioned virtual address becomes invalid after a certain period of time or after a certain number of electronic mails have been transferred, and is not used thereafter. From this property,
Hereinafter, this virtual address will be referred to as a “disposable” email address.

[0006]

According to the present invention, a disposable e-mail address that is valid only for a certain period of time or until a certain number of e-mails arrives is used, and this address is used. Since it is combined with a conventional transfer service, it is possible to prevent unnecessary e-mails such as advertisements and direct mails that the user does not want to send.

More specifically, the invention of claim 1 is an electronic mail transfer device for automatically retransmitting an electronic mail transmitted to a virtual address of a mail server to a real address, wherein the electronic mail is transmitted to the virtual address. Counting means for increasing the cumulative number of mails of the retransmitted electronic mail by one each time the transmitted electronic mail is retransmitted to the real address, and determining whether the cumulative number of mails exceeds a preset upper limit value Determining means for determining whether the cumulative email value exceeds the upper limit value by reserving invalidation processing of a virtual address of the destination of the e-mail, and Address revocation processing means for retransmitting an e-mail sent to a user with a real address registered in advance as a destination.

According to the first aspect of the present invention, each time an electronic mail transmitted to a virtual address is retransmitted to a real address, the cumulative number of retransmitted electronic mails is increased by one. It is determined whether the cumulative number of e-mails exceeds a preset upper limit. If the cumulative e-mail value exceeds the upper limit, invalidation processing of a virtual address of an e-mail destination is reserved, and The e-mail transmitted to the address is retransmitted to the real address registered in advance. Here, the meaning of “reservation of virtual address invalidation processing” means that although there is an e-mail currently being forwarded, the virtual address invalidation processing was immediately executed before the processing was completed. Since the e-mail currently being transferred cannot be processed, it corresponds to the content that the virtual address is invalidated after the currently processed e-mail is processed.

According to the first aspect of the present invention, an electronic mail transmitted to a virtual address of a mail server is retransmitted a predetermined number of times to a real address registered in advance (hereinafter, this retransmission is referred to as a transfer for convenience). The most important feature. According to the present invention, it is possible to provide a disposable e-mail address (disposable virtual address) in which the cumulative number of transferred e-mails is limited.

According to a second aspect of the present invention, there is provided an electronic mail transfer apparatus for automatically retransmitting an electronic mail transmitted to a virtual address of a mail server with a real address as a destination. Inspection means for inspecting whether or not the time limit has been exceeded, and, when the current date and time have been detected by the inspection means as being in excess of the expiration date, a process for invalidating the virtual address of the destination of the e-mail is reserved. Address revocation processing means for retransmitting an e-mail transmitted to the virtual address with a real address registered in advance as a destination.

According to the second aspect of the present invention, with the above configuration, it is checked whether or not the current date and time exceeds a predetermined expiration date. The e-mail is resent with the real address registered in advance as a destination. The most important feature of the invention of claim 2 is that the electronic mail is transferred to a real address registered in advance for a certain period of time. According to the present invention, it is possible to provide a disposable e-mail address for a limited use period.

According to a third aspect of the present invention, in an electronic mail transfer device for automatically retransmitting an electronic mail transmitted to a virtual address of a mail server to a real address, the electronic mail is transmitted to the virtual address. Counting means for increasing the cumulative number of emails of the retransmitted email by one each time the email is retransmitted to the real address,
Determining means for determining whether or not the cumulative number of emails has exceeded a preset upper limit value; and a virtual destination of the electronic mail when the determining means determines that the cumulative number of emails has exceeded the upper limit value. First address invalidation processing means for reserving address invalidation processing and retransmitting an e-mail sent to the virtual address to a real address registered in advance; Checking means for checking whether or not a predetermined expiration date has been exceeded; and invalidation processing of the virtual address of the e-mail destination when the checking means detects that the current date and time have exceeded the expiration time. A second address invalidation process for reserving the e-mail and resending the e-mail sent to the virtual address to the real address registered in advance Characterized by comprising a means.

