CN1852268B - Junk-mail preventing method and system - Google Patents
Junk-mail preventing method and system Download PDFInfo
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- CN1852268B CN1852268B CN2005101092092A CN200510109209A CN1852268B CN 1852268 B CN1852268 B CN 1852268B CN 2005101092092 A CN2005101092092 A CN 2005101092092A CN 200510109209 A CN200510109209 A CN 200510109209A CN 1852268 B CN1852268 B CN 1852268B
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Abstract
The invention discloses a junk-mail preventing method and system, so as to make the E-mail system of the local area network can defense the junk-mail more comprehensively and accurately. Using configuration information for junk-mails uploaded to the associated server from client ends establishes rules for filtering out junk-mails. Using the filtering rules filters mails received to filter out junk-mails. The invention realizes linkage between server end and client end. The configuration information for junk-mails is from extensive client ends directly so as to guarantee that configuration information is real and effective, and large amount samples are enough. Thus, server end can establishes reasonable rules for filtering out junk-mails.
Description
Technical field
The present invention relates to the mail transfer field, relate in particular to a kind of junk-mail preventing method and system.
Background technology
Along with Internet fast development, it is very general that people use Email to communicate.Yet because the convenience and the economy of Email; The companion's and the spam problem of coming also grows in intensity; Flames such as various yellow information, advertising message, reaction information or user are reluctant the information that receives; Send to subscriber mailbox through Email, had a strong impact on the normal use of user mailbox.Simultaneously because the propagation of a large amount of spams also causes a large amount of Internet resources to expend on these useless resources, sometimes even can make mail server work as machine, communication disruption causes great loss.
For addressing the above problem, main regular method and the blacklist method of adopting carried out the filtration of spam in the prior art, respectively it described below.
The rule method generally is according to the theme or the content of mail mail to be filtered; For example; Can fall the filtrating mail that themes as " advertisement ", but this method only just works to the mail that meets filtering rule, if the filtering rule setting is reasonable inadequately; Just might be able to not spam all be filtered out, also might some normal email be filtered out.
The blacklist method is that the spam source address is added in the list, in the receiving emails process afterwards, judges that whether letter people address is present in the blacklist, if exist, thinks that then it is a spam, filters out it.Obtaining of spam source address can go to lure spam to carry out through setting up the bait e-mail address.The advantage of blacklist method is simple to operate, but shortcoming is to have no treating method for spam letter people vacation or constantly change address.
Shown in Figure 1 is the structural representation of the e-mail system of local area network (LAN) commonly used in the prior art; By visible among the figure; It mainly comprises client, network access equipment and mail server, is that example describes the process of utilizing this system to carry out mail transfer to receive Email below:
E-mail sending sends to this Email according to Simple Mail Transfer protocol (SMTP, Simple Mail Transfer Protocol) mail server of the e-mail system of local area network (LAN) according to the destination address of Email;
Mail server is temporarily stored after receiving this Email;
Client, through the Email of network access equipment downloaded stored from mail server and is read according to the POP3 agreement.
The Anti-Spam product of prior art is divided into hardware Anti-Spam product and software Anti-Spam product two big classes; Wherein hardware Anti-Spam product is mainly mail filtering gateway; Software Anti-Spam product is mainly the filtrating mail software that is installed in mail server side or client, respectively it is explained below.
Shown in Figure 2 is the networking sketch map with email distribution and reception system of mail filtering gateway; This mail filtering gateway is arranged between mail server and the Internet Router; Scan through mail and to filter spam transmission/reception; Its filtering rule is formulated according to the behavior of theme, content and the e-mail sending of mail usually, and the part mail filtering gateway also has the function of virus scan.
The filtrating mail software that is installed in mail server side or client usually only checks that to the mail that receives the filtering rule of filtrating mail software is formulated according to Mail Contents usually, and the mail that receives is checked and mated.For example can be through the information such as keyword in the source address, theme, body matter of inspection mail, identification meets the mail of spam characteristic automatically.
From present Anti-Spam technology and product; Its core mainly is through blacklist being set or setting up the protection that filtering rule carries out spam; The quality of its protection effect depends on the blacklist that is arranged in the spam prevention product or the degree of perfection of filtering rule fully; If it is reasonable inadequately that the blacklist of spam prevention product or filtering rule are provided with, just can accurately not detect spam.
