JPH0470146A - Message replacing system for electronic mail - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] Regarding store-and-forward having an e-mail service, the purpose of reducing the usage of mailbox resources and reducing the amount of e-mail transfer is to provide a reception box for receiving e-mails. In the e-mail storage and exchange system, which consists of a message storage and exchange system on the sending side, which accommodates the sender's terminal, and a message storage and exchange system on the called side, which has a mailbox for the called party and accommodates the called party, the sending message is stored and exchanged. The exchange system is equipped with a memory to temporarily store delivered e-mails, and the e-mails and e-mails received at the reception box are searched by the sender's identification number, and if there is an e-mail that should be corrected in the temporary storage memory. , the e-mail in the reception box is replaced with a correction e-mail, and the corrected e-mail is sent to a mailbox corresponding to the recipient of the message storage and exchange system on the recipient side, replacing the already sent email. .

The sender's message storage and exchange system is provided with means for automatically creating a difference between the uncorrected e-mail and the corrected e-mail, and is configured to replace the mailbox of the recipient with the difference mail.

[Industrial application field]

TECHNICAL FIELD The present invention relates to an e-mail message replacement scheme in a store-and-forward system having an e-mail service.

FIG. 3 shows an example of a store-and-forward system configuration having an e-mail service. In the figure, 41 is a caller terminal, 42
is a public network, 43 is a calling center, 44 is a called terminal,
45 is a public network, and 46 is a called center.

The sender terminal 4I and the receiver terminal 44 are terminals such as personal computers, and can transmit data for personal computer communication stored in a floppy to a destination personal computer terminal via a public network. Calling side center 43 and called side center 4
6 consists of a reception box that receives e-mails from a sender terminal and an e-mail box that stores e-mails sent to a receiving terminal, and stores and exchanges e-mails between each reception box and mailbox. The recipient terminal 44 can confirm receipt of the e-mail by timely retrieving the e-mail stored in the mailbox of the recipient center 46. Therefore, terminals that have subscribed to PC communication can each have their own mailbox capacity in the mailbox section of the center to which they belong. Note that there are cases where the sender terminal and the recipient terminal are housed in the same center, and in that case, e-mails are stored and exchanged between the reception box and mailbox in the same center.

In recent years, as the number of e-mails in the store-and-forward system using the e-mail service described above has increased, there has been a need to prevent e-mails from not reaching their destinations. For this reason, services are provided that prevent unnecessary e-mails from arriving in the mailbox by using a closed service between the sender and the recipient, but once an e-mail is sent within the permissible range of reception conditions, If a part of the email needs to be corrected, the corrected email will be sent again to the same recipient, and the recipient's mailbox will need at least two email spaces. In order to reduce capacity, a correction function for outgoing mail is required.

[Prior Art] FIG. 4 shows a block diagram of a conventional e-mail message replacement system. In the figure, 31 is a storage and forwarding system on the sending side, 32 is a storage and forwarding system on the receiving side, 33 is a reception control unit, 34 is a transfer control unit, 35 is a reception box, 36 is a delivery control unit, 37 is a reception control unit, 38 is a transfer control unit, 3
9 indicates a mailbox.

When transmitting an e-mail from sender terminal A to receiver terminal B, the e-mail from sender terminal A is received by the reception control unit 33 of the sender's storage and forwarding system 31, and the received e-mail is transferred to the recipient terminal B. The e-mail sent by the section 34 to the reception box 35 and received by the reception box 35 is delivered from the delivery control section 36 via the interoffice cable to the reception control section 37 of the store-and-forward system 32 on the receiving side, and the received e-mail is is transferred to the mailbox 39 corresponding to recipient B by the transfer control unit 38. Recipient B is in mailbox 39
It is possible to periodically read e-mails addressed to recipient B stored in , and confirm receipt of e-mails from sender A.

[Problem to be solved by the invention]

In a store-and-forward system that includes a conventional email service, if you send an email that requires correction, or if the service is kept in the store-and-forward system for a long time, such as time-specified delivery, you must cancel the email service immediately. We are currently sending the corrected e-mail again. However, once an email has been sent, it cannot be canceled, so the corrected email is sent again, and the recipient's mailbox stores the original email and the number of emails sent for correction. becomes.