A third aspect of the present invention is a combination of the first and second aspects of the present invention. In other words, according to the third aspect of the present invention, each time an electronic mail transmitted to a virtual address is retransmitted to a real address, the cumulative number of retransmitted electronic mails is increased by one. It is determined whether or not the cumulative number of emails exceeds a preset upper limit value, and if the cumulative email value exceeds the upper limit value, a process for invalidating a virtual address of an e-mail destination is reserved,
The e-mail sent to this virtual address is resent with the real address registered in advance, and it is checked whether the current date and time exceeds a predetermined expiration date. If the expiration date exceeds the expiration date, a reservation process for invalidating the virtual address of the destination of the e-mail is reserved, and the e-mail is retransmitted to the real address registered in advance. Claim 3
The most important feature of the invention is that the e-mail is transferred to a pre-registered real address for a certain number of times and for a certain period. According to the present invention, it is possible to provide a disposable e-mail address in which both the cumulative number of e-mails to be transferred and the usage period are simultaneously limited.

According to a fourth aspect of the present invention, when the invalidation processing of the virtual address of the e-mail is reserved by the address invalidation processing means, it is determined whether or not there is an automatic continuation request for retransmission of the e-mail. Determining means for determining whether the automatic continuation request is present, and if the determining means determines that there is an automatic continuation request, creates a new destination virtual address and invalidates the new virtual address for the retransmission destination of the virtual address to be invalidated. Notification means for designating the same real address as the address and notifying the user of the real address.

According to a fourth aspect of the present invention, in any one of the first to third aspects, when the invalidation processing of the virtual address of the e-mail is reserved, there is an automatic continuation request for retransmission of the e-mail. If there is an automatic continuation request, a new destination virtual address is created, and the new virtual address is designated with the same real address as the retransmission destination real address of the virtual address to be invalidated. Notify the user of the leverage real address. The invention according to claim 4 is that when an e-mail is transferred to a pre-registered address a certain number of times within a certain period and the expiration date has expired or the cumulative number of transferred mails exceeds a predetermined upper limit. The most important feature of this is that it automatically provides a new virtual address (e-mail address). According to the present invention, a disposable e-mail address for a limited number of uses and for a limited time can be automatically updated and continuously provided as desired by the user.

According to a fifth aspect of the present invention, when the invalidation processing of the virtual address of the destination of the electronic mail is reserved, the address invalidation processing means sets the virtual address after processing the electronic mail currently being processed. Is performed.

According to the fifth aspect of the present invention, when the invalidation processing of the destination virtual address of the electronic mail is reserved, the virtual address invalidation processing is performed after the processing of the electronic mail currently being processed is completed. Perform Claim 5
Specifies the timing of the virtual address invalidation processing.

The inventions of claims 6 to 10 are inventions of an electronic mail transfer method corresponding to the processing contents of the above claims 1 to 5, respectively.

That is, according to the invention of claim 6, in an electronic mail transfer method for automatically retransmitting an electronic mail transmitted to a virtual address of a mail server to a real address, the electronic mail is transmitted to the virtual address. A counting procedure for incrementing the cumulative number of mails of the retransmitted electronic mail by one each time the received electronic mail is retransmitted to the real address, and determining whether the cumulative number of mails exceeds a preset upper limit value. A determining step of determining, and, when determining in step (a) that the cumulative mail value exceeds the upper limit value, reserves a process of invalidating a virtual address of the destination of the e-mail and transmits the e-mail to the virtual address. Address revocation processing for retransmitting the received e-mail with a real address registered in advance as a destination.

According to a seventh aspect of the present invention, in an electronic mail transfer procedure for automatically retransmitting an electronic mail transmitted to a virtual address of a mail server to a real address, a current date and time are predetermined. A check procedure for checking whether or not the expiration date has expired, and a process for invalidating the virtual address of the e-mail destination when the current procedure has detected that the current date and time has exceeded the expiration time. Address revocation processing for retransmitting the e-mail transmitted to the virtual address with the real address registered in advance as a destination.

