CN1564549A - System of preventing refuse postal matter - Google Patents
System of preventing refuse postal matter Download PDFInfo
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- CN1564549A CN1564549A CNA2004100316922A CN200410031692A CN1564549A CN 1564549 A CN1564549 A CN 1564549A CN A2004100316922 A CNA2004100316922 A CN A2004100316922A CN 200410031692 A CN200410031692 A CN 200410031692A CN 1564549 A CN1564549 A CN 1564549A
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Abstract
The system includes buffer for received mail data packets. Packet head information being added to received mail data packets buffered, mail data packets are transferred to anti garbage mail server. The server analyzes mail data packets having packet head information being added, and determines whether the mail is legal or not.
Description
Technical field
The present invention relates to field of Internet communication, relate in particular to a kind of Anti-Spam.
Background technology
Along with developing rapidly of Internet technology, the mode that the utilization Email communicates interchange more and more widely obtained application.Meanwhile, also spread unchecked as spam based on contents such as pornographic, reaction, boring, advertisements thereupon.Therefore, just need on existing email distribution and reception system, increase of the fail safe of Anti-Spam function with certified mail system transmitting-receiving legitimate mail.
At present, realize that on existing email distribution and reception system the mode of Anti-Spam function mainly comprises following three kinds of modes:
(1) scheme of utilizing software to transform: the Anti-Spam software that is about to write is installed in the mail server and goes.There is following inferior position in this scheme:
Will be at the different different Anti-Spam software of mail action system establishment, so just increased the live load of mail server in the former email distribution and reception system, when causing user for original quantity that service is provided, may need to increase mail server, the cost of will increasing input like this; Be not easy to manage during the array that also can cause simultaneously forming by the multiple pc machine when mail server.
(2) purchase the scheme of Anti-Spam server again: this scheme is exactly to purchase the mail server of band Anti-Spam function in email distribution and reception system.There is following inferior position in this scheme:
Be not suitable for the transformation of existing mailing system, when needs reconfigured the mail server of many band Anti-Spam functions, the cost input may be too high and be not easy to management.
(3) scheme of configuration Anti-Spam gateway: the Anti-Spam software of writing promptly is installed in the computer of a platform independent, all mails at first are equipped with the computer of Anti-Spam software through this, after the Anti-Spam processing, the legitimate mail that will allow again to receive is transmitted to receipt mail server, and computer this platform independent, that Anti-Spam software is installed is exactly the Anti-Spam gateway.
But this scheme implements difficulty on performance and cost bigger; Because it is by Simple Mail Transfer protocol (SMTP that receipt mail server is responsible for receiving the work of mail, Simple Mail TransferProtocol) mail reception is got off, be put into then in addressee's the mailbox, wherein addressee's mailbox also can be arranged on (the double mailbox server of doing of receipt mail server at this moment) on the receipt mail server, also can realize by mailbox server is set separately.And the Anti-Spam gateway need be responsible for receiving all mails by smtp protocol, again each mail is carried out Anti-Spam and handles, and the legitimate mail that will allow again to receive is transmitted to receipt mail server.Thereby as can be seen, even Anti-Spam gateway and receipt mail server use the configuration of same hardware, also can cause the whole speed that receives mail of mailing system to reduce, promptly added after the Anti-Spam gateway, receipt mail server does not receive the speed of mail when the performance that receives mail speed still reaches mailing system the Anti-Spam gateway is not set.If keep the performance of receipt mail server fully, need many Anti-Spam gateways of configuration, or the higher Anti-Spam gateway of configuration performance is protected a receipt mail server.Like this from the economy angle, bigger in order to set up the cost that mailing system with Anti-Spam function need drop into, especially when forming the mail server array by many receipt mail servers, the cost input is bigger to be very not have economy.Wherein the Anti-Spam gateway generally comprises transparent gateway, opaque gateway and three kinds of forms of forwarding server.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of Anti-Spam, and less input and the Anti-Spam of Anti-Spam better performances to set up a kind of cost.
