E-mail filtering method and device thereof

A filtering method and email technology, applied in electrical components, digital transmission systems, transmission systems, etc., can solve the problem of failing to meet the security requirements of users' emails, and achieve the effect of meeting security requirements and improving security.

Active Publication Date: 2013-07-24
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the inventor found in the research that only relying on the gateway to interce

Method used

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  • E-mail filtering method and device thereof
  • E-mail filtering method and device thereof
  • E-mail filtering method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] see figure 2 , which is a flowchart of an embodiment of a mail filtering method of the present invention, the method includes the following steps:

[0069] Step 201: the mail transfer agent receives the mail;

[0070] In the email system, the mail transfer agent is divided into the mail transfer agent of the sender and the mail transfer agent of the receiver. Among them, for the sender's mail transfer agent, it receives the sent mail from the sender's mail client, and transmits the sent mail to the recipient's mail transfer agent through the Internet connection, or, if the sender If a gateway is set up to intercept viruses or spam, the mail transfer agent of the sender can also send the sent mail to the gateway, and then the gateway will transmit the sent mail to the mail transfer agent of the recipient through the Internet connection. As for the mail transfer agent of the recipient, it receives the received mail from the mail transfer agent of the sender, and transm...

Embodiment 2

[0100] The difference between the second embodiment and the first embodiment is that, for the intercepted mail, the mail transfer agent further submits it for review, and determines whether to continue to intercept the mail or transmit the mail according to the review result. see image 3 , which is a flowchart of another embodiment of a mail filtering method of the present invention, the method includes the following steps:

[0101] Step 301: the mail transfer agent receives the mail;

[0102] Step 302: The mail transfer agent extracts key information from the email, and the key information includes any one of attachment type, subject, body, domain name, number of recipients, and sender / recipient information or Any combination of information;

[0103] Step 303: the mail transfer agent judges whether the key information matches the preset filtering condition, if yes, proceeds to step 304, otherwise, proceeds to step 305;

[0104] Step 304: the mail transfer agent intercepts...

Embodiment 3

[0116] Below to Figure 4 The electronic system shown in is a specific application scenario, and details the entire transmission process of the email when the sender sends an email to the receiver in the email system. and see Figure 5 , which is a flowchart of a mail transmission method in the present invention, comprising the following steps:

[0117] Step 501: the sender logs in the sender's mail client MUA1, and composes an email;

[0118] Step 502: MUA1 submits the mail to the mail transfer agent MTA1 of the sender;

[0119] Step 503: MTA1 extracts the text and sender information of the mail from the mail;

[0120] Step 504: MTA1 judges whether the text of the mail contains specific keywords and whether the sender is a specific user, if yes, enter step 505, otherwise, enter step 509;

[0121] Step 505: MTA1 intercepts the email;

[0122] Step 506: MTA1 submits the email intercepted for the first time for approval;

[0123] Step 507: MTA1 receives the approval result...

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PUM

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Abstract

An embodiment of the invention discloses an E-mail filtering method and an E-mail transmission agent, wherein the E-mail filtering method comprises an E-mail transmission agent for receiving an E-mail, the E-mail transmission agent abstracts key information from the an E-mail, the key information comprises an attachment type, a subject, a text, a domain name, addressee number and any one or more combination information in addresser/addressee information, the E-mail transmission agent judges if the key information is matched with a preset filtering condition, if the key information is matched with the preset filtering condition, the E-mail transmission agent intercepts the E-mail, otherwise, the E-mail transmission agent transmits the E-mail. According to the embodiment of the E-mail filtering method and the E-mail transmission agent, safety of the E-mail can be improved.

Description

technical field [0001] The invention relates to the field of computer applications, in particular to a mail filtering method and device. Background technique [0002] An email system generally consists of a mail client and a mail server. The mail client can also be called a mail user agent (MUA, Mail UserAgent), and the mail server consists of a mail transfer agent (MTA, Mail Transfer Agent) and a mail delivery agent (MDA). , Mail Delivery Agent). [0003] Such as figure 1 In the shown email system, when the sender composes a new email by logging into the sender's email client (ie, MUA1), MUA1 sends the new email to the sender's mail transfer agent (ie, MTA1 ), MTA1 obtains the address of the mail transfer agent (that is, MTA2) of the recipient by checking the domain name of the recipient address, MTA1 establishes a TCP connection with MTA2 according to the address of MTA2, and transmits the new mail to MTA2 through the network, in addition , MTA1 will also save the new e...

Claims

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Application Information

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IPC IPC(8): H04L12/58H04L29/06
Inventor 王栋王怀宇吕俊峰刘华
Owner STATE GRID CORP OF CHINA
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