CN101778059A - Mail processing method, gateway equipment and network system - Google Patents
Mail processing method, gateway equipment and network system Download PDFInfo
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- CN101778059A CN101778059A CN201010110276A CN201010110276A CN101778059A CN 101778059 A CN101778059 A CN 101778059A CN 201010110276 A CN201010110276 A CN 201010110276A CN 201010110276 A CN201010110276 A CN 201010110276A CN 101778059 A CN101778059 A CN 101778059A
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Abstract
The embodiment of the invention provides a mail processing method, gateway equipment and a network system, wherein the mail processing method comprises the following steps that: mails sent to a client end by a server are intercepted; safety detection is carried out to the mails; before the safety detection is completed, keep-alive data is sent to the client end; and the keep-alive data comprises the data in the headers of the mails or safety data unrelated to the mails. The technical scheme provided by the embodiment of the invention can improve the network security while reducing the timeout phenomenon when the client end receives the mails.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of email processing method, gateway device and network system.
Background technology
Fast development along with the Internet technology, Email has become a kind of quick, economic communication technique, yet, Email also becomes the important carrier that spam, virus, rogue program or sensitive content are propagated when communication extremely easily is provided for people, system safety has been caused serious threat, therefore, the Mail Gateway equipment that possesses anti-spam functionality at wire-speed and viral measuring ability simultaneously is widely used.
In application process, the mail that the gateway device intercept server sends determines by detecting Mail Contents whether mail is whether spam and mail carry virus.Concrete, all data (comprising annex) of gateway device elder generation buffer memory mail, by data are decoded, means such as decompress(ion) restore original, content to the original that restores detects then, so that determine whether this mail is whether spam and this mail carry virus, when this mail is not a spam and when not carrying virus, again this mail is transmitted to client.
Generally, user end to server sends and gets after the commands for mail, with regard to replying of waiting for server, but because a variety of causes such as network delay, nearly all client all is provided with a time threshold, if in this time period, do not receive mail data from server, client just think between client and server be connected overtime, interruption connection and prompting user connect overtime, avoid the dateless wait of user.After application gateway equipment, owing to need the buffer memory mail data to carry out content detection, during data cached, client can't be received the mail data of server in real time, when gateway device data in buffer amount bigger, perhaps when longer, will certainly cause client the overtime situation of above-mentioned connection to occur to the content detection time of the original that restores.Therefore, occur connecting overtime situation in order to reduce client, common in gateway device buffer memory mail data in the prior art, transmit the part mail data and give client, not overtime to guarantee server with being connected of client.
The inventor finds in realizing process of the present invention, in the prior art, because during gateway device buffer memory mail, it is overtime with being connected of client to guarantee server to send the part mail data to client, because the part mail data that is sent is not pass through content detection, but thereby just there has been virus or has been junk data in the mail data of the subject of knowledge and the object of knowledge transmission, client is received carry viral mail data or spam data, cause the disabler of gateway device.
Summary of the invention
The embodiment of the invention provides a kind of email processing method, gateway device and network system, can improve internet security in the overtime phenomenon in reducing client reception mail process.
An aspect according to the embodiment of the invention provides a kind of:
A kind of email processing method comprises:
The mail that intercept server sends to client;
Described mail is carried out safety detection;
Before described safety detection is finished, send the keep-alive data to described client, described keep-alive data comprise among the mail head of described mail data or with the irrelevant secure data of described mail.
A kind of gateway device comprises:
Receiving element is used for the mail that intercept server sends to client;
The content detection unit is used for described mail is carried out safety detection;
Transmitting element was used for before described safety detection is finished, and sent the keep-alive data to described client, described keep-alive data comprise among the mail head of described mail data or with the irrelevant secure data of mail.
A kind of network system comprises server and above-mentioned gateway device, and described server is used for sending mail to client.