For addressing the above problem, the present invention proposes a kind of Anti-Spam, comprising:
Buffer that can the receiving and dispatching mail packet, described buffer are used for the mail data bag that receives is carried out buffered, and transmit after the mail data bag that receives added header packet information; With
The Anti-Spam server that is connected with described buffer, described Anti-Spam server is used for reception buffer and transmits the mail data bag of coming, and, judge whether the mail data bag is legal by analyzing the mail data bag that has added header packet information through described buffer.
Wherein said system also comprises the mailbox server that is connected with described Anti-Spam server, and described mailbox server is used to deposit thinks legal mail data bag after Anti-Spam server analysis and judgement.
Wherein said buffer and Anti-Spam server place same LAN system.
Wherein said Anti-Spam server is mail server or the mail server for having the Anti-Spam function that Anti-Spam software is installed.
Wherein buffer is the mail server of transformation, further comprises in the mail server of described buffer or transformation:
Transmit-Receive Unit is used to receive mail data bag that other mail servers send and sends the mail data bag to other mail servers;
The header packet information adding device is connected with described Transmit-Receive Unit, is used to dock the receiving emails packet and adds header packet information; With
Retransmission unit is connected with described header packet information adding device, is used for the mail data bag that has added header packet information is transmitted.
Wherein the header packet information adding device further comprises IP address interpolation subelement, is used for adding in the position, packet header that receives the mail data bag IP address information of the mail server that sends this mail data bag.
Also further comprise in the described buffer:
Authentication information Forward Proxy unit is used to obtain the user authentication information that sends the mail data bag, and the authentication information that obtains is transmitted to described Anti-Spam server.
Accordingly, further comprise the authentication processing unit in the described Anti-Spam server, be used for the authentication information that described authentication information Forward Proxy unit forwards is come is carried out authentication processing, and judge whether the validated user that sends the mail data bag pretends to be others to send mail.
Wherein the authentication processing unit further comprises:
The first authentication processing subelement is used for the authentication information that described authentication information Forward Proxy unit forwards is come is carried out authentication processing, judges whether the user who sends the mail data bag is legal authenticated user;
The second authentication processing subelement, be connected with the described first authentication processing subelement, be used for user who sends this mail data bag by the legal authenticated user after the first authentication processing subelement authentication processing and the authentication processing whether sender address conforms to are judged whether the validated user that sends the mail data bag pretends to be others to send mail.
Anti-Spam of the present invention adds buffer in Anti-Spam server front, use buffer to receive the mail data bag that sends from other mail servers, and then the mail data bag that receives is transmitted to connected Anti-Spam server, by this Anti-Spam server this mail data bag is carried out legitimate verification, thereby stop the transmission of spam.Finish thereby make in task sharing to the two different equipment of the task of receiving the mail data bag and Anti-Spam, alleviated the live load of Anti-Spam server in the prior art, the performance of Anti-Spam is improved; Simultaneously since the buffer of Anti-Spam server former configuration can serve as by the normal mail server, and each buffer can with the co-ordination of a plurality of Anti-Spam server, so reduced the networking cost of Anti-Spam.
Description of drawings
Fig. 1 is the simple structure composition frame chart of Anti-Spam of the present invention;
Fig. 2 is the concrete composition structural representation of buffer in the Anti-Spam of the present invention;
Fig. 3 is the concrete composition structural representation of authentication processing unit in the Anti-Spam server in the Anti-Spam of the present invention.
Embodiment
The cardinal principle of Anti-Spam design considerations of the present invention is as follows:
In the prior art, be used to receive the live load of the mail server of mail data bag, mainly cause owing to the concurrent connection of SMTP, promptly being based on smtp protocol between the mail server of mail server that sends the mail data bag and reception mail data bag shakes hands, in communication and the process that the mail data bag is received, may have a lot of platform sender mail servers is simultaneously communicating with this receipt mail server, receipt mail server is just being handled a lot of such communication instance simultaneously like this, and each communication instance all will cause receipt mail server to have a program process handling, the processing of each process can take CPU and memory source, and a plurality of communication instance also cause some to handle the expense of resource when handover process.
