JP2007288703A - Electronic-mail system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic-mail system which protects personal information, such as an electronic-mail address, in the electronic-mail system. <P>SOLUTION: The problem is solved such that: just personal information among electronic-mail data, such as an electronic-mail addresses of a destination address and an addresser are divided into two parts, namely one part of header information and the other part of a mail text; message IDs are added to the both parts respectively; and, while saving the former at the terminal of the transmitted receiver and saving the latter at the mail server, the mail text is displayed according to the indication command by the receiver. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a technique for protecting personal information such as an address and a name on an electronic mail transmission / reception system for a mail user.

Conventionally, as shown in FIG. 10, a mail data file 903 is held in the mail server 900, mail data received from the transmission terminal 910 is stored in a mail box or the like provided for each recipient, and displayed from the reception terminal 920. A mail is displayed on the screen in response to a request. There is an attempt to encrypt and store the e-mail system in order to protect e-mail addresses and the like from unauthorized access from a malicious third party (see, for example, Patent Document 1).
. In addition, the e-mail address is disclosed in the automatic transfer system setting change process so that the user's e-mail transfer settings can be changed easily and quickly while eliminating spoofing, counterfeiting and tampering. A method is described in which an email exchange partner can be easily selected without the need (see, for example, Patent Document 2).

JP 2005-326933 A JP 2005-292920 A

In the above conventional technologies, the address remains in the mail server,
In the former case, the address may be known from the decryption processing of the encryption, and in the latter case from the correspondence of the conversion file for transfer.

An object of the present invention is to realize mail communication in which personal information such as a mail address is protected by an electronic mail system.

E-mail data received by the mail server is divided into two parts, the header information of the personal information such as the transmission destination and sender's mail address, which is a cluster of personal information, and the mail body, and a message ID is added to each. , The former is sent to the recipient ’s terminal,
The latter is saved on the mail server, and the mail text can be displayed by the display request of the recipient.

Since personal information such as an email address is not left in the mail server, personal information can be protected.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an example in which an electronic mail system including a sender terminal 110, a mail server 100, and a receiver terminal 120 according to the present invention is implemented via a network 190.

When the user creates the mail data 210 by the mail creation unit 111 of the sender terminal 110, the address information acquisition unit 112 stores the destination address 211 of FIG. 2 from the address information d111 of the user DB 113 held by the sender terminal. Set the email address of the sender 212 and the subject 2
13 and the mail transmission unit 11 as the mail data 220 after address setting together with the text 214
4 is transmitted to the mail server 100 via the network 190.

In the mail server 100, the received mail data 220 after the address setting is added to the mail data 220 as the header information 3101 of FIG. 3 by the message ID adding unit 101. Further, the mail information separation processing unit 102 converts the mail data 220 into the header information 3101 in FIG. 3 and the mail texts 3102 and 2 by message ID in FIG.
The message ID processing unit 103 stores the message ID-specific mail text 3102 in the message ID-specific mail text file 104 on the mail server 100, and the header information 3101 is received by the header information transmitting / receiving unit 105 at the recipient terminal 120. And stored in the header information file 124 by message ID.

What is stored in the mail server 100 is a mail text file 104 by message ID.
There is no email address that can be used for personal information.

Next, the recipient terminal 120 receives the header information 3101 sent from the mail server 100.
Is received by the header information transmission / reception unit 105, and the user information DB 12 is received by the address information acquisition unit 125.
The address information d121 is referred to from 6 and the address conversion is performed depending on the presence / absence of the caller information, and the header information processing unit 123 stores the address information in the message ID header information file 124. In addition, the mail transmission / reception / display unit 121 can display an incoming mail list in which the destination name 211 and the sender 212 are clearly specified based on the user DB 126 in which the header information 3101 is held in the receiver terminal. Further, when header information 3110 is selected from the mail list, the mail body 214 of the mail server 100 is displayed on the screen by the mail transmission / reception / display unit 121 of the recipient terminal 120, or the unnecessary mail is deleted from the mail deletion unit 122. Can do.

FIG. 2 shows the address information acquisition unit 112 of the sender terminal 110 when the mail data 210 is transmitted.
Describes an example in which address conversion is performed using the address information d111 of the user DB 113.

When the user A creates the mail data 210 addressed to the user S2 at the sender terminal 110, the mail creation unit 111 within the user's sending terminal 110 causes the sender from the address information d111 of the user DB 113 of the sender terminal. Refer to name 1111 and email address 1112
The destination: S2 (211), the user who is the sender: A (212), the mail data 210 comprising the subject 213 which is the mail title and the body 214 which is the mail content is the destination: S
2's email address “wxy@wrd.co.jp”, the sender who is the user: A ’s email address “aaa@qqq.co.jp”, and the destination: S2 ’s email address “wxy@wrd.co” .jp ”221, sender: A's mail address“ aaa@qqq.co.jp ”222 is the mail data 22 after the address change.
Generate 0. Needless to say, even if the transmission destination 211 of the mail data 2 10 is written with a mail address from the beginning, it does not interfere with mail transmission.

