JPH03135137A - Mail file control method - Google Patents

Abstract

PURPOSE:To operate the system continuously without intermission by switching a destination of mail storage to an alternative file automatically when the quantity of mails exceeds the capacity of a mail file. CONSTITUTION:A mail transmission/reception section 3 classifies mails received from a communication management section 2 by types of mails and gives them to a mail file control section 4, in which mail attribute information is segmented and the mail attribute information is transferred to a mail system management section 5. The management section 5 collates the mail attribute information with the information of a mail file information table 91 to discriminate whether or not the mail is able to be stored in a mail file 7. The mail attribute information and the management party or the like are written in the table 91 when the mail is stored in the file 7 and in an alternative file information table 92 when the file cannot be stored because of deficient capacity to revise an environment definition file 9 and to give an alternative file storage permission command to an alternative file control section 6. The mail is stored in an alternative file 8 receiving the permission command from the section 6. Thus, the operation mistake is prevented in advance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mail system, and more particularly to a mail file control method.

[Prior Art] In recent years, with the development of the f-mail communication network, the use of e-mail systems in which a host combination and a plurality of terminal devices are connected is progressing.

Conventionally, in this type of mail system, there was no method for automatically restoring the mail file when the mail file size exceeded 70. Therefore.

It was necessary to temporarily suspend the mail system, prepare one alternative file, and then restart the mail system. Alternatively, a maintenance program had to be started in response to a warning message that predicted a mail file overflow.

[Problems to be Solved by the Invention] However, the above-mentioned conventional mail file control method requires manual intervention, and there is a problem in that it is difficult to reliably prevent interruptions in the mail system. It is a solution to a conventional problem,
The purpose of this invention is to provide an excellent mail file control method that allows the mail system itself to automatically restore mail files.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an environment definition file having a mail file information table and an alternative file information table, a mail file, and a mail file overflowing from the mail file. a mail file control section that controls the flow of mail and accesses the mail file, an alternative file control section that accesses the substitute file, and the environment definition 7I/I/l- and a mail system management unit that accesses and determines the storage location of mail when storing mail, and checks the storage location of mail when retrieving mail, so that the mail file does not overflow and is stored in the alternative file. It is configured to automatically change the number of emails to be stored.

[Operation] Since the present invention is configured as follows, when the amount of mail exceeds the capacity of the mail file.

Since the mail storage destination is automatically switched to an alternative file, the system can be operated continuously without interruption.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an L1 mail system to which the mail file control method of the present invention is applied. In the first cause, 1
Reference numeral 0 denotes a terminal device for sending or receiving mail, and each terminal device is connected to the host combination server 1 through a communication port 511. The communication management section 2 is configured to be connected to the communication line 11 and the mail transmitting/receiving section 3, and controls mail communication according to a data transmission procedure. The mail sending/receiving section 3 is configured to be connected to the communication management section 2 and mail/I/file control section 4, and sorts a large number of mails input from the communication management section 2 and passes them to the mail 7 isle control section 4. Also.

The mail received from the mail file control section 4 is sorted by destination and delivered to the communication management section 2. The mail 7 isle control unit 4 includes a mail sending/receiving unit 3, a mail system management unit 51, an alternative file control unit 6. and mail7i) v7, and controls the storage and retrieval of mail in the mail file 7. The mail system management section 5 includes the mail 7 eye control section 41 and the alternative 7 isle control section 6. and an environment definition file 9, manages the environment definition file 9, and transfers information of the environment definition file 9 between the mail file control section 4 and the alternative 7-isle control section 6. The alternative file control unit 6 is the mail file control unit 4. Mail system management department 5 and alternative 7 isles 8
1. Store mail in alternative file 8.

Control extraction. The mail file 7 is a main file for storing mail, and is configured to be connected to the mail 7i control section 4. The alternative file/I/8 is configured to be connected to the alternative file control unit 6.

This is a backup file for storing mail in case the mail file 7 overflows. The environment definition file 9 is configured to be connected to the mail system management section 5 and consists of a mail file information table 91 and an alternative file information table 92 that describe attributes regarding the mail 7 isle 7 and the alternative 7 isle 8.