Summary of the invention
The invention provides a kind of junk-mail preventing method and system, so that the defence spam that the e-mail system of local area network (LAN) can be more comprehensive and accurate.
Technical scheme of the present invention comprises:
A kind of junk-mail preventing method comprises step:
A0, client be according to the filtering rule that self is provided with, and the Email that receives is checked and mated, and from the said Email that receives, identifies spam;
A, client are obtained the configuration information of said spam; And the configuration information of said spam reported and this client server associated end, the configuration information of said spam comprises in source address/destination address, subject key words, the content keyword at least;
B, server end are formulated the Spam filtering strategy according to said configuration information;
When C, server end receive Email from network, fall the spam in the said Email that receives according to said Spam filtering policy filtering.
Said server end adopts interrupt mode or inquiry mode to receive the spam configuration information that client reports.
The spam configuration information real-time update Spam filtering strategy that said server end reports according to client.
A kind of Anti-Spam comprises mail server and passes through at least one client that network access equipment is connected with mail server, also comprises: mail detecting unit, configuration information acquiring unit and Security Policy Server;
Said mail detecting unit is connected with said configuration information acquiring unit, is used for according to the filtering rule that is provided with, and the mail that client is received is checked and mated, identifies the spam in the said Email; Said configuration information acquiring unit; Be arranged in the client; Be used to obtain the configuration information of the spam that client receives and send, the configuration information of said spam comprises in source address/destination address, subject key words, the content keyword at least;
Said Security Policy Server; Be connected with network access equipment; Be used to receive the also configuration information of store configuration information acquiring unit transmission; And, utilize this Spam filtering policy control network access equipment to filter out the spam that mail server receives from network according to this configuration information formulation Spam filtering strategy.
Said Security Policy Server comprises:
The configuration information memory cell is used to receive and the configuration information that sends of store configuration information acquiring unit;
The configuration information processing unit; Be connected with the configuration information memory cell; From the configuration information memory cell, obtain configuration information; Formulate the Spam filtering strategy according to this configuration information, utilize this filtering policy Control Network access device to filter out the spam that mail server receives from network.
Said configuration information memory cell adopts interrupt mode or inquiry mode from the configuration information acquiring unit, to receive the spam configuration information;
Said configuration information processing unit adopts interrupt mode or inquiry mode from the configuration information memory cell, to read the spam configuration information.
Said mail detecting unit is arranged in the said client, perhaps is the independent community in the said system.
A kind of Anti-Spam comprises mail server and passes through at least one client that network access equipment is connected with mail server, also comprises: mail detecting unit, configuration information acquiring unit, Security Policy Server and filtrating mail unit;
Said mail detecting unit is connected with said configuration information acquiring unit, is used for according to the filtering rule that is provided with, and the mail that client is received is checked and mated, identifies the spam in the said Email;
Said configuration information acquiring unit; Be arranged in the client; Be used to obtain the configuration information of the spam that client receives and send, the configuration information of said spam comprises in source address/destination address, subject key words, the content keyword at least;
Said Security Policy Server is connected with network access equipment, is used to receive the also spam configuration information of store configuration information acquiring unit transmission;
Said filtrating mail unit is connected with Security Policy Server, is used for formulating the Spam filtering strategy according to the spam configuration information of Security Policy Server output, utilizes this Spam filtering policy filtering to fall the spam that from network, receives.
Said filtrating mail unit is arranged in the mail server or through communication interface and is connected with mail server.
Said filtrating mail unit is connected between mail server and the Internet Router.
Said mail detecting unit is arranged in the said client, perhaps is the independent community in the said system.
Said Security Policy Server adopts interrupt mode or inquiry mode from the configuration information acquiring unit, to receive the spam configuration information;
Said filtrating mail unit adopts interrupt mode or inquiry mode from Security Policy Server, to obtain the spam configuration information.
Beneficial effect of the present invention is following:
The spam configuration information that junk-mail preventing method of the present invention and system utilize client to upload to server associated is formulated the Spam filtering rule; Utilize this filtering rule that the mail that receives is filtered; Filter out spam wherein; The present invention has realized the interlock of server end and client, and the spam configuration information is directed to vast client, has guaranteed the authentic and valid of configuration information general and enough samples are arranged; Thereby can make server end make rational Spam filtering rule, utilize the propagation of the defence spam that this filtering rule can be more comprehensive and accurate.