This eliminates the need to store the user's email address as personal information in the mail server 100.

FIG. 3 shows the reception of header information 3101 in the mail data 220 and the recipient terminal 120.
An example in which the address information acquisition unit 125 performs address conversion based on the address information d121 of the user DB 126 will be described.

The information of the mail received at the receiver terminal 120 includes the message ID 3111 and the sender, that is, the sender's mail address “aaa@qqq.co.jp” 222 as personal information, the receiver terminal 1
The message ID header information 3101 includes the mail address “wxy@wrd.co.jp” 221 and the subject 213 of S2, which is 20 users and the destination of the call.

Names of the sender A 212 and the destination S 2 as address information are registered by checking the mail address 1212 against the address information d 121 of the user DB 126 held by the receiver terminal 120: A list is displayed on the screen of the display unit 121. It should be noted that when the sender is the destination name 1211 and is not listed in the address information d121 of the user DB 126 held by the receiver terminal, it is obvious that the address of the sender is displayed as it is. .

FIG. 4 is a processing flow until the mail data 210 created by the sender terminal 110 is transmitted.

First, the mail creation unit 111 creates mail data 210 including a subject 213 and a mail body 214 (S401), and selects a destination 211 (S402). If it can be selected, the corresponding address 1112 is fetched from the name 1111 of the address information d111 of the user DB 113 to the destination 211 of the mail data 210 (S403). Next, the sender's address 1112 is also fetched (S405). Then, the mail data 220 is transmitted to the mail server 100 (S406).

If there is no address of the transmission destination 211 in the address information d111 of the user DB 113, the transmission destination 211 inputs the address manually (S404). The sender's address 1112 is also taken in (S405). Then, the mail data 220 is transmitted to the mail server 100 (S406).

  FIG. 5 is a transition diagram of the mail data 220 in the mail server 100.

The mail data 220 to be transmitted from the mail transmitting unit 114 at the sender terminal 110 includes a destination name / mail address 221, a sender name / mail address 222, and the receiver terminal 12.
0 mail transmission / reception / display unit 121 is composed of a mail subject 223 which is the title of the mail displayed in the incoming mail list and a mail body 224 which is the mail content.

In the mail data 220 received by the mail server 100, message ID 1... Message ID n-h 3111 is additionally written by the message ID adding unit 101.

Next, the mail information separation processing unit 102 confirms that the mail data 220 to which the message ID 3111 is added is the mail data 220 to which the message ID 3111 is added, and the header information 310 for each mail message ID to which the message ID 3111 is added.
1. Create a mail ID 3102 by message ID.

FIG. 6 is a processing flow until the mail data 220 is divided and stored in the mail server 100.

The mail data 220 is sent from the sender terminal 110 and arrives at the mail server 100 (S601).

The mail server 100 receives the incoming mail data 220 and adds a message ID 3111 that is a mail serial number as header information 3101 of the mail data 220.

At this time, the mail body 224 is not separated but is combined (S602). Further, the mail data to which the message ID is added includes a mail sender address 221 and a sender address 22.
2 and the header information 3101 included in the mail subject 223 and the mail content itself are separated (S603) so that the mail body 224 can correspond to the message ID 3111 (S603).
S604). The header information 3101 to which the message ID 3111 is added is the transmission destination address 221, the sender name / mail address 222, and the mail subject 223 as the recipient terminal 120.
(S605).

Further, the mail body 3102 for which the header information has been transmitted is stored in the mail body file 104 by message ID (S606).

7 and 8 are processing flows until the user displays the mail text 224 on the recipient terminal 120 or deletes the mail.

The user displays the received mail as a list on the mail reception screen 123 of the recipient terminal 120 (S701).

The user clicks the mail information on the displayed incoming mail list, and the mail body 224 is clicked.
Is displayed (S702, S703)), the message ID 3111 indicates the message I.
The corresponding header information 3110 is extracted from the D-specific header information file 124, and the header information 3101 that is the basis of the mail information for which the display of the mail body 224 is requested is sent to the mail server 100 (S704).

When the mail server 100 receives the header information 3101 (S801), the header information 3
101 is confirmed (S802), and in the case of displaying the mail text, the message ID processing unit 1
03, based on the message ID 3111 of the received header information 3101, the message I
The corresponding mail text 3102 is extracted from the D-specific mail text file 104 by search and verification, and is sent to the recipient terminal 120 as mail data together with the header information 3101 (S80
3, S804). Then, the mail text can be displayed on the recipient terminal 120 (S705).
).

  As another matter, the case of deleting the mail from the recipient terminal 120 is as follows.