Technical scheme described in the embodiment of the invention is by the mail of interception from server; it sent the keep-alive data always before safety detection is finished; the keep-alive data be among the mail head data or with the irrelevant secure data of mail; during the mail buffer memory, can receive the secure data that gateway device sends to guarantee client; think that the connection between client and server is normal; can not interrupt with server between be connected; and because the forgery mail data that gateway device sends is believable; thereby dangerous information such as virus or spam data can not sent to client, guaranteed the safety of client.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use among the embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the email processing method that provides for one embodiment of the invention;
Fig. 2 is the email processing method that provides for another embodiment of the present invention;
Fig. 3 is the gateway device structure chart that one embodiment of the invention provides;
Fig. 4 is the gateway device structure chart that another embodiment of the present invention provides;
Fig. 5 is the network architecture figure that the embodiment of the invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Consult Fig. 1, a kind of email processing method that Fig. 1 provides for one embodiment of the invention, this method comprises:
101, intercept server is to the mail of client transmission.
The executive agent of this each step of embodiment can be a gateway device.
102, described mail is carried out safety detection.
Whether wherein, mail being carried out safety detection is specially: determine whether this mail carries virus or be spam.Before safety detection, the data of mail of interception are carried out buffer memory.
103, before safety detection is finished, send the keep-alive data to described client, described keep-alive data comprise among the mail head of described mail data or with the irrelevant secure data of mail.
Wherein, sending the keep-alive data to client specifically can comprise: send the keep-alive data to described client at interval to schedule; described predetermined time interval is less than the default time threshold of client, and described time threshold is the maximum duration that client allows not receive the server mail when keeping with being connected of server.
Wherein, step 103 is not to carry out after step 102, but just begins to have carried out during the mail buffer memory in step 101.Wherein, the data among the mail head are for meeting Request for Comment (Request ForComments, RFC) field of 822 definition; Perhaps, be the field that meets the RFC822 definition with the irrelevant secure data of mail.Wherein, the field of the described RFC822 of meeting definition is the User Defined field, and this User Defined field is the field with " X-" beginning.
Wherein, the Email of RFC822 definition comprises two parts, mail head and mail body, and the mail head is also referred to as the letter head, and the mail body is also referred to as the main body of mail.Wherein, mail head's field comprises: e-mail sending address, address, mail reception side, mail matter topics, mail date and remarks etc.Usually virus all is carried in the mail body, so can be with the data among the mail head as the keep-alive data.Because data among these mail head or do not relate to particular content in the mail body with the irrelevant secure data of mail can be thought the mail data that gateway device is forged, the mail data of these forgeries only is used to keep being connected between client and server.
Further, when mail being carried out after safety detection finishes,, then send this mail to client if this mail does not carry virus and be not spam; If this mail carries virus, then abandon this mail, perhaps this mail is carried out filtration treatment, the mail after client sends filtration treatment; If this mail is a spam, then abandons this mail or in the theme of mail, add warning message, the mail after client sends the adding warning message.
Gateway device in the embodiment of the invention by interception from the mail of the server row cache of going forward side by side; and before being finished, the safety detection of mail sends the keep-alive data to client always; the keep-alive data be among the mail head data or with the irrelevant secure data of mail; make client during the mail buffer memory, can receive the mail data that gateway device is forged; think that the connection between client and server is normal; can not interrupt with server between be connected; therefore; can reduce the fail safe that improves the mail data that sends to client in the overtime phenomenon of client in reception mail process, and then the fail safe that has improved client.
In order to make the embodiment of the invention clearer, will be described in detail email processing method by another embodiment below, consult Fig. 2, this method comprises:
201, the mutual handshake information of client and gateway device connects between client and gateway device.
202, gateway device and server interaction handshake information connect between gateway device and server.
203, client is sent authentication request, and gateway device is tackled this authentication request, and this authentication request is sent to server.
204, server authenticates client, behind authentication success, sends the authentication response message of indication authentication success, and gateway device is tackled this authentication response message, and this authentication response message is sent to client.
Concrete, in authentication request, can carry username and password, whether server is legal according to this username and password checking user, if legal, then represents the client certificate success.
205, client is sent and is got commands for mail, and gateway device is tackled this and got commands for mail, this is got commands for mail send to server.
206, server receives that client sends get commands for mail after, send mail.
207, the mail that sends of gateway device intercept server is resolved and the data of the mail that buffer memory is tackled, and judges whether this mail finishes, if, represent that then this mail finishes receiving, carry out 209, if not, continue to resolve and the data of this mail of buffer memory.