Fig. 1 is the structural representation of the e-mail system of local area network (LAN) commonly used in the prior art;
Fig. 2 is the networking sketch map with email distribution and reception system of mail filtering gateway;
Fig. 3 is the networking structure sketch map of the Anti-Spam of the embodiment of the invention one;
Fig. 4 is the flow chart of the junk-mail preventing method of the embodiment of the invention one;
Fig. 5 is the networking structure sketch map of the Anti-Spam of the embodiment of the invention two;
Description of drawings
Fig. 6 is the flow chart of the junk-mail preventing method of the embodiment of the invention two;
Fig. 7 is the networking structure sketch map of the Anti-Spam of the embodiment of the invention three;
Fig. 8 is the flow chart of the junk-mail preventing method of the embodiment of the invention three.
Junk-mail preventing method of the present invention and system utilize the spam configuration information that user end to server uploads to formulate the Spam filtering rule, utilize the defence spam that this filtering rule can be more comprehensive and accurate.
The present invention reports and its server associated end at the configuration information of client with the spam that receives; Formulate the Spam filtering strategy by server end according to the spam configuration information; When server end receives Email from network, can filter out the spam in the Email according to the filtering policy of formulating.
Embodiment one:
Shown in Figure 3 is the networking structure sketch map of the embodiment of the invention one, and by visible among the figure, it mainly comprises:
Mail server is used for receiving Email from network, and the Email that receives is kept in;
Embodiment
Network access equipment; The e-mail forward that is used for client is sent is given Mail Clients; And the e-mail forward that Mail Clients receives is given the client of appointment; This network access equipment can be the broadband access equipment in the wired communication system, also can be the wireless data support node in the wireless communication system;
At least one client is connected with mail server through network access equipment, and this client can be mobile client, also can be fixed clients, and the present invention is provided with mail detecting unit and configuration information acquiring unit at client-side;
Security Policy Server; Be connected with network access equipment; Comprise configuration information memory cell and configuration information processing unit; Be used to receive the also configuration information of store configuration information acquiring unit transmission, and formulate the Spam filtering strategy, utilize this filtering policy Control Network access device to filter out the spam that mail server receives from network according to this configuration information.
The mail detecting unit of client-side can also can be the independent community in the system for being arranged on the functional module in the client, is used for the mail that client receives is detected, and identifies spam wherein; The configuration information acquiring unit is connected with the mail detecting unit through communication interface, is arranged on usually in the client, is used to obtain the configuration information of the spam that the mail detection goes out, and sends to network access equipment.
Configuration information memory cell in the Security Policy Server adopts interrupt mode or inquiry mode to receive the configuration information that the configuration information acquiring unit sends, and it is stored; The configuration information processing unit adopts interrupt mode or inquiry mode from the configuration information memory cell, to read the spam configuration information; Formulate the Spam filtering strategy according to this spam configuration information, and utilize this filtering policy Control Network access device to filter out the spam that mail server receives from network.
Fig. 4 utilizes system shown in Figure 3 to carry out the flow chart of spam prevention, and by visible among the figure, its main implementation procedure is following:
Whether step S10, client are spam through the Email that the mail detection receives, if, this mail is designated spam, continue execution in step S11, otherwise, disregard;
On the mail detecting unit, filtering rule is set; The Email that receives is checked and mated; Can formulate filtering rule according to the items of information such as keyword in source address, mail matter topics, the body matter, for example can fall the filtrating mail that comprises keyword " sales promotion " in the body matter.
Step S11, configuration information acquiring unit obtain the configuration information of the mail with spam sign, and this configuration information is sent to the configuration information memory cell in the Security Policy Server through network access equipment;
The configuration information of said spam comprises in source address/destination address of comprising mail at least, subject key words, the content keyword.