Further, the invention according to claim 8 is an electronic mail transfer method for automatically retransmitting an electronic mail transmitted to a virtual address of a mail server to a real address, wherein the electronic mail is transmitted to the virtual address. A counting procedure for incrementing the cumulative number of mails of the retransmitted electronic mail by one each time the received electronic mail is retransmitted to the real address, and determining whether the cumulative number of mails exceeds a preset upper limit value. A determining step of determining, and, when determining in the determining step that the cumulative mail value exceeds the upper limit value, reserves a process of invalidating a virtual address of the destination of the e-mail and transmits the e-mail to the virtual address A first address invalidation processing procedure for retransmitting the received e-mail with a real address registered in advance as a destination, and the current date and time are predetermined. A check procedure for checking whether or not the expiration date has expired, and a process for invalidating the virtual address of the e-mail destination when the current procedure has detected that the current date and time has exceeded the expiration time. And a second address invalidation procedure for retransmitting the e-mail transmitted to the virtual address with the real address registered in advance as a destination.

Further, preferably, when the invalidation processing of the virtual address of the destination of the electronic mail is reserved in the address invalidating procedure, it is determined whether or not there is an automatic continuation request for retransmission of the electronic mail. In the determination procedure, when it is determined in the determination procedure that there is the automatic continuation request, a virtual address of a new destination is created, and the new virtual address is the same as the real address of the retransmission destination of the virtual address to be invalidated. And notifying the user of the real address by designating the real address.

Further, preferably, the address invalidation processing procedure is such that when the invalidation processing of the virtual address of the destination of the electronic mail is reserved, the virtual address is invalidated after the processing of the electronic mail currently being processed is completed. Perform processing.

[0024] The inventions of claims 11 to 15 are inventions of recording media, characterized by recording control programs corresponding to the contents of the inventions of claims 1 to 5, respectively.

That is, the invention of claim 11 is a recording medium recording a control program for transferring an electronic mail by a computer, and the control program is transmitted to the computer to a virtual address of a mail server. Each time the e-mail is retransmitted to the real address, the mail accumulation number of the retransmitted e-mail is increased by one, and it is determined whether or not the mail accumulation number exceeds a preset upper limit value, When it is determined that the mail accumulated value exceeds the upper limit, the e-mail destination virtual address invalidation processing is reserved, and the e-mail transmitted to the virtual address is registered in advance. The retransmission is performed with a real address as a destination.

According to a twelfth aspect of the present invention, there is provided a recording medium recording a control program for transferring an electronic mail by a computer, wherein the control program causes the computer to make the current date and time exceed a predetermined expiration date. If the current date and time exceeds the expiration date, it is reserved to invalidate the virtual address of the e-mail destination, and the e-mail is sent to the virtual address. The electronic mail is retransmitted with a real address registered in advance as a destination.

According to a thirteenth aspect of the present invention, there is provided a recording medium recording a control program for transferring an electronic mail by a computer, wherein the control program transmits the electronic mail transmitted to the virtual address of the mail server to the computer. Each time a mail is resent to a real address, the mail accumulation number of the retransmitted e-mail is increased by one, and it is determined whether the mail accumulation number exceeds a preset upper limit value. When it is determined that the accumulated value exceeds the upper limit value, a process of invalidating the virtual address of the destination of the e-mail is reserved, and the e-mail transmitted to the virtual address is registered in the real address registered in advance. Is re-sent as a destination, and it is checked whether or not the current date and time exceeds a predetermined expiration date. If it is detected that the expiration date has expired, a process for invalidating the virtual address of the e-mail destination is reserved, and the e-mail sent to the virtual address is sent to the real address registered in advance. Is retransmitted.