Concrete, have the mail end mark if detect in the mail data of reception, represent that then this mail finishes.
208, gateway device is from the buffer memory mail, before safety detection is finished, at interval send the mail data of forging to schedule to client end, the mail data of this forgery can be among the mail head of this mail data or with the irrelevant data of this mail.
Concrete, the mail data of forging in the embodiment of the invention can be the self-defining data of server among the mail head, or the field with " X-" beginning that meets the RFC822 protocol definition of gateway device structure.
Because client generally can be set a time threshold, if in this time, do not receive from the mail data of server and just think that client is overtime with being connected of server, so gateway device sends the mail data of forging to client to schedule at interval, the gateway device preset time is less than or equal to the time threshold that client is provided with at interval, can because of for a long time can not receive mail data not think that to guarantee client connection is overtime.
Because Email can comprise two parts, mail head and mail body, the data content among the mail head specifically can be as follows:
From：“first”<first@163.com>
To：“second@163.com”
Subject：hello
Dae：Sun，27?Sep?2009?11:57:21+0800
MIME-Version：1.0
Content-Type：multipart/alternative；
boundary＝“----＝_NextPart_000_0006_01CA3F69.ACD9C7B0”
X-Priority：3
X-MSMail-Priority：Normal
X-Mailer：Microsoft?Outlook?Express?6.00.2900.3598
X-MimeOLE：Produced?By?Microsoft?MineOLE?V6.00.2900.3350
Wherein, " X-Priority, X-MSMail-Priority, X-Mailer, X-MimeOLE " is the self-defined information that the transmit leg (as the outlook of transmit leg) of mail adds, and is used to represent the extended attributes such as priority of mail.Wherein, X-Priority is the present normally used priority dividing mode of each client, 1 expression high priority, and 2 expression normal priorities and 3 are low priority; X-MSMail-Priority is that outlook software oneself has defined a cover priority; That X-Mailer shows that the transmit leg of mail uses is outlook express; X-MimeOLE shows that the client that the transmit leg of mail uses is the product of which company.
Usually, after client generated mail and mail sent, server can be preserved the mail that this client is sent, and above-mentioned transmit leg is a client of sending mail.
The mail data of forging in the embodiment of the invention can be the field that starts with " X-" among the mail head, because these fields can be the fields of RFC822 protocol definition, so that client can correctly receive these fields.The mail data of forging in the embodiment of the invention also can be gateway device structure be the field of beginning with " X-", as X-Keeplive 1 and X-Keeplive2.
209, gateway device carries out safety detection to this mail, execution in step 210.
When mail reception was finished, gateway device can reduce to the mail data of institute's buffer memory, determined whether this mail is spam, and scanned this mail whether virus is arranged.
Wherein, gateway device can be according to syntactic structure, a sentence is disassembled according to composition (part of speech composition), find keyword, calculate the weighted value of keyword then, for example, " recommendation " and " medicine " both keyword is arranged in the sentence, the number of times that statistics " recommendation " this speech occurs in mail, the number of times that statistics " medicine " this speech occurs in mail determines according to statistics whether mail is spam.
Wherein, whether scan mail has virus to scan mail by using viral engine, such as using a certain antivirus software scan mail whether virus is arranged.
Because the mail that transmits in network all is the mail behind the coding usually, so need the mail data of institute's buffer memory be reduced.Wherein, the mail data of institute's buffer memory reduced comprise: by the mail data of institute's buffer memory is decoded, means such as decompress(ion) restore original.Wherein, the mode of decoding includes but not limited to modes such as Base64 decoding, QP (Quoted-Printable) decoding.
210, gateway device determines whether the mail from server is transmitted to client according to the testing result of step 209; Perhaps the mail from server is handled, processed mail is sent to client according to the testing result of step 209.
Such as, if the testing result of step 209 is not carried virus for this mail and is not spam, then transmit mail to client in this step,, then this mail can be abandoned if 209 testing result carries virus for this mail or this mail is a spam from server; Perhaps, if the testing result of step 209 is a spam for this mail, then gateway device can add warning information in mail matter topics, sends the mail that has added warning information to client then; If the testing result of step 209 is carried virus for this mail, then gateway device carries out filtration treatment to mail, promptly adopts antivirus software that mail is killed virus, the mail after client sends filtration treatment.