Step S12, configuration information memory cell adopt interrupt mode or inquiry mode to receive the spam configuration information that the configuration information acquiring unit is exported, and the spam configuration information that receives is stored;
Step S13, configuration information processing unit adopt interrupt mode or inquiry mode to read the spam configuration information in the configuration information memory cell, formulate or real-time update Spam filtering strategy according to this spam configuration information;
For example; Because spam is normally mass-sended; So in the configuration information processing unit, can set the sealing grade of spam according to the quantity of the client that reports same source address; The lowest class is the delivery of mail of this address of a shutoff to this client, and highest ranking is the delivery of mail of this address of shutoff to all clients.
Step S14, configuration information processing unit filter out the spam that mail server receives according to said Spam filtering policy control network access equipment from network;
Network access equipment is carried out handled according to the Spam filtering strategy to the source address or the port of spam under the control of configuration information processing unit, filter out the spam that mail server receives from network.
Embodiment two:
Shown in Figure 5 is the networking structure sketch map of Anti-Spam embodiment two of the present invention, and by visible in scheming, it mainly comprises:
Mail server is used for receiving Email from network, and the Email that receives is kept in;
Network access equipment, the e-mail forward that is used for client is sent is given Mail Clients, and gives the client of appointment with the e-mail forward that Mail Clients receives;
At least one client is connected with mail server through network access equipment, and the present invention is provided with mail detecting unit and configuration information acquiring unit at client-side;
Security Policy Server is connected with network access equipment, and its inside has the configuration information memory cell, is used to receive the also configuration information of store configuration information acquiring unit transmission;
The filtrating mail unit; Be connected with Security Policy Server; Be arranged in the mail server or and be connected with mail server through communication interface; Be used for formulating the Spam filtering strategy, utilize this filtering policy to filter out the spam that from network, receives according to the spam configuration information of Security Policy Server output.
The mail detecting unit of client-side can be arranged in the client, also can be the independent community in the system, is used for the mail that client receives is detected, and identifies spam wherein; The configuration information acquiring unit is connected with the mail detecting unit through communication interface, is arranged on usually in the client, is used to obtain the configuration information of the spam that the mail detection goes out, and sends to network access equipment.
Fig. 6 utilizes system shown in Figure 5 to carry out the flow chart of spam prevention, and by visible among the figure, its main implementation procedure is following:
Whether step S20, client are spam through the Email that the mail detection receives, if, this mail is designated spam, continue execution in step S21, otherwise, disregard;
On the mail detecting unit, filtering rule is set, the Email that receives is checked and mate that filtering rule can be formulated according to the items of information such as keyword in source address, mail matter topics, the body matter.
Step S21, configuration information acquiring unit obtain the configuration information of the mail with spam sign, and this configuration information is sent to the configuration information memory cell through network access equipment;
The configuration information of said spam comprises in source address/destination address of comprising mail at least, subject key words, the content keyword.
Step S22, configuration information memory cell adopt interruption or inquiry mode to receive the spam configuration information of configuration information acquiring unit output, and it is stored.
Step S23, filtrating mail unit adopt interruption or inquiry mode to read the spam configuration information in the configuration information memory cell, and formulate or real-time update Spam filtering strategy according to this configuration information;
For example, the filtrating mail unit can add the spam source address that client reports in the blacklist, and perhaps the subject key words with spam increases to filtering rule.
Step S24, filtrating mail unit are discerned the Email that mail server receives from network according to said Spam filtering strategy, and the Spam filtering that identifies is fallen.
Embodiment three:
Shown in Figure 7 is the networking structure sketch map of Anti-Spam embodiment three of the present invention, and by visible in scheming, it mainly comprises:
Mail server is used for receiving Email from network, and the Email that receives is kept in;
Network access equipment, the e-mail forward that is used for client is sent is given Mail Clients, and gives the client of appointment with the e-mail forward that Mail Clients receives;
At least one client is connected with mail server through network access equipment, and the present invention is provided with mail detecting unit and configuration information acquiring unit at client-side;
Security Policy Server is connected with network access equipment, and its inside has the configuration information memory cell, is used to receive the also configuration information of store configuration information acquiring unit transmission;
Mail filtering gateway; The ability that possesses conventional mail filtering gateway; Be connected between mail server and the Internet Router; And be connected with Security Policy Server, be used for formulating the Spam filtering strategy according to the spam configuration information of Security Policy Server output, utilize this filtering policy to filter out the spam that from network, receives.