According to a fourteenth aspect of the present invention, the control program causes the computer to determine whether or not there is a request for automatic continuation of retransmission of the electronic mail when the invalidation processing of the virtual address of the electronic mail is reserved. If it is determined that there is an automatic continuation request, a virtual address of a new destination is created, and the new virtual address is specified as the real address of the retransmission destination of the revoked virtual address. Then, the user of the real address is notified.

According to a fifteenth aspect of the present invention, when the control program reserves, in the computer, a process of invalidating the virtual address of the destination of the electronic mail, after the processing of the electronic mail currently being processed is completed, The invalidation process is performed.

[0030]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows the overall configuration of hardware necessary for an embodiment of the present invention. The network interface 101 is necessary for transmitting or receiving an e-mail from a communication network (for example, a public telephone line). Upon receiving the e-mail via the network interface 101, the control device 102 searches the storage device 103 for a transfer destination address (retransmission destination real address) corresponding to the e-mail address (the virtual address of the mail server). The e-mail is forwarded to the searched forwarding destination (the e-mail sent to the virtual address is resent with the real address as the destination), and the count of the transferred e-mails and the cumulative number of e-mails are checked. And expiration date check, and invalidation processing of the e-mail address (virtual address). The storage device 103 records a transfer destination address (real address of a retransmission destination), an expiration date, a transfer count upper limit, and an accumulated number of transferred mails.

FIG. 2 shows the electronic mail transfer apparatus of FIG.
(Central Processing Unit) A hardware configuration realized by using 201 will be described. In FIG. 2, a memory 202, a network interface 203, and a hard disk 204 are connected to a CPU 201 that controls overall control via a bus 210. Hard disk 204
Stores a user database 205, a mail service program 206, a transfer expiration check program 207, a transfer count program 208, and an address update program 209.

When an e-mail is received through the network interface 203, the mail service program 206 sets the transfer destination address (retransmission destination real address) corresponding to the e-mail address (virtual address of the mail server) in the user database. Search from step 205,
The e-mail is transferred to the searched transfer destination, and the transfer count program 208 increments the count value of the transferred mail cumulative number counter of the e-mail address. The count value of the mail cumulative number counter represents the cumulative number of emails transmitted to the email address (virtual address) (mail cumulative number).

If the cumulative number of mail counters exceeds a predetermined upper limit of the number of transfer times (the upper limit of the cumulative number of mails) which is a threshold value, the e-mail address (virtual address)
Performs invalidation processing assuming that the expiration date has expired. However, if the invalidation processing is performed immediately, the received e-mail cannot be transferred. Therefore, the invalidation processing is reserved so that the invalidation processing is performed after transferring the e-mail. The reserved invalidation process is performed immediately after the transfer of the electronic mail to the real address is completed. In other words, there is an e-mail currently being forwarded,
If the invalidation processing of the virtual address is executed immediately before the processing is completed, the e-mail currently being transferred cannot be processed. Perform address invalidation processing.

Further, the transfer term check program 207
Is activated once a day, searches the user database 205, and reserves invalidation processing of an address whose expiration date is older than the current date and time. The reserved invalidation process is performed immediately after the transfer of the current e-mail to the real address is completed.

The address update program 209 is called at any time and performs a process of invalidating a reserved e-mail address (virtual address). If the user of the invalidated e-mail address (user who redistributes the e-mail) wants to continue automatically, a new e-mail address (virtual address) is automatically created and the User database 20 so that e-mail addressed to the new virtual address is forwarded to the user's real address
The contents of No. 5 are set, the expiration date is extended, and the above-mentioned mail cumulative number counter is reset. Finally, a new virtual address is notified to the user. If the user of the e-mail address does not desire automatic continuation, the virtual address is deleted, and the setting is made so that the e-mail addressed to the virtual address is returned to the sender with an unknown destination.