211, client disconnects and being connected of server.
Concrete, client is sent and is withdrawed from message (quit), and the request disconnection is connected with server; Gateway device withdraws from this from forwards and gives server; Server sends withdrawing from the response message of message, and gateway device will send to client to the response message that withdraws from message, and client disconnects with server and being connected.
Gateway device in the embodiment of the invention is by mail and the buffer memory of interception from server, and before finishing, safety detection sends the keep-alive data to client always, the keep-alive data be among the mail head data or with the irrelevant secure data of mail, during the mail buffer memory, can receive the mail data that gateway device is forged to guarantee client, think that the connection between client and server is normal, can not interrupt with server between be connected; Because to the client transmission is the mail data of forging, and the data in the real mail body are keeping fully, be transmitted to afterwards client again Deng Mail Contents detection processing, so can not give client with the data forwarding that carries dangerous information, therefore, can reduce the fail safe that improves the mail data that sends to client in the overtime phenomenon of client in reception mail process, and then the fail safe that has improved client.
Consult Fig. 3, one embodiment of the invention provides a kind of gateway device, and it comprises:
Receiving element 301 is used for the mail that intercept server sends to client;
Be used for specifically determining whether this mail carries virus or whether be spam.
Transmitting element 303; be used at intercept server after the mail that client sends; before described safety detection is finished, send the keep-alive data to described client, described keep-alive data comprise among the mail head of described mail data or with the irrelevant secure data of mail.
Wherein, the data among the mail head are the field of RFC822 definition; Perhaps, be the field that meets the RFC822 definition with the irrelevant secure data of mail.Wherein, the field that meets the RFC822 definition is the User Defined field, and this User Defined field is the field with " X-" beginning.
Wherein, the Email of RFC822 definition comprises two parts, mail head and mail body, and the mail head is also referred to as the letter head, and the mail body is also referred to as the main body of mail.Wherein, mail head's field comprises: e-mail sending address, address, mail reception side, mail matter topics, mail date and remarks etc.Usually virus all is carried in the mail body, so can be with the data among the mail head as the keep-alive data.Because data among these mail head or do not relate to particular content in the mail body with the irrelevant secure data of mail can be thought the mail data that gateway device is forged, the mail data of these forgeries only is used to keep being connected between client and server.
Gateway device in the embodiment of the invention is by the mail of interception from server; and before being finished, the safety detection of mail sends the keep-alive data to client always; the keep-alive data be among the mail head data or with the irrelevant secure data of mail; make client during the mail buffer memory, can receive the mail data that gateway device is forged; think that the connection between client and server is normal; can not interrupt with server between be connected; therefore; can reduce the fail safe that improves the mail data that sends to client in the overtime phenomenon of client in reception mail process, and then the fail safe that has improved client.
Fig. 4 shows the gateway device structure chart that another embodiment of the present invention provides, and the embodiment of the invention also comprises on the basis of as shown in Figure 3 embodiment:
Optionally; transmitting element 303 specifically is used at intercept server after the mail that client sends; before safety detection is finished; send the keep-alive data to client at interval to schedule; wherein; predetermined time interval is less than the default time threshold of client, and this time threshold is the maximum duration that client allows not receive the server mail when keeping with being connected of server.
Further, the described gateway device of the embodiment of the invention can also comprise:
The first mail treatment unit 405 is used for when safety detection result represents that described mail does not carry virus and is not spam, and control transmitting element 303 sends described mail to described client;
The second mail treatment unit 406 is used for abandoning described mail when safety detection result represents that described mail carries virus, perhaps described mail is carried out filtration treatment, the mail of control transmitting element 303 after client sends filtration treatment;
The 3rd mail treatment unit 407, be used for when safety detection result represents that described mail is spam, abandon described mail, perhaps in the theme of described mail, add warning message, the mail of control transmitting element 303 after client sends the adding warning message.
Concrete, transmitting element 303 also is used for sending corresponding mail to client under the control of the first mail treatment unit 405, the second mail treatment unit 406, the 3rd mail treatment unit 407.