Next, the operation of the above embodiment will be explained with reference to a flowchart. FIG. 2 is a flowchart regarding mail reception processing.

(Step 11) The mail transmitting/receiving section 3 sorts the mail received from the communication management section 2 by mail and passes it to the mail file control section 4.

(Step 12) The mail file control unit 4 extracts mail attribute information such as the sender's name, addressee, date and time of reception, mail size, confidential information, storage date, etc. from the received mail, and the mail system management unit 5 Pass attribute information to.

(Step 13) The mail system management section 5 checks the mail file information tape /L/91 based on the attribute information to determine whether it can be stored in the mail file 7. Update the environment definition file 9 by writing the attribute information and management information such as the mail number and management classification into the mail file information table 91 if it can be stored, and into the alternative file information table 92 if it cannot be stored due to insufficient capacity. do.

(Step 14) If the mail file can be stored in the mail file 7, the management information and storage permission command are passed to the mail file control unit 4. If the mail file cannot be stored in the mail file 7, the management information and the storage permission command are passed to the alternative file control unit 6. Pass the command.

(Step 15) Receives a storage permission command from the mail system management section 5 and stores the mail money in the mail file 7.

(Step 16) Receives a storage permission command from the alternative 7 isle control unit 6 and stores the mail in the alternative file 8.

Next, the operation in response to a mail reference request will be explained based on the flowchart of FIG.

(Step 21) The mail sending/receiving section 3 examines the information received from the communication management section 2, and determines the origin of the request for the mail. ! The mail request information and the like are passed to the mail file control section 4.

(Step 22) The mail file control section 4 inquires of the mail system management section 5 whether the mail requested by the mail transmission/reception section 3 is stored.

(Step 23) In response to the inquiry from the mail file control unit 4, the mail system management unit 5 checks the mail file information table 91 and the alternative file information table 92t to find the file in which the email is stored, management information, and attribute information. is sent to the mail file control unit 4.

(Step 24) The email storage file is mail file 7
If so, retrieve the requested mail from your mail file.

(Step 25) If the mail storage file is alternative file 8, the requested mail is extracted from one alternative file 8.

(Step 26) Pass the retrieved mail to the mail sending/receiving section 3, and the mail sending/receiving section 3 confirms that the passed mail is the requested mail, attaches the name of the requesting terminal device, and passes it to the communication management section 2. The email is sent to the requesting terminal device.

In this way, in the mail system of the present invention, when the mail file overflows, switching is automatically performed to use the seven alternative files.

[Effects of the Invention] According to the present invention, as is clear from the above embodiment, when the amount of mail exceeds the capacity of the mail file, the storage destination of the mail is automatically switched to an alternative file. Therefore, the system can be operated continuously without interruption, and since there is no human intervention, the system can be operated continuously.
This has the advantage of being able to prevent mistakes.

[Brief explanation of the drawing]

FIG. 1 is a block diagram when a mail file control method according to an embodiment of the present invention is applied to a mail system, FIG. 2 is a flowchart regarding mail reception processing, and FIG. 3 is a 70-70 diagram regarding mail reference request processing. It is a chart diagram. l...Host;/Vieta, 2...Communication management section, 3
...Mail sending/receiving section%4...Mail file control section. 5... Mail system management section, 6... Alternative file control section, 7... Mail file, 8... Alternative file. 9...Environment definition file, 91...Mail file information table, 92...Alternative file information table.

Claims (1)

[Claims] In a mail system connected to a plurality of external devices via a communication line, an environment definition file having a mail file information table and an alternative file information table, a mail file, and an alternative file for storing mail overflowing from the mail file. , a mail file control unit that controls the flow of mail and accesses the mail file; an alternative file control unit that accesses the alternative file; and a mail file control unit that accesses the environment definition file and determines the storage destination of the mail when storing the mail. and a mail system management unit that determines where the mail is stored when retrieving the mail, thereby automatically switching to store the mail in the alternative file to prevent the mail file from overflowing. File control method.