Because sender mail server may be from any one place, the whole world, communication channel between it and receipt mail server may not be fine, such communication instance just may reason exist for a long time on receipt mail server because channel quality is bad, speed is too slow, communication makes mistakes retry etc., so cause the concurrent connection number of receipt mail server very big, the receipt mail server live load is overweight.
Illustrate:
Received 120 envelope mails if receipt mail server is 2 minutes (120 seconds) equally, supposed that 120 sender mail servers sent an envelope mail by a sender mail server in per 1 second in these 120 seconds.If channel quality is fine and mail data containing amount is little between these sender mail servers and the receipt mail server, the time that sends an envelope mail, the number of concurrent connection all was 1 at each constantly on the receipt mail server like this less than 1 second.And if owing to reasons such as channel quality or mail data containing amount sizes, the time that causes sending an envelope mail is 2 seconds, the concurrent connection number order that then may appear at some moment on the receipt mail server reaches 2, by that analogy, if send the time of an envelope mail is 60 seconds, then may appear at some in the receipt mail server and have 60 concurrent connections constantly simultaneously, promptly in receipt mail server, there are 60 processes handling simultaneously, simultaneously the system resource that mutual switching has consumed receipt mail server again between these processes.Therefore concurrent as can be seen connection is the main cause that causes the receipt mail server live load overweight.
Though, the time of actual receiving and dispatching mail is at random, can not resemble above said regularly, but as can be seen: send same envelope mail, the channel quality between sender mail server and receipt mail server can influence the live load of receipt mail server.
For mail server that has existed or mail server array, its performance should satisfy all users that serve for it provides the corresponding work load to be prerequisite so.If on these mail servers, increase the Anti-Spam function so,, then may cause the performance deficiency of mail server because the Anti-Spam function can take the processing resource of mail server.For the user to same quantity provides service, just need to increase mail server like this.If use the Anti-Spam gateway, even Anti-Spam gateway and mail server carry out configuration in 1: 1, also require Anti-Spam gateway serviceability to be not less than the hardware platform of mail server, so these modes all can increase the cost of setting up Anti-Spam.
Based on above-mentioned analysis, Anti-Spam of the present invention proposes when setting up Anti-Spam, the mail server that at first uses a process transformation is as buffer, be that this buffer can be for being provided with the mail server of any Anti-Spam software, this buffer only is responsible for receiving the mail data bag that other mail servers send, wherein this buffer requires to have higher service behaviour, and the configuration of the mail server of its hardware configuration during with no spam processing capacity is identical.After this buffer receives the mail data bag, the mail data bag that receives is transmitted to coupled next stage mail server, this next stage mail server requires to have the Anti-Spam function, promptly this next stage mail server is the Anti-Spam server, and the legitimate mail packet that will be handled by this Anti-Spam server again, allow to receive is put into mailbox server.
With reference to Fig. 1, this figure is the simple structure composition frame chart of Anti-Spam of the present invention; Mainly comprise buffer 10 in this Anti-Spam, Anti-Spam server 20 and mailbox server 30, wherein the effect of each part is as follows:
Buffer 10, this buffer 10 can the receiving and dispatching mail packets, and transmit after being used for the mail data bag that receives added necessary header packet information; Wherein buffer 10 can use a mail server to carry out work;
Anti-Spam server 20, use high-speed local area network to be connected with buffer 10, be used for reception buffer 10 and transmit the mail data bag of coming, and by analyzing the mail data bag that has added header packet information through described buffer 10, judge whether the mail data bag is legal, if legal, then receive the mail data bag; Otherwise abandon the mail data bag; Wherein Anti-Spam server 20 can use the mail server that mail server that Anti-Spam software has been installed or use have the Anti-Spam function;
Mailbox server 30 is connected with Anti-Spam server 20, is used to deposit after Anti-Spam server 20 Anti-Spam analysis and judgement think legal mail data bag.
Wherein buffer 10 and Anti-Spam server 20 preferably place same high-speed local area network system.