Gateway device in the embodiment of the invention is by the mail of interception from server, and before finishing, safety detection sends the keep-alive data to client always, the keep-alive data be among the mail head data or with the irrelevant secure data of mail, during the mail buffer memory, can receive the mail data that gateway device is forged to guarantee client, think that the connection between client and server is normal, can not interrupt with server between be connected; Because to the client transmission is the mail data of forging, and the data in the real mail body are keeping fully, be transmitted to afterwards client again Deng Mail Contents detection processing, so can not give client with the data forwarding that carries dangerous information, therefore, can reduce the fail safe that improves the mail data that sends to client in the overtime phenomenon of client in reception mail process, and then the fail safe that has improved client.
Consult Fig. 5, the embodiment of the invention provides a kind of network system, and this network system comprises:
Wherein, the specific descriptions of gateway device 501 can be referring to the description of above-mentioned embodiment about gateway device, and the information interaction in this network system between each equipment specifically referring to the corresponding description of method embodiment, does not repeat them here.
Gateway device in the embodiment of the invention is by the mail of interception from server, and before finishing, safety detection sends the keep-alive data to client always, the keep-alive data be among the mail head data or with the irrelevant secure data of mail, during the mail buffer memory, can receive the mail data that gateway device is forged to guarantee client, think that the connection between client and server is normal, can not interrupt with server between be connected; Because to the client transmission is the mail data of forging, and the data in the real mail body are keeping fully, be transmitted to afterwards client again Deng Mail Contents detection processing, so can not give client with the data forwarding that carries dangerous information, therefore, can reduce the fail safe that improves the mail data that sends to client in the overtime phenomenon of client in reception mail process, and then the fail safe that has improved client.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-OnlyMemory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
More than email processing method, gateway device and network system that the embodiment of the invention provided are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. an email processing method is characterized in that, comprising:
The mail that intercept server sends to client;
Described mail is carried out safety detection;
Before described safety detection is finished, send the keep-alive data to described client, described keep-alive data comprise among the mail head of described mail data or with the irrelevant secure data of described mail.
2. method according to claim 1 is characterized in that,
Data among the described mail head comprise the field that meets Request for Comment RFC822 definition;
Perhaps,
The described secure data that has nothing to do with mail comprises the field that meets the RFC822 definition.
3. according to each described method of claim 1 to 2, it is characterized in that, describedly send the keep-alive data to described client and comprise:
At interval send the keep-alive data to described client to schedule, described predetermined time interval is less than the default time threshold of client, and described time threshold is the maximum duration that client allows not receive the server mail when keeping with being connected of server.
4. according to each described method of claim 1 to 2, it is characterized in that this method also comprises:
If when safety detection result represents that described mail does not carry virus and is not spam, send described mail to described client;
If safety detection result when representing that described mail carries virus, abandons described mail or described mail is carried out sending to described client after the filtration treatment;
When if safety detection result represents that described mail is spam, send to described client after abandoning described mail or in the theme of described mail, adding warning message.
5. a gateway device is characterized in that, comprising:
Receiving element is used for the mail that intercept server sends to client;
The content detection unit is used for described mail is carried out safety detection;
Transmitting element was used for before described safety detection is finished, and sent the keep-alive data to described client, described keep-alive data comprise among the mail head of described mail data or with the irrelevant secure data of mail.
6. gateway device according to claim 5 is characterized in that,
Data among the described mail head comprise the field that meets the RFC822 definition;
Perhaps,
The described secure data that has nothing to do with mail comprises the field that meets the RFC822 definition.
7. according to claim 5 or 6 described gateway devices, it is characterized in that,
Described transmitting element; be used for before safety detection is finished; send the keep-alive data to described client at interval to schedule; described predetermined time interval is less than the default time threshold of client, and described time threshold is the maximum duration that client allows not receive the server mail when keeping with being connected of server.
8. according to claim 5 or 6 described gateway devices, it is characterized in that, also comprise:
The message generation unit is used to generate the keep-alive data, and described keep-alive data comprise and the irrelevant secure data of described mail;
Described transmitting element is used for sending the keep-alive data that the message generation unit generates to described client before safety detection is finished.
