CN1272947C - Method of carrying out preventing of refuse postal matter - Google Patents
Method of carrying out preventing of refuse postal matter Download PDFInfo
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- CN1272947C CN1272947C CN 200410008824 CN200410008824A CN1272947C CN 1272947 C CN1272947 C CN 1272947C CN 200410008824 CN200410008824 CN 200410008824 CN 200410008824 A CN200410008824 A CN 200410008824A CN 1272947 C CN1272947 C CN 1272947C
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Abstract
The present invention provides an implementation method for preventing junk mails, which comprises the following steps: an analysis unit which can query an IP address list of a server which allows sending a corresponding mail according to domain name information in the address postfix of a sender; in the process of receiving the main, according to the domain name information in the address postfix of the sender, the analysis unit analyzes the IP address list of the server which allows sending the corresponding mail; a mail receiving server judges whether the source IP address of a mail data packet sent from the sender belongs to the analyzed IP address list or not to determine that the mail data packet is received or discarded. The present invention can make the prevention result of the prior art for preventing junk mails accurate and can reduce excessive junk mails.
Description
Technical field
The present invention relates to field of Internet communication, relate in particular to a kind of implementation method of Anti-Spam.
Background technology
The applicant is in the patent of invention " method of Anti-Spam " of first to file, and application number is 200310116951.7, has put down in writing the technical scheme of following realization Anti-Spam:
(1) receipt mail server parsed the sender mail server IP address of this mail data bag of transmission and sender's addresses of items of mail of this mail data bag respectively before formal reception mail data bag;
(2), go out resolution data under this domain name by corresponding field name analysis server parses according to the domain name in described sender's addresses of items of mail;
(3) receipt mail server draws the sender mail server IP address list that allows reception according to described resolution data;
(4) whether the sender mail server IP address described in the receipt mail server determining step (1) is at the row of the sender mail server IP address list described in the step (3), if receipt mail server receives this mail data bag; If not, then receipt mail server is rejected this mail data bag.
But in the above-mentioned implementation of having applied for, it is mainly at following hypothesis and prerequisite and propose:
A) receipt mail server in the sender mail server in territory, sender place and territory, sender place is same server, and promptly the IP address of the IP address of sender mail server and receipt mail server is identical.Corresponding domain name resolution server in the above-mentioned steps (2) is according to the domain name in the sender address like this, search corresponding mail exchange record (MX, Mail Exchanger), obtain the machine name of receipt mail server, again further according to the machine name of the receipt mail server that obtains, inquiry A (Address) writes down and then obtains the IP address information of receipt mail server, but the IP address of sender mail server and receipt mail server is identical here, so it is exactly the IP address of sender mail server that the IP address of the receipt mail server that obtains here promptly can be thought, judge whether the mail of reception is legal, reaches the purpose that prevents spam thereby the IP address of the sender mail server that receipt mail server just can find according to the IP address of actual sender mail server and domain name resolution server in the step (4) is whether consistent.
B) simultaneously for the IP address of the IP address that prevents sender mail server and receipt mail server when inequality, the situation of the mail that the legal sender mail server of meeting rejection sends takes place, also the IP address adjacent with the IP address range of receipt mail server all can be arranged to send mail to this receipt mail server, its size that scope is set is determined by administrative staff.Corresponding domain name resolution server in the above-mentioned steps (2) is according to the domain name in the sender address like this, search corresponding mail exchange record (MX, Mail Exchanger), obtain the machine name of receipt mail server, again further according to the machine name of the receipt mail server that obtains, inquiry A (Address) writes down and then obtains the IP address information of receipt mail server, because be provided with the IP address of sender mail server here is the IP address list adjacent with the IP address range of receipt mail server, so can obtain the IP address list of corresponding sender mail server here, thereby the row of the IP address list of the sender mail server whether the IP address that receipt mail server just can be judged actual sender mail server in the step (4) finds at domain name resolution server, whether the mail of judging reception is legal, reaches the purpose that prevents spam.
So according to above-mentioned reason, when the IP address of the IP address of sender mail server and receipt mail server is inequality, setting according to administrative staff, will be with the IP address range of receipt mail server adjacent IP address list all be arranged to the IP address of legal sender mail server, just might be because the problem that scope is provided with, and the IP address of the sender mail server that some are illegal also is provided with into, will cause having the illegal spam of part to send into like this, simultaneously, when the wide apart of the IP address of the receipt mail server in the IP address of the sender mail server in territory, sender place and territory, sender place, the non-spam that also may the legal sender mail server of false rejection be sent, thus make the strick precaution of spam can not reach point-device result.