The mail detecting unit of client-side can be arranged in the client, also can be the independent community in the system, is used for the mail that client receives is detected, and identifies spam wherein; The configuration information acquiring unit is connected with the mail detecting unit through communication interface, is arranged on usually in the client, is used to obtain the configuration information of the spam that the mail detection goes out, and sends to network access equipment.
Fig. 8 utilizes system shown in Figure 7 to carry out the flow chart of spam prevention, and by visible among the figure, its main implementation procedure is following:
Whether step S30, client are spam through the Email that the mail detection receives, if, this mail is designated spam, continue execution in step S31, otherwise, disregard;
On the mail detecting unit, filtering rule is set, the Email that receives is checked and mate that filtering rule is formulated according to the items of information such as keyword in source address, mail matter topics, the body matter.
Step S31, configuration information acquiring unit obtain the configuration information of the mail with spam sign, and this configuration information is sent to the configuration information memory cell through network access equipment;
The configuration information of said spam comprises in source address/destination address of comprising mail at least, subject key words, the content keyword.
Step S32, configuration information memory cell adopt interrupt mode or inquiry mode to receive the spam configuration information of configuration information acquiring unit output, and it is stored.
Step S33, mail filtering gateway adopt interrupt mode or inquiry mode to read the spam configuration information in the configuration information memory cell, formulate or renewal Spam filtering strategy according to this configuration information.
Step S34, mail filtering gateway fall the spam that from network, receives according to said Spam filtering policy filtering.
The mode of other Anti-Spams can any combination in the method and system of Anti-Spam of the present invention and the prior art; Thereby can make whole Anti-Spam system when more accurately receiving normal email, prevent the transmission of spam to a greater extent.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. a junk-mail preventing method is characterized in that, comprises step:
A0, client be according to the filtering rule that self is provided with, and the Email that receives is checked and mated, and from the said Email that receives, identifies spam;
A, client are obtained the configuration information of said spam; And the configuration information of said spam reported and this client server associated end, the configuration information of said spam comprises in source address/destination address, subject key words, the content keyword at least;
B, server end are formulated the Spam filtering strategy according to said configuration information;
When C, server end receive Email from network, fall the spam in the said Email that receives according to said Spam filtering policy filtering.
2. junk-mail preventing method according to claim 1 is characterized in that, said server end adopts interrupt mode or inquiry mode to receive the spam configuration information that client reports.
3. junk-mail preventing method according to claim 1 is characterized in that, the spam configuration information real-time update Spam filtering strategy that said server end reports according to client.
4. an Anti-Spam comprises mail server and passes through at least one client that network access equipment is connected with mail server, it is characterized in that, also comprises: mail detecting unit, configuration information acquiring unit and Security Policy Server;
Said mail detecting unit is connected with said configuration information acquiring unit, is used for according to the filtering rule that is provided with, and the mail that client is received is checked and mated, identifies the spam in the said Email; Said configuration information acquiring unit; Be arranged in the client; Be used to obtain the configuration information of the spam that client receives and send, the configuration information of said spam comprises in source address/destination address, subject key words, the content keyword at least;
Said Security Policy Server; Be connected with network access equipment; Be used to receive the also configuration information of store configuration information acquiring unit transmission; And, utilize this Spam filtering policy control network access equipment to filter out the spam that mail server receives from network according to this configuration information formulation Spam filtering strategy.
5. Anti-Spam according to claim 4 is characterized in that, said Security Policy Server comprises:
The configuration information memory cell is used to receive and the configuration information that sends of store configuration information acquiring unit;
The configuration information processing unit; Be connected with the configuration information memory cell; From the configuration information memory cell, obtain configuration information; Formulate the Spam filtering strategy according to this configuration information, utilize this filtering policy Control Network access device to filter out the spam that mail server receives from network.
6. Anti-Spam according to claim 5 is characterized in that,
Said configuration information memory cell adopts interrupt mode or inquiry mode from the configuration information acquiring unit, to receive the spam configuration information;
Said configuration information processing unit adopts interrupt mode or inquiry mode from the configuration information memory cell, to read the spam configuration information.
7. Anti-Spam according to claim 4 is characterized in that, said mail detecting unit is arranged in the said client, perhaps is the independent community in the said system.