9. according to claim 5 or 6 described gateway devices, it is characterized in that, also comprise:
The first mail treatment unit is used for controlling described transmitting element and sending described mail to described client when safety detection result represents that described mail does not carry virus and is not spam;
The second mail treatment unit is used for abandoning described mail when safety detection result represents that described mail carries virus, perhaps described mail is carried out controlling the mail of described transmitting element after client sends filtration treatment after the filtration treatment;
The 3rd mail treatment unit is used for abandoning described mail when safety detection result represents that described mail is spam, perhaps controls the mail of described transmitting element after client sends the adding warning message in the theme of described mail after the adding warning message;
Transmitting element also is used for sending corresponding mail to client under the control of the first mail treatment unit, the second mail treatment unit, the 3rd mail treatment unit.
10. a network system is characterized in that, comprises server and as any described gateway device of claim 5-9, and described server is used for sending mail to client.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010110276A CN101778059A (en) | 2010-02-09 | 2010-02-09 | Mail processing method, gateway equipment and network system |
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| CN201010110276A CN101778059A (en) | 2010-02-09 | 2010-02-09 | Mail processing method, gateway equipment and network system |
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| CN102833240A (en) * | 2012-08-17 | 2012-12-19 | 中国科学院信息工程研究所 | Malicious code capturing method and system |
| CN104734939A (en) * | 2013-12-24 | 2015-06-24 | 华为技术有限公司 | Session keep-alive method and device |
| CN105592028A (en) * | 2014-11-17 | 2016-05-18 | 杭州迪普科技有限公司 | Method, apparatus and system for blocking email |
| CN106681710A (en) * | 2016-11-30 | 2017-05-17 | 上海富欣智能交通控制有限公司 | Interface display method for rail transit field |
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| CN109802883A (en) * | 2018-12-27 | 2019-05-24 | 南京信息职业技术学院 | A kind of e-mail transmission method and its system |
| CN112615772A (en) * | 2020-11-16 | 2021-04-06 | 北京明朝万达科技股份有限公司 | Method and device for disassembling and reassembling mail based on scanning system |
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| CN102833240B (en) * | 2012-08-17 | 2016-02-03 | 中国科学院信息工程研究所 | A kind of malicious code catching method and system |
| CN102833240A (en) * | 2012-08-17 | 2012-12-19 | 中国科学院信息工程研究所 | Malicious code capturing method and system |
| CN104734939B (en) * | 2013-12-24 | 2017-11-24 | 华为技术有限公司 | Session keep-alive method and equipment |
| CN104734939A (en) * | 2013-12-24 | 2015-06-24 | 华为技术有限公司 | Session keep-alive method and device |
| CN105592028A (en) * | 2014-11-17 | 2016-05-18 | 杭州迪普科技有限公司 | Method, apparatus and system for blocking email |
| CN106681710A (en) * | 2016-11-30 | 2017-05-17 | 上海富欣智能交通控制有限公司 | Interface display method for rail transit field |
| CN107370747A (en) * | 2017-08-14 | 2017-11-21 | 北京奇安信科技有限公司 | A kind of method and device for preventing malicious file from propagating |
| CN109802883A (en) * | 2018-12-27 | 2019-05-24 | 南京信息职业技术学院 | A kind of e-mail transmission method and its system |
| CN109802883B (en) * | 2018-12-27 | 2021-07-30 | 南京信息职业技术学院 | Mail transmission method and system thereof |
| CN112615772A (en) * | 2020-11-16 | 2021-04-06 | 北京明朝万达科技股份有限公司 | Method and device for disassembling and reassembling mail based on scanning system |
| CN112615772B (en) * | 2020-11-16 | 2022-07-12 | 北京明朝万达科技股份有限公司 | Method and device for disassembling and reassembling mail based on scanning system |
| CN113506080A (en) * | 2021-06-11 | 2021-10-15 | 荣耀终端有限公司 | Mail processing method and electronic equipment |
| CN113506079A (en) * | 2021-06-11 | 2021-10-15 | 荣耀终端有限公司 | Mail creating method and electronic equipment |
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Application publication date: 20100714 |