Summary of the invention
The technical problem to be solved in the present invention is the implementation method that proposes a kind of Anti-Spam, so that the strick precaution result of existing Anti-Spam technology is more accurate, reduces spreading unchecked of spam.
For addressing the above problem, the present invention proposes a kind of implementation method of Anti-Spam, comprise the steps:
Setting can be according to the resolution unit of the permission sender mail server IP address list of the dns query message correspondence in the sender address suffix;
In the mail reception process, described resolution unit parses the IP address list of corresponding permission sender mail server according to the domain-name information in the sender address suffix; And
The row of the IP address list that whether is obtained in parsing by the source IP address of receipt mail server by judging the mail data bag that described sender sends decide to receive/abandon this mail data bag.
Further be provided with in the described resolution unit:
Be used to store the permission sender mail server list records of corresponding relation between the domain-name information that allows sender mail server and the machine name;
Be used to store the address record or the canonical name of corresponding relation between the machine name that allows sender mail server and the IP address list.
The processing procedure that wherein said resolution unit is resolved corresponding permission sender mail server IP address list according to the domain-name information in the sender address suffix comprises:
Permission sender mail server list records in the described resolution unit navigates to the machine name of corresponding permission sender mail server according to the domain-name information in the sender address suffix;
Address record in the described resolution unit or canonical name are according to the machine name of the permission sender mail server that navigates to, the IP address list of the permission sender mail server of index correspondence.
Described resolution unit can be arranged in the domain name resolution server in the territory, domain-name information place in the sender address suffix, perhaps be provided with separately.
Wherein said method also comprises the mail process of transmitting: sender mail server will comprise that the mail data bag of sender address information, address of the addressee information and self IP address information sends to receipt mail server;
Described mail reception process also comprises: receipt mail server is according to the domain-name information in the sender address suffix that comprises in the mail data bag, and the corresponding resolution unit of request is resolved the IP address list of this domain-name information correspondence.
Wherein said mail process of transmitting further comprises:
Sender mail server is according to the domain-name information in the address of the addressee suffix that comprises in the mail data bag, and the corresponding domain name resolution server of request is resolved the IP address information of this domain name correspondence;
This corresponding domain name resolution server by the inquiry mail exchange record, navigates to the machine name of receipt mail server according to the domain-name information in the address of the addressee suffix;
This corresponding domain name resolution server obtains the IP address information of receipt mail server according to the machine name inquire address record of this receipt mail server that obtains;
This domain name resolution server responds the IP address information of the receipt mail server that inquires to sender mail server;
Sender mail server sends to receipt mail server according to the IP address information of receipt mail server with described mail data bag.
Wherein said mail reception process also comprises:
The IP address list that corresponding resolution unit obtains parsing is responded to receipt mail server;
Receipt mail server is judged the row of the IP address list that the IP address obtain sender mail server obtains in parsing, receipt mail server receives this mail data bag, and according to the address of the addressee information that comprises in this mail data bag the mail data bag is sent to corresponding addressee; Otherwise receipt mail server abandons this mail data bag.
Described resolution unit and domain name resolution server can be supported the expression way of asterisk wildcard.
Described resolution unit and domain name resolution server can be supported the expression way of subnet or IP address range section.
The implementation method of Anti-Spam of the present invention stores the resolution unit that allows the sender mail server list records by setting, can make the real purpose that realizes according to its legitimate ip address of dns query message of the sender mail server that comprises in the sender address information of receipt mail server, thereby make the sender mail server of holding illegal IP address can not pretend domain-name information up to specification again and send spam, therefore improve the accuracy of anti-spam, controlled spreading unchecked of present spam effectively.
Description of drawings
Fig. 1 is the process chart of the implementation method of Anti-Spam of the present invention.
Embodiment
The implementation method of Anti-Spam of the present invention is in design process, by nearly 100,000 envelope spams of the heavy calamity user of numerous spams (wherein the heavy calamity user of spam is meant that the quantity that receives spam accounts for more than 99% of reception mail sum) are analyzed and added up, draw as drawing a conclusion:
The domain name in the sender address suffix of the spam 95% or more that the heavy calamity user of spam receives and the domain name of actual sender mail server are inconsistent, and the real ip address that promptly sends the sender mail server of this mail is not corresponding with domain name in this mail sender address information.