The Anti-Spam that forms through above-mentioned configuration can be configured to the mail server of original demand buffer 10, the function that its work fundamental sum of being responsible for only receives the mail data bag is identical, so the receipt mail server of initial planning number just can be born the workload of former demand; Buffer 10 is transmitted to Anti-Spam server 20 with the mail data bag that receives, and the Anti-Spam server 20 here is the mail server that has increased the Anti-Spam function.Because buffer 10 and Anti-Spam server 20 are in the same high-speed local area network, transmission speed is very fast, can transmit with the fastest speed by the certified mail packet, the concurrent connection number that the mail of therefore same quantity produces in Anti-Spam server 20 will be far smaller than the concurrent connection number that a plurality of sender mail servers produce on buffer 10.
Like this, the main cause that live load in the Anti-Spam is produced: " concurrent connection number " is assigned in the different equipment and shares with " Anti-Spam processing ", be respectively buffer 10 and be responsible for a large amount of concurrent connection that non-express network transmission is produced, the 20 main processing Anti-Spam work of Anti-Spam server, because Anti-Spam server 20 is connected at a high speed with buffer 10, so that after the mail data bag of same quantity is transmitted to Anti-Spam server 20 through buffer 10, only produce the very concurrent connection of smallest number, Anti-Spam server 20 can be used for main resource overhead Anti-Spam to be handled, and can use lower than buffer 10 performances, the few computer of quantity is as Anti-Spam server 20.After distributing like this, needed cost input will reduce greatly when setting up Anti-Spam.
Experiment test: on a mail server that has 2000 multi-users, test, use the buffer 10 and the Anti-Spam server 20 of same hardware performance, wherein buffer 10 has more than 100 concurrent connection, and Anti-Spam server 20 only has a concurrent connection, not that is to say if do not consider Anti-Spam server 20 and itself handle the live load that is produced because of Anti-Spam, in this case, the mail that received of 100 buffers 10 can be handled by an Anti-Spam server 20; When having considered that Anti-Spam is handled the live load that is produced, the allocation ratio that also can reach between buffer 10 and the Anti-Spam server 20 is more than 10: 1.
Like this in the Anti-Spam framework, the user only need drop into less than 10% the expense of buying the mail server cost, just can increase the function of Anti-Spam under the prerequisite that does not reduce the mail treatment performance.
With reference to Fig. 2, this figure is the concrete composition structural representation of buffer in the Anti-Spam of the present invention; Wherein specifically comprise Transmit-Receive Unit 11, header packet information adding device 20 and retransmission unit 30 in the buffer 10, the effect of each part is as follows:
Transmit-Receive Unit 11 is used to receive mail data bag that other mail servers send and sends the mail data bag to other mail servers.
Header packet information adding device 12 is connected with Transmit-Receive Unit 11, is used to dock the receiving emails packet and adds header packet information; Wherein header packet information adding device 12 can comprise IP address interpolation subelement, is used for adding in the position, packet header that receives the mail data bag IP address information of the mail server that sends this mail data bag.Because send the mail server IP address of mail data bag is when shaking hands with the mail server generation TCP that receives the mail data bag, receipt mail server just can obtain, therefore after buffer 10 receives the mail data bag, when its mail data bag is transmitted to Anti-Spam server 20, Anti-Spam server 20 can not be learnt the IP address information of the mail server that sends this mail data bag, so need be after buffer 10 receives the mail data bag, the IP address information of the sender mail server that will learn by shaking hands is encapsulated into the position, packet header of mail data bag, and then be transmitted to Anti-Spam server 20, whether so that the sender mail server IP address information that Anti-Spam server 20 comprises in can the header packet information according to the mail data bag is analyzed this mail data bag is legitimate mail, to receive accordingly/discard processing.
Retransmission unit 13 is connected with header packet information adding device 12, and the mail data bag that is used for having been added header packet information by header packet information adding device 12 is transmitted to Anti-Spam server 20.
Because mailing system also must send mail to other mail servers, for stoping validated user illegally to use this Anti-Spam to send mail, wherein also need further to comprise authentication information Forward Proxy unit in the buffer 10, be used to obtain the user authentication information of the Mail Clients that sends the mail data bag, and the authentication information that obtains is transmitted to Anti-Spam server 20.