FIG. 3 shows an example of the contents of the user database 205 shown in FIG. The user database 205 includes an address for receiving an external e-mail (e-mail address, that is, a virtual address of a mail server), a destination address for transferring the received e-mail (real address), The cumulative number of emails transferred,
The upper limit of the number of transfers (the upper limit of the cumulative number of emails), the expiration date applied regardless of the number of transfers, and information on whether the automatic continuation is performed when the upper limit of the number of transfers is exceeded or the expiration date expires (Automatic continuity information).

4 to 8 show the processing contents of one embodiment of the present invention.

First, a flowchart of FIG. 4 shows a procedure of an electronic mail transfer process of the mail service program 206 of FIG. When an e-mail arrives from outside, the e-mail service program 206 is called, and a real address of a transfer destination corresponding to the virtual address of the e-mail is searched from the user database 205 shown in FIG. 3 (step 401). Then, the electronic mail is transferred to the searched real address of the transfer destination (step 402).

The flowchart of FIG. 5 shows the procedure of the transfer number counting process of the transfer number counting program 208 of FIG. The transfer count program 208 is called every time an electronic mail arrives. In the transfer number counting program 208, each time an e-mail arrives, the program of FIG.
The cumulative number of mails of the transferred virtual address (destination address) on the user database 205 shown in (1) is increased by 1 (step 501), and the cumulative number of mails of the transferred e-mail exceeds the upper limit of the number of times of transfer. It is determined whether or not the e-mail address (virtual address) has expired if the cumulative number of e-mails exceeds the upper limit of the number of transfer times (step 502). , A reservation for invalidation processing of the address is made (step 503). In other words, if there is an e-mail that is currently being forwarded, but if the virtual address invalidation processing is immediately executed before the processing is completed, the e-mail that is currently being forwarded cannot be processed. Therefore, the address revocation processing is reserved first, and after the e-mail currently being processed has been processed, the virtual address revocation processing by the address update program 209 in FIG. 2 is performed.

The flowchart of FIG. 6 shows the procedure of the transfer expiration date check process of the transfer expiration date check program 207 of FIG. The transfer time limit check program 207 is called once a day, first obtains the current date and time, and obtains the obtained current date and time and the expiration date of each address (virtual address) on the user database 205 in FIG. Compare. If the expiration date is older than the current date and time, an address invalidation process is reserved (step 602). That is,
After processing the e-mail currently being processed, virtual address invalidation processing is performed by the address update program 209 in FIG. This process is called once a day when the expiration date is set on a daily basis.
If the expiration date is called only in units of one month, it may be called once a month.

The flowchart of FIG. 7 shows the procedure of the virtual address invalidation process of the address update program 209 of FIG. The address update program 209 is called at any time when the address invalidation processing is reserved. The address update program 209 is called after the e-mail transfer processing (retransmission to the real address) is completed in order to prevent the transfer destination of the e-mail currently being transferred from being searched for due to the invalidation processing. First, the user database 205 shown in FIG. 3 is searched to determine whether the virtual address (e-mail address) to be invalidated is "automatic continuation" (step 70).
1). If the status is "automatic continuation", a subprogram for address update processing described later is called (step 702). In the case of "no automatic continuation", the virtual address is deleted from the user database 205 in FIG. 3 (step 703). Here, deleting the virtual address means that the e-mail for the virtual address is
This means that the user database 205 is set so as to be returned with an error indicating that the virtual address does not exist.

The flowchart of FIG. 8 shows the procedure of the address update processing of the above-described address update processing subprogram (step 702 of FIG. 7). First, a new virtual address different from the virtual address (e-mail address) to be invalidated is created (step 801). The user database 205 is updated with the new virtual address, and the expiration date of the newly created virtual address on the user database 205 is newly set (step 8).
02), and sets the cumulative number of mails to 0 (initial value) (step 803).

Further, the same real address as before (that is, the real address of the user corresponding to the virtual address subjected to the invalidation process (transfer) so that the e-mail addressed to the virtual address is transferred to the user. (The same real address as the destination) is set in the transfer destination area of the user database 205 (step 804).