When mail information on the incoming mail list displayed on the recipient terminal 120 is clicked and deletion of the mail text 224 is requested (S702, S706), the corresponding header information 3110 is obtained from the message ID header information file 124 by message ID 3111. The header information 3101 that is the basis of the mail information for which the display request of the mail body 224 is requested is sent to the mail server 100 (S707).
When deleting the mail data for the received header information 3110 (S801) (S802)
) According to the deletion instruction of the header information 3101 concerned, the message is deleted from the message ID mail body file 104 based on the message ID 3111 of the header information 3110 (S805).
.

Further, a mail deletion instruction is transmitted to the receiver terminal 120 based on the corresponding header information 3110 (S806), and the corresponding header information 3101 remaining in the receiver terminal is also deleted (S806).
708).

  Thus, personal information can be protected by the mail server 100 and the recipient terminal 120.

FIG. 9 is a processing flow until the header information 3101 is stored in the message ID header information file 124 at the receiver terminal 120.

First, the sender information 222 is searched for the address information d121 from the user DB 126, and if it can be obtained, the header information 3110 incorporating the sender information, if not, the header information 3124 by message ID as the header information 3101 as it is. To store.

2 is an example of an e-mail system described in Embodiment 1 of the present application. In the e-mail system of the present application, when mail data is transmitted, the address conversion is performed using the user DB of the sender terminal. In the electronic mail system of the present application, an example of incoming header information in mail data and address conversion by a user DB of a recipient terminal. In the electronic mail system of this application, it is a processing flow until a sender terminal transmits mail data. In the electronic mail system of the present application, the mail server divides the mail data sent from the sender terminal into the message ID-specific text stored in the mail server and the header information of the mail sent to the receiver terminal and stored. This is an example of storage. In the electronic mail system of the present application, the mail server adds a message ID to the mail data transmitted from the sender terminal and divides the header information of the mail and the text and stores them separately. In the electronic mail system of this application, it is a processing flow of a recipient terminal and a mail server until it displays the text of the incoming mail information currently displayed on the recipient terminal. It is an example of the electronic mail system which also performs the delivery process described in Example 2 of this application. It is a conceptual diagram of an electronic mail system. It is a conceptual diagram of an electronic mail system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Mail server of this invention 101 ... Message ID addition part, 102 ... Mail information isolation | separation processing part, 103 ... Message ID processing part, 104 ... Mail text file classified by message ID, 105 ... Header information transmission / reception part, 110 ... Sender Terminal, 111 ... mail creation unit, 112 ... Address information acquisition unit used for user DB held by sender terminal, 113 ...
User DB held by the sender terminal, 114... Mail transmission unit, d111... Address information in the user DB held by the sender terminal, 1111... Name registered on the sender side, 1
112: Mail address registered on the sender side, 120: Receiver terminal, 121: Mail transmission / reception / display unit, d121: Address information in the user DB held by the receiver terminal, 1
211: Name registered on the receiver side, 1212: Email address registered on the receiver side, 122 ... Email deletion unit, 123 ... Header information processing unit, 124 ... Header information file by message ID, 125 ... Receiver terminal User DB held by the user terminal 126... Address information acquisition unit used for the user DB held by the receiver terminal 190 190 Network 21
0 ... mail data, 211 ... destination name, 212 ... sender, 213 ... subject, 214 ... mail body, 220 ... mail data after address conversion, 221 ... destination name / address, 22
2 ... Source name / address, 3101 ... Header information, 3110 ... Header information after address conversion, 3111 ... Message ID added to header part, 3102 ... Mail text, 9
00 ... conventional mail server, 901 ... acceptance processing unit in conventional mail server, 902 ... distribution processing unit in conventional mail server, 903 ... mail data file, 910 ... sending terminal, 9
20: Receiving terminal.

Claims (6)

Header information and mail including personal information written in the sender's name and mail address, with message IDs added to the mail data created in the sender's terminal and accepted by the mail server in the order of acceptance The body part is separated and a message ID associated with each header information is added to the body. The former is stored separately in the recipient's terminal corresponding to the specified destination, and the latter is stored separately in the mail server. To email system. 2. The message ID added to the header information of the received mail according to claim 1, wherein the recipient selects the display of the mail text from the mail subject received on the terminal and displayed on the screen. Is sent to the mail server, collated and searched with the message ID of the mail text stored in the mail server, and the mail text corresponding to the recipient's terminal is displayed. In the case of the sender / recipient terminal according to claim 1, in the case of a sender / receiver terminal holding a user DB which is a personal information file such as the name, mail address, and address of a user who is a mail user, An e-mail system that makes it possible to display the e-mail address and sender's name on the e-mail creation / transmission unit or e-mail reception display unit when specified and received. In claim 1, when the recipient requests to delete the received mail, the message ID is sent to the mail server among the header information of the mail stored in the recipient's terminal,
An e-mail system in which a mail body is deleted by collating and searching with a message ID stored in a mail server, and then the header information of the mail designated on the recipient's terminal can be deleted. A medium in which a procedure for realizing Claim 1, Claim 2, Claim 3, or Claim 4 is electronically recorded. An apparatus in which a procedure for realizing claim 1, claim 2, claim 3, or claim 4 is electronically recorded.

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