8. Anti-Spam; Comprise mail server and at least one client that is connected with mail server through network access equipment; It is characterized in that, also comprise: mail detecting unit, configuration information acquiring unit, Security Policy Server and filtrating mail unit;
Said mail detecting unit is connected with said configuration information acquiring unit, is used for according to the filtering rule that is provided with, and the mail that client is received is checked and mated, identifies the spam in the said Email;
Said configuration information acquiring unit; Be arranged in the client; Be used to obtain the configuration information of the spam that client receives and send, the configuration information of said spam comprises in source address/destination address, subject key words, the content keyword at least;
Said Security Policy Server is connected with network access equipment, is used to receive the also spam configuration information of store configuration information acquiring unit transmission;
Said filtrating mail unit is connected with Security Policy Server, is used for formulating the Spam filtering strategy according to the spam configuration information of Security Policy Server output, utilizes this Spam filtering policy filtering to fall the spam that from network, receives.
9. Anti-Spam according to claim 8 is characterized in that, said filtrating mail unit is arranged in the mail server or through communication interface and is connected with mail server.
10. Anti-Spam according to claim 8 is characterized in that, said filtrating mail unit is connected between mail server and the Internet Router.
11. Anti-Spam according to claim 8 is characterized in that, said mail detecting unit is arranged in the said client, perhaps is the independent community in the said system.
12. Anti-Spam according to claim 8 is characterized in that,
Said Security Policy Server adopts interrupt mode or inquiry mode from the configuration information acquiring unit, to receive the spam configuration information;
Said filtrating mail unit adopts interrupt mode or inquiry mode from Security Policy Server, to obtain the spam configuration information.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101092092A CN1852268B (en) | 2005-10-19 | 2005-10-19 | Junk-mail preventing method and system |
| CN2006800122727A CN101160876B (en) | 2005-10-15 | 2006-10-08 | Network security control method and system |
| EP06791210A EP1936892A4 (en) | 2005-10-15 | 2006-10-08 | A system for controlling the security of network and a method thereof |
| PCT/CN2006/002628 WO2007045150A1 (en) | 2005-10-15 | 2006-10-08 | A system for controlling the security of network and a method thereof |
| US11/549,186 US20070089165A1 (en) | 2005-10-15 | 2006-10-13 | Method and System for Network Security Control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101092092A CN1852268B (en) | 2005-10-19 | 2005-10-19 | Junk-mail preventing method and system |
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| Publication Number | Publication Date |
|---|---|
| CN1852268A CN1852268A (en) | 2006-10-25 |
| CN1852268B true CN1852268B (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005101092092A Active CN1852268B (en) | 2005-10-15 | 2005-10-19 | Junk-mail preventing method and system |
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| CN (1) | CN1852268B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101222447B (en) * | 2008-01-23 | 2010-11-24 | 成都市华为赛门铁克科技有限公司 | System and method for implementing mail filtering |
| CN104462509A (en) * | 2014-12-22 | 2015-03-25 | 北京奇虎科技有限公司 | Review spam detection method and device |
| CN105912674A (en) * | 2016-04-13 | 2016-08-31 | 精硕世纪科技（北京）有限公司 | Method, device and system for noise reduction and classification of data |
| CN106227808B (en) * | 2016-07-22 | 2019-04-05 | 厦门容能科技有限公司 | A kind of method and method for judging rubbish mail removing mail interference information |
| CN108039998B (en) * | 2017-11-15 | 2021-05-28 | 维沃移动通信有限公司 | Mail processing method, receiving side terminal, sending side terminal and mail system |
| JP6758536B2 (en) * | 2018-05-22 | 2020-09-23 | 三菱電機株式会社 | Fraudulent email judgment device, fraudulent email judgment method and fraudulent email judgment program |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355499A (en) * | 2000-11-30 | 2002-06-26 | 英业达股份有限公司 | Method for processing e-mail |
| WO2004079514A2 (en) * | 2003-03-03 | 2004-09-16 | Microsoft Corporation | Feedback loop for spam prevention |
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- 2005-10-19 CN CN2005101092092A patent/CN1852268B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355499A (en) * | 2000-11-30 | 2002-06-26 | 英业达股份有限公司 | Method for processing e-mail |
| WO2004079514A2 (en) * | 2003-03-03 | 2004-09-16 | Microsoft Corporation | Feedback loop for spam prevention |
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