Finally, in order to notify the user (transfer destination) that the virtual address has been updated, update information including the new virtual address is notified to the real address of the transfer destination by e-mail (step 805).

By the above-described address updating process, a user who wishes to automatically continue receiving a new e-mail address (virtual) which has not been known to anyone, receives the e-mail a certain number of times, or every time a certain period elapses after creation. Address) can be obtained.

The e-mail address on which the above processing is performed is assumed to be thrown away after being used a certain number of times or after a certain period of time. The user can use it safely even in a certain place.

The term “transfer” in the above description is
Means an operation of resending an e-mail sent to a virtual address of a mail server realizing the present invention with a real address as a destination. In an ordinary mail system on the Internet, a mail is transmitted between a plurality of mail servers and workstations. It is used in a different sense from sequential transfer.

(Other Embodiments) In the above-described embodiment of the present invention, each time an e-mail transmitted to a virtual address is retransmitted to a real address, the mail accumulation of the retransmitted e-mail is repeated. Although the number is increased by one, the present invention is not limited to this, and the upper limit of the number of transfers is set as an initial value, and the e-mail transmitted to the virtual address is retransmitted to the real address every time. A similar effect can be obtained by using a down counter type that subtracts one from the set value.

In the above-described embodiment of the present invention, a virtual address that has reached the upper limit of the number of times of transfer or whose expiration date has expired is invalidated. It has been described that setting of new information is performed in a new memory area with the new virtual address. However, the present invention is not limited to this. Alternatively, the new virtual address may be overwritten on the invalid virtual address. In this case, it is needless to say that the cumulative number of mails is reset and the information of the expiration date is updated as described above.

If the upper limit of the number of transfers is set to a very large value, for example, 1000, in the user database of FIG. 3 even if the program according to the embodiment of the present invention remains as it is, only the expiration date actually works. , On the contrary, a very large value for the expiration date, for example 2222/12
If / 31 or the like is set, only the upper limit of the number of transfers actually works.

Still another object of the present invention is to supply a recording medium (storage medium) recording software program codes for realizing the functions of the above-described embodiments to a system or an apparatus, and to provide the system or the apparatus with the recording medium. A computer (or CPU or MPU) reads and executes a program code stored in a recording medium,
It goes without saying that this is achieved. In this case, the program code itself read from the recording medium realizes the function of the above-described embodiment, and the storage medium storing the program code constitutes the present invention. As a recording medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R,
A magnetic tape, a nonvolatile memory card (IC memory card), a ROM, or the like can be used.

[0053]

As described above, according to the present invention,
Disposable email addresses can be provided that limit the cumulative number of emails transferred.

Further, according to the present invention, it is possible to provide a disposable e-mail address for a limited use period.

Further, according to the present invention, a disposable e-mail address for a limited number of times of use and for a limited time can be updated and provided continuously.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an overall configuration of hardware necessary for an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a hardware configuration when the device in FIG. 1 is implemented using a CPU.

FIG. 3 is a memory map diagram showing an example of contents of a user database of FIG. 2;

FIG. 4 is a flowchart illustrating a processing procedure of a transfer process according to the embodiment of the present invention.

FIG. 5 is a flowchart illustrating a processing procedure for counting the number of transfers according to an embodiment of the present invention.

FIG. 6 is a flowchart showing a processing procedure of an expiration date check according to an embodiment of the present invention.

FIG. 7 is a flowchart showing a processing procedure of an address invalidation processing according to an embodiment of the present invention.

FIG. 8 is a flowchart illustrating a procedure of an address update process called from the address invalidation process according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 Network interface 102 Control device 103 Storage device 201 CPU 202 Memory 203 Network interface 204 Hard disk 205 User database 206 Mail service program 207 Transfer period check program 208 Transfer count program 209 Address update program 210 Bus

Claims (15)

[Claims] 1. An electronic mail transfer device for automatically retransmitting an e-mail transmitted to a virtual address of a mail server to a real address, wherein the e-mail transmitted to the virtual address is transmitted to the real address. Counting means for incrementing the cumulative number of mails of the retransmitted e-mail by one each time the mail is retransmitted to a destination, determining means for determining whether the cumulative number of mails exceeds a preset upper limit value, When the evaluator determines that the cumulative mail value exceeds the upper limit, the e-mail destination virtual address is reserved for invalidation processing, and the e-mail transmitted to the virtual address is reserved in advance. An e-mail transfer device, comprising: address revocation processing means for retransmitting a registered real address as a destination. 2. An electronic mail transfer device for automatically retransmitting an e-mail transmitted to a virtual address of a mail server to a real address, wherein the current date and time exceeds a predetermined expiration date. Checking means for checking whether or not the current date and time exceeds the expiration date; and when the checking means detects that the current date and time exceeds the expiration date, reserves invalidation processing of the virtual address of the e-mail destination, and Address revocation processing means for retransmitting an e-mail sent to a user with a real address registered in advance as a destination. 3. An e-mail transfer device for automatically retransmitting an e-mail sent to a virtual address of a mail server to a real address, wherein the e-mail sent to the virtual address is sent to the real address. Counting means for increasing the cumulative number of emails of the retransmitted email by one each time the email is retransmitted to a destination, determining means for determining whether the cumulative number of emails exceeds a preset upper limit value, When it is determined by the determination unit that the cumulative mail value exceeds the upper limit value, a process for invalidating a virtual address of the destination of the electronic mail is reserved, and the electronic mail transmitted to the virtual address is reserved in advance. First address invalidation processing means for retransmitting a registered real address as a destination, and a current date and time exceeding a predetermined expiration date Checking means for checking whether or not the current date and time exceeds the expiration date. An electronic mail transfer device comprising: a second address invalidation processing unit that retransmits an electronic mail transmitted to an address with a real address registered in advance as a destination. 4. A decision means for judging whether there is an automatic continuation request for retransmission of an e-mail when the address invalidation processing means reserves a process for invalidating a virtual address of the destination of the e-mail. When the determination unit determines that there is the automatic continuation request, a virtual address of a new destination is created, and the new virtual address is the same as the real address of the retransmission destination of the revoked virtual address. 4. The electronic mail transfer device according to claim 1, further comprising a notification unit that specifies an address and notifies a user of the real address. 5. The method according to claim 1, wherein the address invalidation processing means executes a process of invalidating the virtual address of the destination of the electronic mail after the processing of the electronic mail currently being processed is completed. The electronic mail transfer device according to any one of claims 1 to 4, wherein the electronic mail transfer device performs the operation. 6. An electronic mail transfer method for automatically retransmitting an e-mail sent to a virtual address of a mail server to a real address, wherein the e-mail sent to the virtual address is sent to the real address. A counting procedure for incrementing the cumulative number of emails of the retransmitted email by one each time the email is retransmitted to a destination, a determining procedure of determining whether the cumulative number of emails exceeds a preset upper limit value, If it is determined in the determination procedure that the cumulative mail value exceeds the upper limit value, a process of invalidating the virtual address of the destination of the electronic mail is reserved, and the electronic mail transmitted to the virtual address is reserved in advance. An address invalidation procedure for retransmitting a registered real address as a destination. 7. In an electronic mail transfer procedure for automatically retransmitting an electronic mail transmitted to a virtual address of a mail server to a real address, whether the current date and time exceeds a predetermined expiration date. An inspection procedure for inspecting whether or not the current date and time exceeds the expiration date, and when the inspection procedure detects that the current date and time exceeds the expiration date, reserves a process for invalidating the virtual address of the e-mail destination and Address revocation procedure for retransmitting an e-mail sent to a user with a real address registered in advance as a destination. 8. An electronic mail transfer method for automatically retransmitting an e-mail sent to a virtual address of a mail server to a real address, wherein the e-mail sent to the virtual address is sent to the real address. A counting procedure for incrementing the cumulative number of emails of the retransmitted email by one each time the email is retransmitted to a destination, a determining procedure of determining whether the cumulative number of emails exceeds a preset upper limit value, When it is determined in the determination procedure that the cumulative mail value exceeds the upper limit value, a process of invalidating the virtual address of the electronic mail is reserved, and the electronic mail transmitted to the virtual address is reserved in advance. A first address invalidation processing procedure for retransmitting a registered real address as a destination, and a method in which the current date and time exceeds a predetermined expiration date. A check procedure for checking whether or not the current date and time exceeds the expiration date. A second address invalidation processing procedure for retransmitting an e-mail transmitted to an address to a real address registered in advance as a destination. 9. A judging step of judging whether or not there is a request for automatic continuation of retransmission of an e-mail when the e-mail destination virtual address invalidation processing is reserved in the address invalidation processing procedure. When it is determined in the determination procedure that there is the automatic continuation request, a virtual address of a new destination is created, and the new virtual address is the same as the real address of the retransmission destination of the revoked virtual address. 9. The electronic mail transfer method according to claim 6, further comprising a notification procedure of designating an address and notifying a user of the real address. 10. The address invalidation processing procedure, wherein when the invalidation processing of the virtual address of the destination of the electronic mail is reserved, the invalidation processing of the virtual address is performed after the processing of the electronic mail currently being processed is completed. The method according to any one of claims 6 to 9, wherein the method is performed. 11. A recording medium on which a control program for transferring an electronic mail by a computer is recorded. The control program transmits the electronic mail transmitted to the virtual address of the mail server to the real address of the computer. Each time the mail is retransmitted as a destination, the cumulative number of emails of the retransmitted email is increased by one, and it is determined whether the cumulative number of emails exceeds a preset upper limit value. If it is determined that the value exceeds the value, the invalidation processing of the virtual address of the e-mail destination is reserved, and the e-mail transmitted to the virtual address is re-registered with the real address registered in advance as the destination. A recording medium on which an electronic mail transfer control program is transmitted. 12. A recording medium on which a control program for transferring an electronic mail by a computer is recorded, the control program determining whether or not the current date and time exceeds a predetermined expiration date. Inspection, and when it is detected that the current date and time has exceeded the expiration date, a process for invalidating the virtual address of the e-mail destination is reserved, and the e-mail sent to the virtual address is registered in advance. A recording medium on which an electronic mail transfer control program is recorded, wherein the electronic mail transfer control program is retransmitted with the real address set as a destination. 13. A recording medium in which a control program for transferring an electronic mail by a computer is recorded, the control program transmits the electronic mail transmitted to the virtual address of the mail server to the real address of the computer. Each time the email is retransmitted as a destination, the cumulative number of emails of the retransmitted email is increased by one, and it is determined whether the cumulative number of emails exceeds a preset upper limit value. When it is determined that the value exceeds the value, the virtual address of the destination of the e-mail is invalidated, and the e-mail transmitted to the virtual address is retransmitted to the real address registered in advance. And checking whether the current date and time exceeds a predetermined expiration date. If it is detected that the e-mail has been received, a process for invalidating the virtual address of the destination of the e-mail is reserved, and the e-mail transmitted to the virtual address is retransmitted to the real address registered in advance. A recording medium on which an electronic mail transfer control program is recorded. 14. The control program causes a computer to determine whether there is an automatic continuation request for retransmission of an e-mail when a process of invalidating a virtual address of the e-mail destination is reserved. If it is determined that there is a continuation request, a new destination virtual address is created, and the new virtual address is designated by specifying the same real address as the retransmission destination real address of the virtual address to be invalidated. 14. A recording medium on which the electronic mail transfer control program according to claim 11 is notified. 15. The control program, when reserving a process for invalidating a virtual address of the destination of the electronic mail, executes the invalidation process of the virtual address after processing the electronic mail currently being processed. 15. A recording medium on which the electronic mail transfer control program according to claim 11 is recorded.