Therefore, if a correction is made to a sent e-mail, the recipient's mailbox will contain the original e-mail and the number of e-mails sent for correction, since there is no service to correct the sent e-mail. Or, a problem may arise in which an e-mail sent for correction is not delivered because the recipient's mailbox is full.

The present invention provides a service that allows the sender to correct the contents of an e-mail once sent, according to the will of the sender, and aims to effectively utilize the capacity of the recipient's mailbox and prevent e-mails from being undelivered.

(Means for Solving the Problems) The principle configuration diagram of the present invention is shown in FIG. is a reception box for receiving e-mails, 4 is a recipient's mailbox, 5 is a memory for temporarily storing delivered e-mails, 6 is an e-mail reception and forwarding section, and 7 is an e-mail search and replace section. , 8 shows a means for automatically creating a difference between an e-mail before correction and an e-mail after correction.

When transmitting an e-mail from sender terminal A to receiver terminal B, the message storage and exchange system 1-, which accommodates sender terminal A, requests transmission of the message. The message storage and exchange system 1 temporarily stores the e-mail sent from the sender terminal A in a reception box 3, and delivers it to the message storage and exchange system 2 that accommodates the recipient terminal B via an interoffice cable. The message storage and exchange system 2 stores e-mails delivered from the message storage and exchange system 1 in the recipient's mailbox 4.

The sender's message storage and exchange system 11 is provided with a memory 5 for temporarily storing e-mails that have already been delivered, searches for e-mails received at the reception box 3 using the sender's identification number,
If there is an e-mail to be corrected in the temporary storage memory 5, the e-mail in the reception box 3 is replaced with the e-mail for correction, and the corrected e-mail is sent to the mailbox 4 corresponding to the recipient and sent 7. Configure it so that it will replace the email that has already been sent.

Means 8 for automatically creating a difference between the pre-correction e-mail and the post-correction e-mail in the message storage and exchange system 1 on the sender side;
is provided, and the mailbox 4 corresponding to the recipient is replaced with the difference mail.

[Operation] When an e-mail is received and forwarded by the reception/forwarding section, the search/replacement section searches for the e-mail in the reception box 3 using an identification number that can uniquely identify the e-mail, and replaces it with a correction e-mail. I do. Furthermore, when there is an e-mail to be corrected in the temporary storage memory 5 in order to reduce the amount of data transferred between systems, the message storage and exchange system 1 automatically creates a difference between the e-mail before correction and the e-mail after correction. 12 and delivers it to the message storage and exchange system 2.

Therefore, if there is an e-mail before correction in reception box 3,
The e-mail is replaced in the reception box 3, and if it does not exist, the e-mail is replaced in the recipient's mailbox 4. If there is no e-mail in the recipient's mailbox 4, the corrected e-mail or differential e-mail is stored in the recipient's mailbox 4△5.

[Embodiment] FIG. 2 shows a block diagram of a Pro 5 according to an embodiment of the present invention. In the figure, 10 is a storage test system on the sending side, 20 is a storage and exchange system on the receiving side, 11 is a reception box, 12 is a temporary storage memory, 13 is a data reception control unit that receives e-mails from subscriber terminals, and 14 is a receiving system. A transfer control unit for transferring e-mail to the reception box, 15 a search control unit for searching the reception box, 16 a replacement control unit for replacing the e-mail in the reception box, and 17 in the temporary storage memory. 18 is a system-to-system e-mail delivery control unit; 19 is difference data; 21 is a recipient's mailbox; Reference numeral 23 indicates an inter-system e-mail reception control section, 23 indicates a transfer control section to a mailbox, 24 indicates a mailbox search control section, and 25 indicates an e-mail replacement control section within the mailbox.

The embodiment will be explained separately into the flow of messages before correction and the flow of messages after correction.