Accordingly, also to further comprise the authentication processing unit in the Anti-Spam server 20, be used for the authentication information that the authentication information Forward Proxy unit forwards that is comprised by buffer 10 is carried out authentication processing, judge whether the user who sends the mail data bag is validated user.
With reference to Fig. 3, this figure is the concrete composition structural representation of authentication processing unit in the Anti-Spam server in the Anti-Spam of the present invention; Wherein authentication processing unit 21 further comprises the first authentication processing subelement 211 and the second authentication processing subelement 212, and the effect of these two authentication processing subelements is as follows:
The first authentication processing subelement 211 is used for the authentication information that is come by Anti-Spam server 20 authentication information Forward Proxy unit forwards is carried out authentication processing, judges whether the user who sends the mail data bag is legal authenticated user;
The second authentication processing subelement 212, be connected with the first authentication processing subelement 211, be used for user who sends this mail data bag by the legal authenticated user after the first authentication processing subelement, 211 authentication processing and the authentication processing whether sender address conforms to are judged whether the validated user that sends the mail data bag is pretending to be others to send mail.
The above-mentioned reason that is provided with is because the application number of the applicant's first to file is in 200310116951.7 the patent of invention " method of Anti-Spam "; the junk-mail preventing method that proposes based on the traceability of mail; here further specify at this; in application number is 200310116951.7 patent; whether the main mail server of protecting reception mail data bag that is stressed that is not subjected to the invasion of spam, use the legal mail server of its place domain name to send and be basic foundation to check mail sender address information.And in the Anti-Spam of the present invention, when having reduced system's work-load, can prevent that the mail server that sends the mail data bag is utilized to as sending the platform of spam to others; Prevent that sender mail server is as the platform that sends spam, here be exactly by checking that whether the user who sends mail is that the validated user of native system is realized, but conventional method only requires that the user authentication information authentication is by getting final product, do not require that authenticated user and mail sender are same users, be that local validated user can pretend to be others to send mail, like this not in full conformity with the requirement of traceability.
So Anti-Spam of the present invention proposes the requirement of traceability is used to prevent that the local user from pretending to send mail here, whether the sender who further checks authenticated user and mail is consistent, if inconsistent then do not allow to send.Prevented that like this camouflage between the local user from sending, the name that has also prevented local other users of viral automatic use sends virus email, thereby the traceability inspection of spam is checked to the end, prevented to receive that the spam that sends this locality may cause the complaint and the legal dispute of other mail servers.
With software mode Anti-Spam is operated in when moving on the mail server, system can directly obtain the IP address of sender mail server; And when sending mail, can directly provide the authentication information of authenticated user;
When working with the Anti-Spam gateway mode, the Anti-Spam gateway can obtain the IP address information of sender mail server, but user's authentication information can't directly be provided, need authentication proxy and authentication information is transmitted to protected receipt mail server authenticates;
When working with buffer structure in the Anti-Spam of the present invention, Anti-Spam server 20 is in after the buffer 10, also can't obtain the IP address information of sender mail server, user's certification work also will be by buffer 10 direct controls, therefore buffer 10 must be write the IP address information of sender mail server in the header packet information of mail data bag, and buffer 10 also wants can to realize obtaining the user's who sends mail authentication information, then authentication information is transmitted to Anti-Spam server 20 and forbids that the disabled user sends the operation of mail.
Because Anti-Spam is handled the three kinds of modes that mainly contain: 1. connect control (average load, prevent big impact), 2. validity checking (comprises that the applicant's application number is 200310116951.7 patent application: the traceability inspection), 3. information filtering, information filtering task load maximum wherein, as long as therefore will based on the Anti-Spam of information filtering handle with SMTP concurrent be connected to split in distinct device finish, just can farthest reduce live load, the raising service behaviour.Wherein connect control and validity checking and can be placed on Anywhere, as with newly put, the situation that makes things convenient for of modes such as transformation or outsourcing service handles.
Like this, above-mentioned by after the buffered of buffer 10, the task load that arrives back Anti-Spam server 20 will reduce greatly, therefore the mode of Anti-Spam function with software can be placed in the mail server, be exactly top said Anti-Spam server 20.
Below be several concrete performances:
Specific embodiment 1:
Prior art:,, share the live load of Anti-Spam jointly according to the priority of mail exchange record MX definition and the selection at random of same priority if original mailing system has many mail servers.After getting the mail by each mail server, mail is put into the subscriber mailbox of mailbox server by NFS (NFS, Network File System) agreement.
The present invention: former mail server all changes buffer 10 into, and it is constant to share the task load mode.After each buffer 10 gets the mail, do not put into subscriber mailbox, but as above-mentioned process after the work that will do on the buffer 10, be transmitted to the lower Anti-Spam server 20 of negligible amounts or performance.After Anti-Spam server 20 is handled, the mail that allows to receive is put into the subscriber mailbox of mailbox server 30 by the NFS agreement.
One-tenth should be less than 1/10 of former mailing system on the hardware for increase Anti-Spam function is made an investment in for the user.
Specific embodiment 2: newly-built mailing system with Anti-Spam function
Use the improved scheme of above-mentioned specific embodiment 1, when newly-built when having the mailing system of Anti-Spam function, or computer that performance higher more with quantity be as buffer 10, with the lower computer of negligible amounts or performance as Anti-Spam server 20.
User cost investment Anti-Spam processing section should be less than 1/10 of mailing system itself.
Specific embodiment 3: the anti-garbage disposal center of revising the MX configuration
For small-sized mailing system, double transmission, receipt mail server and a mailbox server done of mail server may only be arranged, at this moment aiming at Anti-Spam handle to increase the Anti-Spam gateway or uses the buffer structure may be all uneconomical, the software realization mode of Anti-Spam may be a way, but may increase the live load of mail server, cause needs to increase mail server.
In addition,, increase the Anti-Spam gateway or use buffer will cause increasing the trustship machine, improved user's trustee's fee and used at the mail server of trustship at Internet data center (IDC, Internet Data Center).
Similar above two kinds of situations, can provide the Anti-Spam processing center by the Anti-Spam enterprise of specialty, allow the user that the Anti-Spam processing center is pointed in the mail exchange record MX definition of domain name resolution server DNS, the mail that receives the mail user territory like this will at first send to the Anti-Spam processing center with receiving mail, after the Anti-Spam processing center was carried out analyzing and processing to mail, the mail that will allow again to receive was transmitted to user's mail server.
Here need the user that oneself mail server is defined as and receive only the mail of sending from the Anti-Spam processing center, the Anti-Spam processing center of walking around mail exchange record MX appointment to prevent the rubbish sender from knowing the IP address of user mail server directly sends spam to the user mail server.
The Anti-Spam processing center of above-mentioned specialty comprises above-mentioned buffer 10 and Anti-Spam process software, and should be high-performance, jumbo.Because the mail server at Anti-Spam processing center and user place is not together, different with specific embodiment 1 and 2 is, the Anti-Spam process software may not can be put into user's mailbox server with the mail that allows to receive by the NFS agreement, but is transmitted to user's receipt mail server.Processing is actually the Anti-Spam server 20 in the previous examples is divided into Anti-Spam processor and mail server two parts like this, and wherein the Anti-Spam processor is placed on the Anti-Spam processing center, and mail server is placed on the user place.If Anti-Spam processing center and mail server are in same trustship enterprise (such as IDC) machine room, then the Anti-Spam processing center is in Anti-Spam, can greatly reduce the live load of mail server, also just reduced demand, thereby reduced user's input cost the mail server performance.
Specific embodiment 4: the anti-garbage disposal center that need not to revise the MX configuration
Specific embodiment 3 also can need not to revise mail exchange record MX definition, and the main purpose of doing like this is not wish that others knows that user's mail server has pointed to the IP address of non-our company, our unit.Handling the back like this will carry out on user's mail server: all are not the mails of sending from the Anti-Spam processing center, all will directly be transmitted to the Anti-Spam processing center; The mail that all are sent from the Anti-Spam processing center all will directly receive and put into mailbox server.
The above only is a preferred implementation of the present invention, should be pointed out that this programme (mode with buffer improves overall price/performance ratio) though be used for Anti-Spam in above-mentioned introduction, also can be used for other real case.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 (9)
1, a kind of Anti-Spam is characterized in that, comprising:
Buffer that can the receiving and dispatching mail packet, described buffer are used for the mail data bag that receives is carried out buffered, and transmit after the mail data bag that receives added header packet information; With
The Anti-Spam server that is connected with described buffer, described Anti-Spam server is used for reception buffer and transmits the mail data bag of coming, and, judge whether the mail data bag is legal by analyzing the mail data bag that has added header packet information through described buffer.
2, Anti-Spam according to claim 1, it is characterized in that, also comprise the mailbox server that is connected with described Anti-Spam server, described mailbox server is used to deposit thinks legal mail data bag after Anti-Spam server analysis and judgement.
3, Anti-Spam according to claim 1 is characterized in that, described buffer and Anti-Spam server place same LAN system.
4, Anti-Spam according to claim 1 is characterized in that, described Anti-Spam server is mail server or the mail server for having the Anti-Spam function that Anti-Spam software is installed.
5, Anti-Spam according to claim 1 is characterized in that, the mail server of described buffer for transforming further comprises in the mail server of described buffer or transformation:
Transmit-Receive Unit is used to receive mail data bag that other mail servers send and sends the mail data bag to other mail servers;
The header packet information adding device is connected with described Transmit-Receive Unit, is used to dock the receiving emails packet and adds header packet information; With
Retransmission unit is connected with described header packet information adding device, is used for the mail data bag that has added header packet information is transmitted.
6, Anti-Spam according to claim 5, it is characterized in that, described header packet information adding device further comprises IP address interpolation subelement, is used for adding in the position, packet header that receives the mail data bag IP address information of the mail server that sends this mail data bag.
7, Anti-Spam according to claim 5 is characterized in that, also further comprises in the described buffer:
Authentication information Forward Proxy unit is used to obtain the user authentication information that sends the mail data bag, and the authentication information that obtains is transmitted to described Anti-Spam server.
8, Anti-Spam according to claim 7, it is characterized in that, further comprise the authentication processing unit in the described Anti-Spam server, be used for the authentication information that described authentication information Forward Proxy unit forwards is come is carried out authentication processing, and judge whether the validated user that sends the mail data bag pretends to be others to send mail.
9, Anti-Spam according to claim 8 is characterized in that, described authentication processing unit further comprises:
The first authentication processing subelement is used for the authentication information that described authentication information Forward Proxy unit forwards is come is carried out authentication processing, judges whether the user who sends the mail data bag is legal authenticated user;
The second authentication processing subelement, be connected with the described first authentication processing subelement, be used for user who sends this mail data bag by the legal authenticated user after the first authentication processing subelement authentication processing and the authentication processing whether sender address conforms to are judged whether the validated user that sends the mail data bag pretends to be others to send mail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100316922A CN1286305C (en) | 2004-04-13 | 2004-04-13 | System of preventing refuse postal matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100316922A CN1286305C (en) | 2004-04-13 | 2004-04-13 | System of preventing refuse postal matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1564549A true CN1564549A (en) | 2005-01-12 |
| CN1286305C CN1286305C (en) | 2006-11-22 |
Family
ID=34481270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100316922A Expired - Fee Related CN1286305C (en) | 2004-04-13 | 2004-04-13 | System of preventing refuse postal matter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1286305C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104580420A (en) * | 2014-12-26 | 2015-04-29 | 北京中交兴路车联网科技有限公司 | Trans-IDC (internet data center) data transmission system and method |
-
2004
- 2004-04-13 CN CNB2004100316922A patent/CN1286305C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104580420A (en) * | 2014-12-26 | 2015-04-29 | 北京中交兴路车联网科技有限公司 | Trans-IDC (internet data center) data transmission system and method |
| CN104580420B (en) * | 2014-12-26 | 2017-12-15 | 北京中交兴路车联网科技有限公司 | A kind of data transmission system and method across IDC |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1286305C (en) | 2006-11-22 |
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