According to above-mentioned conclusion, thus the normal email (being non-spam) that can draw the overwhelming majority by in sender's addresses of items of mail the sender mail server claiming under the domain name to be allowed send out; Further, also might be (because also can directly send mail) that other application servers such as www server, ftp server send out to receipt mail server as some other application servers such as www server, ftp servers.
The implementation method of Anti-Spam of the present invention just is being based on above-mentioned conclusion, proposes only to allow legal sender mail server to send mail, thereby can prevent the transmission of spam with defensive measure the most accurately; Certainly, the implementation method of Anti-Spam of the present invention and the mode of other Anti-Spams of the prior art, as combinations arbitrarily such as real-time blacklist technology and real-time white list technology, thereby realize making the system of whole Anti-Spam when receiving normal email more accurately, prevent the transmission of spam greatly.
For the domain-name information in the sender address suffix that comprises in the mail data bag that can send according to sender mail server finds corresponding permission to send the IP address information of the legal sender mail server of mail, the implementation method of Anti-Spam of the present invention is provided with a resolution unit, store in this resolution unit and allow the sender mail server list records (to be defined as MS here, Mail Sender), wherein MS is a list records, stores the domain-name information of permission sender mail server and the corresponding relation between the machine name in its record; The address record that MS record and having now is provided with in the domain name resolution server (DNS, Domain NameSystem) (A Address), mail exchange record (MX, Mail Exchanger) waits side by side, has in disposing as the domain name mapping in mydomain.com territory:
MX receiver; Publicity machine receiver can receive the mail of sending in the mydomain territory
MS sender; Publicity machine sender can send the mail in the mydomain territory
MS 192.168.0.1; Publicity IP address is that the machine of 192.168.0.1 can send the mail in the mydomain territory
(A Address) or canonical name (CNAME), wherein stores the machine name that allows sender mail server and the corresponding relation between the IP address list in A record or the CNAME record also to store address record simultaneously in this resolution unit.
Resolution unit after being provided with like this just can be according to the domain-name information in the sender address suffix, by inquiry MS record, A record/CNAME record, obtain to should domain-name information each allow the IP address of sender mail server.
Wherein the resolution unit of above-mentioned setting can be selected to be arranged in the domain name resolution server in territory, sender mail server place as the case may be, perhaps separates in independent service routine or the server to be provided with; Perhaps be provided with separately.When in the domain name resolution server of described resolution unit being selected be arranged on territory, sender mail server place, wherein MS record can be provided with separately, corresponding A record/CNAME record then can be respectively with the domain name resolution server in territory, sender mail server place in A record/CNAME record lump together setting.
The implementation method that describes Anti-Spam of the present invention below in detail is carried out the processing procedure of Anti-Spam by the resolution unit of above-mentioned setting, and with reference to Fig. 1, this figure is the process chart of the implementation method of Anti-Spam of the present invention.The processing procedure of its Anti-Spam mainly comprises:
Step 1, when the sender will send an envelope mail to the addressee, sender address information, address of the addressee information and information such as mail matter topics and Mail Contents can be packaged into a mail data bag, then this mail data bag be sent in the sender mail server 10 that self belongs to;
Sender mail server 10 can be with the domain-name information in the address of the addressee suffix that comprises in this mail data bag that receives (when being abc@yourdomain.com as address of the addressee, its suffix domain-name information is yourdomain.com) send the domain name resolution server DNS 20 at this place, territory, ask the domain name resolution server DNS 20 of this domain name ownership to resolve the IP address information (being the IP address information of receipt mail server) of these domain name correspondences;
The domain name resolution server 20 in territory, recipient place by inquiry mail exchange record MX, navigates to the machine name of receipt mail server 40 according to the domain-name information yourdomain.com in the address of the addressee suffix;
The domain name resolution server 20 in territory, recipient place obtains the IP address information of receipt mail server 40 again according to the machine name inquire address record A of this receipt mail server 40 that obtains.
Step 2, the domain name resolution server 20 in territory, recipient place responds the IP address information of the receipt mail server 40 that inquires in the step 1 to sender mail server 10.
Step 3, sender mail server 10 is according to the IP address information of the receipt mail server 40 that receives, described mail data bag is sent to receipt mail server 40, according to Data communication principle, wherein sender mail server 10 sends to the IP address information that has been packaged with sender mail server 10 in the mail data bag in the receipt mail server 40.
Step 4, after receipt mail server 40 receives this mail data bag, according to the domain-name information in the sender address suffix that comprises in this mail data bag (when being 123@mydomain.com as sender address, its suffix domain-name information is mydomain.com), ask the resolution unit 30 (wherein this resolution unit 30 can be provided with separately, also can be arranged in the domain name resolution server 50 in territory, place, outbox side) at this domain-name information place to resolve the IP address list of this domain-name information mydomain.com correspondence;
This resolution unit 30 allows sender mail server list records MS and corresponding address record A/ canonical name CNAME by inquiry respectively according to this domain-name information mydomain.com, and is as follows as operation result:
MS sender1
MS sender2
Sender1 IN A 192.0.0.1-192.0.0.1 is domain name mydomain.com
The legitimate ip address of sender mail server
Sender2 IN A 192.0.0.2-192.0.0.2 is domain name mydomain.com
The legitimate ip address of sender mail server
Like this, this resolution unit 30 can draw the legitimate ip address tabulation to the permission sender mail server under should domain name mydomain.com, only allow to receive the mail that the legitimate mail server sends in advance as the webmaster personnel, the IP address list of the permission sender mail server that then draws comprises 192.0.0.1 and 192.0.0.2, i.e. the defined recorded information of MS;
Allow to receive the mail that all the legal sender mail servers under this domain name mydomain.com send in advance as the webmaster personnel, the 192.0.0.1 and 192.0.0.2 that in the MS recorded information, comprises in the IP address list that then parses, the IP address that can also comprise various application servers is as IP address 192.0.0.6 of www server etc.;
The IP address list of this resolution unit 30 sender mail server 10 that parsing is obtained is responded to receipt mail server 40 then.
Step 5, receipt mail server 40 is resolved the source IP address information that encapsulates in this mail data bag that receives, promptly resolve the IP address information of sender mail server 10, judge the row of the IP address list of the permission sender mail server 10 whether the IP address of sender mail server 10 obtains then in step 4, if the IP address as sender mail server 10 is 192.0.0.1, so row (192.0.0.1 and 192.0.0.2) at the permission sender mail server IP address list that obtains, therefore receipt mail server 40 directly receives this mail data bag, goes to step 6 then;
If the IP address of the sender mail server 10 of this mail data bag is not at the row (the IP address as sender mail server 10 is 192.168.0.1) of the permission sender mail server IP address list that obtains, then receipt mail server 40 thinks that this mail data bag is to be sended over by irresponsible mail server, application server or other servers that can not trace, think spam, give discard processing this mail data bag.
Step 6, receipt mail server 40 sends to this mail reception people according to the address of the addressee information in this mail data bag with this mail data bag.
Thereby in above-mentioned mail transmission/reception process, since receipt mail server 40 sides will be by 30 pairs of sender mail servers 10 of resolution unit of being provided with IP address and the processing of comparing of the consistency between the domain-name information that this sender mail server 10 is claimed, send some spams so can prevent the illegal server of some camouflage legitimate domain name information, thereby alleviated spreading unchecked of spam, improved the accuracy of anti-spam.
Because (the fictitious host computer technology is meant and uses special software and hardware technology in the proposition of fictitious host computer technology, the main frame that a computer is divided into Yi Taitai " virtual ", each fictitious host computer all has independently domain name and IP address, complete Internet server capability is also arranged, on same hardware, same operating system, moving is the different server program that a plurality of users open, and does not disturb mutually; And each user has a part of system resource of oneself, as IP address, file storage, internal memory and CPU time etc.), so in the resolution unit and existing domain name resolution server of above-mentioned setting, support can be set use the expression way of asterisk wildcard to unify expression, the support to IP address range section or subnet expression way also can be set the machine name of each server with identical characters beginning; Like this in the resolution unit that is provided with or in existing domain name resolution server, not only be provided with the MS entry, can also support to the expression way of asterisk wildcard with to the expression way of subnet IP address range section, as being explained as follows of each statement in resolution unit or domain name resolution server:
MS 192.168.0.0/24；
---the server in this C class subnet of expression 192.168.0.0 can send mail;
MS 192.168.0.1-192.168.0.12；
---expression has the server of these 12 IP addresses can send out mail;
a
*.mydomain.com IN A 192.168.0.4；
---the expression machine name is that the IP address of the machine of a beginning all is 192.168.0.4;
b
*.mydomain.com IN A 192.168.0.5；
---the expression machine name is that the IP address of the machine of b beginning all is 192.168.0.5;
MS a
*.mydomain.com；
---expression mydomain.com territory inner machine name is that all machines of a beginning can be sent out
Mail
MS [a-b]
*.mydomain.com；
---expression .mydomain.com territory inner machine name is that a can to all machines of b beginning
To send out mail.
The resolution unit or the domain name resolution server of the expression way of the above-mentioned expression way that can support asterisk wildcard simultaneously and IP address range section or subnet not only can be applicable to present RFC1033, RFC1034 and the defined international standard domain name mapping of RFC1035 system, can also be applicable to comprise that the Chinese domain name that CNNIC, website service such as 3721 provide resolves system, in like manner also can be adapted to the domain name mapping system of other countries' language definition.
The applicant is in the application number of first to file is 200310116951.7 patent of invention " method of Anti-Spam ", propose a kind of can be under the situation of the technology that implementation method proposed of not using Anti-Spam of the present invention, only change the resolution data in outbox territory, all list all servers that allow to send mail in the A record, also can reach the purpose that prevents spam accurately substantially, if in the method for the former Anti-Spam of having applied for, be used in combination the implementation method of Anti-Spam of the present invention, can reach the purpose that prevents spam more accurately.
Certainly, the above only is a preferred implementation of the present invention, should be understood that; for those skilled in the art; under the prerequisite that does not break away from the technology of the present invention principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1, a kind of implementation method of Anti-Spam is characterized in that, comprises the steps:
Setting can be according to the resolution unit of the permission sender mail server IP address list of the dns query message correspondence in the sender address suffix;
In the mail reception process, described resolution unit parses the IP address list of corresponding permission sender mail server according to the domain-name information in the sender address suffix;
Receipt mail server is according to the domain-name information in the sender address suffix that comprises in the mail data bag, and the corresponding resolution unit of request is resolved the IP address list of this domain-name information correspondence; And
The row of the IP address list that whether is obtained in parsing by the source IP address of receipt mail server by judging the mail data bag that described sender sends decide to receive/abandon this mail data bag;
In the mail process of transmitting, sender mail server will comprise that the mail data bag of sender address information, address of the addressee information and self IP address information sends to receipt mail server.
2, the implementation method of Anti-Spam as claimed in claim 1 is characterized in that, further is provided with in the described resolution unit:
Be used to store the permission sender mail server list records of corresponding relation between the domain-name information that allows sender mail server and the machine name;
Be used to store the address record or the canonical name of corresponding relation between the machine name that allows sender mail server and the IP address list.
3, the implementation method of Anti-Spam according to claim 2 is characterized in that, the processing procedure that described resolution unit is resolved corresponding permission sender mail server IP address list according to the domain-name information in the sender address suffix comprises:
Permission sender mail server list records in the described resolution unit navigates to the machine name of corresponding permission sender mail server according to the domain-name information in the sender address suffix;
Address record in the described resolution unit or canonical name are according to the machine name of the permission sender mail server that navigates to, the IP address list of the permission sender mail server of index correspondence.
4, the implementation method of Anti-Spam as claimed in claim 1 is characterized in that, described resolution unit is arranged in the domain name resolution server in the territory, domain-name information place in the sender address suffix, perhaps is provided with separately.
5, the implementation method of Anti-Spam as claimed in claim 1 is characterized in that, described mail process of transmitting further comprises:
Sender mail server is according to the domain-name information in the address of the addressee suffix that comprises in the mail data bag, and the corresponding domain name resolution server of request is resolved the IP address information of this domain name correspondence;
This corresponding domain name resolution server by the inquiry mail exchange record, navigates to the machine name of receipt mail server according to the domain-name information in the address of the addressee suffix;
This corresponding domain name resolution server obtains the IP address information of receipt mail server according to the machine name inquire address record of this receipt mail server that obtains;
This domain name resolution server responds the IP address information of the receipt mail server that inquires to sender mail server;
Sender mail server sends to receipt mail server according to the IP address information of receipt mail server with described mail data bag.
6, the implementation method of Anti-Spam as claimed in claim 1 is characterized in that, described mail reception process also comprises:
The IP address list that corresponding resolution unit obtains parsing is responded to receipt mail server;
Receipt mail server is judged the row of the IP address list that the IP address obtain sender mail server obtains in parsing, receipt mail server receives this mail data bag, and according to the address of the addressee information that comprises in this mail data bag the mail data bag is sent to corresponding addressee; Otherwise receipt mail server abandons this mail data bag.
As the implementation method of claim 4 or 5 described Anti-Spams, it is characterized in that 7, described resolution unit and domain name resolution server can be supported the expression way of asterisk wildcard.
As the implementation method of claim 4 or 5 described Anti-Spams, it is characterized in that 8, described resolution unit and domain name resolution server can be supported the expression way of subnet or IP address range section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410008824 CN1272947C (en) | 2004-03-16 | 2004-03-16 | Method of carrying out preventing of refuse postal matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410008824 CN1272947C (en) | 2004-03-16 | 2004-03-16 | Method of carrying out preventing of refuse postal matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1564551A CN1564551A (en) | 2005-01-12 |
| CN1272947C true CN1272947C (en) | 2006-08-30 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410008824 Expired - Fee Related CN1272947C (en) | 2004-03-16 | 2004-03-16 | Method of carrying out preventing of refuse postal matter |
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| Country | Link |
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| CN (1) | CN1272947C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188580B (en) * | 2007-12-05 | 2010-12-15 | 中国联合网络通信集团有限公司 | A real time spam filtering method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100349421C (en) * | 2005-06-21 | 2007-11-14 | 广东省电信有限公司研究院 | Detecting and positioning method of spam server |
| CN101014026B (en) * | 2006-12-18 | 2010-05-19 | 联创科技(南京)有限公司 | Method for implementing general soft gateway of dynamic self-adaptive Radius system |
| CA2739774A1 (en) | 2008-10-15 | 2010-04-22 | Nokia Corporation | Methods, apparatuses, and computer program products for determining a network interface to access a network resource |
| CN101494546B (en) * | 2009-01-05 | 2011-04-20 | 东南大学 | Method for preventing collaboration type junk mail |
| KR101445116B1 (en) * | 2010-09-28 | 2014-10-16 | 엠파이어 테크놀로지 디벨롭먼트 엘엘씨 | Data filtering for communication devices |
| US20120131107A1 (en) * | 2010-11-18 | 2012-05-24 | Microsoft Corporation | Email Filtering Using Relationship and Reputation Data |
| CN102209075A (en) * | 2011-06-02 | 2011-10-05 | 国家计算机病毒应急处理中心 | Behavior-based malicious email transmission node detection method |
| CN102413070B (en) * | 2011-11-24 | 2014-09-03 | 匡晓明 | Junk mail preventing method for setting rules by addressor |
| CN102571770B (en) * | 2011-12-27 | 2015-02-04 | 北京神州绿盟信息安全科技股份有限公司 | Man-in-the-middle attack detection method, device, server and system |
| CN103580985A (en) * | 2012-07-27 | 2014-02-12 | 阿里巴巴集团控股有限公司 | Method and device for sending emails |
| CN105847123A (en) * | 2016-04-19 | 2016-08-10 | 乐视控股（北京）有限公司 | Spam mail recognition method and device |
| CN109495372B (en) * | 2017-09-11 | 2021-12-07 | 北京二六三企业通信有限公司 | Junk mail identification method and device |
| CN107968740B (en) * | 2017-10-17 | 2021-01-05 | 广东睿江云计算股份有限公司 | Method and device for filtering junk mails |
| CN108011988A (en) * | 2017-11-27 | 2018-05-08 | 广东睿江云计算股份有限公司 | It is a kind of to substitute method, the system for sending mailing system cluster |
| CN111131007A (en) * | 2020-01-10 | 2020-05-08 | 山东超越数控电子股份有限公司 | BMC mail sending method based on SMTP |
| CN114679426B (en) * | 2022-05-27 | 2022-09-02 | 太平金融科技服务(上海)有限公司深圳分公司 | Mail interception method, device, equipment and storage medium |
-
2004
- 2004-03-16 CN CN 200410008824 patent/CN1272947C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188580B (en) * | 2007-12-05 | 2010-12-15 | 中国联合网络通信集团有限公司 | A real time spam filtering method and system |
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| Publication number | Publication date |
|---|---|
| CN1564551A (en) | 2005-01-12 |
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