1. Message flow before correction When sending an e-mail from sender terminal A, e-mail a is sent to the message storage and exchange system 10 that accommodates A, and the storage and exchange system 10 sends the e-mail a to the in-system reception box 1.
Temporarily accumulate to 1. The message storage and exchange system 10 delivers the message to the message storage and exchange system 20 that accommodates the recipient B. Note that after the delivery is completed, the delivered e-mail is stored in the delivered temporary storage memory 12. The message storage and exchange system 20 stores the delivered e-mail in the recipient B's mailbox 21.

2. Message flow for correction When sender terminal A specifies an identification number that can uniquely recognize the sent e-mail for correction and resends e-mail e, the message storage and exchange system 10 accepts the e-mail within the system. The reception box 11 is searched using an identification number that can uniquely recognize the e-mail specified at the time of retransmission in the box 11, and it is determined whether or not the e-mail a exists.

- If e-mail a exists in the reception box 11, the e-mail a in the reception box 11 is replaced with the correction e-mail e.

(2) If the e-mail a does not exist in the reception box 11, the temporary storage memory 12 for the delivery method is searched to determine whether or not the e-mail a exists. The email a
If there is a difference e-a between the e-mail a and the correction e-mail e, the difference e-a between the e-mail a and the correction e-mail e is automatically created as a correction e-mail 19 by the difference e-mail automatic creation section 17 and delivered to the storage and exchange system 20.

If the e-mail a does not exist in the temporary memory memo January 2, the correction e-mail e is delivered to the message storage and exchange system 20.

■ When the message storage and exchange system 20 receives a correction e-mail e, it searches the recipient's mailbox 21 using an identification number that can uniquely recognize the e-mail a specified at the time of resending, and checks if the e-mail a exists. If you wish to do so, please send e-mail a and correction e-mail in mailbox 21.
or correct the e-mail in the mailbox 21 to e.

■ If the e-mail a does not exist in the mailbox 21, the correction e-mail e is sent to the mailbox 21.
Accumulate into.

Note that the temporary storage memory 12 stores e-mails for a certain period of time or a certain capacity.

〔Effect of the invention〕

As described above, according to the present invention, a message sent by e-mail can be corrected, thereby reducing the amount of resources used for the recipient's mailbox and making it possible to prevent e-mails from being undelivered. Further, by providing a temporary storage memory for sent e-mails in the message storage and exchange system and creating differential e-mails, it is possible to reduce the amount of data transferred between systems.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the principle of the present invention, FIG. 2 is a block diagram of an embodiment, FIG. 3 is an example of a message storage/exchange system configuration, and FIG. 4 is a block diagram of a conventional example. 1.10.31 is the originating store and forward system, 2.20.32 is the terminating store and forward system, and 3゜IL
35 is a reception box, 4.2I, 39 is a recipient's mailbox, 5 and 12 are temporary storage memories, 6 is a reception transfer unit, and 7
8 and 17 are differential data automatic creation means, 1
3.22.33.37 is the reception control section, 14.23゜3
4, 38 are transfer control units, 15.24 are search control units, 16
25 is a replacement control unit, 18.36.38 is a delivery control unit, 1
9 is differential data, 41 is a caller terminal, 42, 45 is a public network, 43 is a caller center, 44 is a receiver terminal, and 46 is a receiver center.

Claims (2)

[Claims] (1) A message storage and exchange system on the sending side that has a reception box for receiving e-mail and accommodates the sender terminal, and a message exchange system on the called side that has a mailbox for the recipient and accommodates the recipient. In the e-mail store-and-forward system (1), a memory (1) for temporarily storing e-mails already delivered to the sender's message store-and-forward system (1) is used.
5), the e-mail received at the reception box (3) is searched by the sender's identification number, and the e-mail is stored in the temporary memory (5).
If there is an e-mail that should be corrected, click the corresponding reception box (3).
) is replaced with a correction email, and the corrected email is sent to the receiving party's message storage and exchange system (2)
An e-mail message replacement method characterized in that the e-mail message is sent to a mailbox (4) corresponding to the recipient of the e-mail to replace an already sent e-mail. (2) The sender's message storage and exchange system (1) is provided with means (8) for automatically creating a difference between the pre-correction e-mail and the post-correction e-mail, and the difference e-mail is sent to the mailbox (4) for the recipient. 2. The e-mail message replacement method according to claim 1, wherein: