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Mail relay server

A relay device, mail technology, applied in electrical components, message/mailbox/notification, network traffic/resource management, etc., can solve problems such as small effect, and achieve the effect of reducing network load

Inactive Publication Date: 2010-12-01
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the short mails exchanged through communication terminals such as mobile phones, the volume of the mail title is larger than that of the mail body, so the effect of compressing only the mail body is small.
Therefore, the method described in Document 1 is less effective

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0035] figure 1 It is an example of system structure. In this figure, symbol 101 is a communication terminal, symbol 102 is a wireless network, symbol 103 is an operator equipment network, symbol 104 is a network such as the Internet, symbol 105 is a mail forwarding server, symbol 106 is a relay device, and symbol 107 is an IMAP server and other mail management servers (hereinafter referred to as IMAP servers). In addition, at least the relay device 106 and the IMAP server 107 are connected via a network capable of handling 8-bit data.

[0036]The communication terminal 101 represents a terminal device capable of data communication such as a mobile phone terminal or a PC, and is connected to a carrier equipment network 103 via a wireless network 102 . The wireless network 102 is a wireless network managed by a mobile phone carrier. The carrier equipment network 103 ...

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PUM

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Abstract

The invention provides a mail relay server, which can solve the problem with mobile phone carriers that increasing mail traffic increases storage capacity of a mail server and network load, a relay server which relays a mail transfer (SMTP communication) and a mail fetch (IMAP communication) is installed in a carrier facility network. The relay server compresses a mail including a header transferred from a mail transfer server, adds a new header to encapsulate the mail, and transmits the encapsulated mail to an IMAP server as a compressed mail. In response to a mail fetch request from a communication terminal, the relay server decapsulates and restores the compressed mail fetched from the IMAP server, and transmits the restored mail to the communication terminal. The relay server changes parameters such as the mail size, so that no inconsistency of IMAP commands occurs in compressing / restoring the mail.

Description

technical field [0001] The present invention relates to a mail relay method. Background technique [0002] Due to the spread of e-mail in mobile phones, a network (carrier equipment network) and mail server group managed by a company (mobile phone carrier) that provides communication services for mobile phones handles a large amount of mail traffic. In recent years, due to the addition of files such as image files and audio files, the size of e-mails has also increased rapidly, and further increases in traffic are expected in the future. In view of the above background, the capacity of the storage device of the mail server and the load on the network have become problems among mobile phone operators. [0003] As a method for reducing the capacity of the storage device of the mail server and the network load, there is a method disclosed in JP-A-8-331173 (Document 1). Document 1 discloses a technique in which the sending side checks whether the compressed e-mail can be decom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/12H04W4/18H04W28/06H04W88/18H04L29/06H04L12/58
CPCH04L69/04H04L29/0604H04L51/066H04L67/2828H04L29/08783H04L67/5651
Inventor 木下雅文神谷俊之小池隆文
Owner HITACHI LTD