TWI569608B - A computer program product and e-mail transmission method thereof for e-mail transmission in monitored network environment - Google Patents

Description

Computer program product for controlling network transmission of email and its email transmission method

The present invention relates to a computer program product for email transmission and a method thereof, and more particularly to a computer program product and method for transmitting email under a regulated network.

In order to improve the efficiency of the work, the current enterprises use the e-mail to conduct round-trip documents. In order to comply with the provisions of the Personal Data Protection Act and to avoid leakage of internal information, the current email management server will check the keyword of the content of the letter, and intercept or return the letter when the letter appears to be a controlled keyword. .

In some countries where network monitoring is more active, specific sensitive keywords are also controlled. When the number of keywords to be controlled is too large, e-mails sent by foreign companies to the country are easily controlled. The system intercepts or bounces the letter, which hinders the operation of the communication between the two parties.

In order to solve the aforementioned problems, the conventional e-mail server encrypts the e-mail content, so that the policing terminal cannot find the policing keyword from the content, but the cipher text is mostly random number encoding, so the management system only needs to be in the text. By performing statement analysis, it can be known that the email is processed through encryption and the email is controlled. This processing mode will result in Into a larger counter effect.

In summary, how to provide a technology for transmitting e-mail in a regulated network environment is a technical problem that needs to be solved in the field.

In order to solve the problems disclosed above, it is an object of the present invention to provide a technical means for regulating network transmission of electronic mail.

To achieve the above object, the present invention proposes a computer program product for regulating the transmission of e-mail on a network. The computer program product described above determines that part or all of the transmission path of the e-mail is located in the control network, and the e-mail is divided into a plurality of mail files for transmission.

To achieve the above object, the present invention provides an electronic mail transmission method for regulating network transmission of electronic mail. The foregoing method determines that part or all of the transmission path of the email is located in the control network, and then divides the email into a plurality of mail files for transmission.

In summary, the computer program product and method thereof of the present invention can be free from resending the entire e-mail when the keyword control measures are encountered, and can be effectively effective by dividing and transmitting the e-mail to the regulated network environment. Save system processing resources and the bandwidth of the transmission.

1‧‧‧Email transmission system

11‧‧‧E-mail transmission device

12‧‧‧Using the end device

13‧‧‧Email

131‧‧‧ mail file

132‧‧‧Sub-mail file

2‧‧‧ routing node

21‧‧‧First transmission channel

22‧‧‧Second transmission channel

3‧‧‧Control Network

30‧‧‧Control network server

31‧‧‧Receiver Servo

32‧‧‧ Receiving device

FIG. 1 is a schematic diagram of an application environment of an email transmission system according to the present invention.

2 is a schematic view of an embodiment of the present invention.

3 is a schematic diagram of the operation of the first transmission scheme of the present invention.

4 is a schematic diagram of the operation of the second transmission scheme of the present invention.

The specific embodiments are described below to illustrate the embodiments of the invention, but are not intended to limit the scope of the invention.

Please refer to FIG. 1 , which is a schematic diagram of an application environment of an email transmission system 1 according to the present invention. The aforementioned electronic mail transmission system 1 includes an electronic mail transmission device 11 and a use terminal device 12. The aforementioned email transmission device 11 is a computer server for transmitting and receiving emails, and the aforementioned user terminal device 12 can be an electronic device (for example, a computer, a smart phone, etc.) having an e-mail function. A computer program product for regulating the transmission of e-mail in the network is installed on the e-mail transmission device 11.

The end device 12 is electrically connected to the e-mail transmission device 11. The email transmission device 11 is connected to the regulatory network server 30 located at the regulatory network 3 via a first transmission channel 21 formed by one or more routing nodes 2 (first routing node and second routing node). The control network server 30 is electrically connected to the receiving server 31, and the receiving server 31 is electrically connected to the receiving device 32. In another transmission mode, the email transmission device 11 is directly connected to the destination server 31 or the destination device 32 via a second transmission channel 22 formed by one or more routing nodes 2 (third routing nodes).

In one embodiment, the e-mail transmission device 11 that installs the aforementioned computer program product determines that part or all of the transmission path of the e-mail is located in the control network 3, and then divides the e-mail into a plurality of mail files for transmission. In addition to checking the receiving end (the receiving end server 31 or the receiving end device 32), the e-mail transmitting device 11 can also determine that it is located in the regulatory network 3, and divide the e-mail into a plurality of mail files respectively. Transfer.

In addition to checking if the recipient is located on the control network 3, the aforementioned computer program Products can also check whether the email content has a specific keyword according to the form of the individual control network 3, and divide the email with the controlled keyword into a mail file, so that there is no control key in the single mail file. word.

The aforementioned computer program product further divides the mail file that has not been successfully transmitted (for example, returned or intercepted) into a plurality of sub-mail files for transmission. Further, the foregoing splitting operation divides the mail file into a single sub-mail file and does not have a regulatory keyword.

In addition, if the computer program product fails to be successfully transmitted, the computer program product is replaced with a transmission channel that has not been subjected to regulatory inspection to resend the original unsuccessful mail file.

In contrast, the computer program product of the present case further receives and merges the mail file generated by the foregoing splitting operation to restore the email.

In another embodiment, the present invention further provides an e-mail transmission method for regulating network transmission of e-mail, which is to determine that part or all of the transmission path of the e-mail is located in the regulatory network, and then divide the e-mail into A plurality of mail files are separately transmitted.

The foregoing method further determines that the email transmission device 11 that executes the email transmission method is located on the regulatory network 3, and divides the email into a mail archive for transmission. Further, the splitting operation divides the email with the regulatory keyword into a mail file so that there is no regulatory keyword in the single mail file.

In addition, the foregoing method further divides the mail file that has not been successfully transmitted into a plurality of sub-mail files for transmission, and divides the mail file into a single sub-mail file without a regulatory keyword.

In addition, if the above method is not successfully transmitted, the mail file is replaced with a transmission channel that has not been subjected to the regulatory check to resend the mail file that was originally unsuccessful.

The foregoing method can further receive and merge the mail file generated by the foregoing splitting operation to restore the email.

Referring to FIG. 1 and FIG. 2 together, when the e-mail transmission device 11 executes the foregoing computer program product, and receives the first transmission channel 21 formed by the user terminal device 12 via the first routing node and the second routing node, At 13 o'clock, the computer program product will parse the recipient's e-mail address and determine that part or all of the transmission path of the e-mail 13 is located on the control network 3. The email 13 is divided into a plurality of mail files 131 for transmission.

As described in the email 13 of Table 1, the email transmission device 11 can analyze whether the part or all of the transmission path of the email 13 is located in the control network through the following resolution scheme when receiving the email 13 as shown in Table 1. Road 3:

The first resolution solution: directly query the list of the control network to know whether the email address of the email 13 is located in the control network 3.

The second resolution solution is: querying the IP address of the receiving server 31 through the DNS host, and querying the list of the control network to know whether the IP address of the receiving server 31 is located in the control network 3.

The third analysis solution is: through the network transmission path analysis program, for example, the network command "tracert" to know the IP addresses of the transmission nodes that the receiving server 31 passes, to determine whether part or all of the transmission path is located in the control network. Road 3 inside.

Please refer to FIG. 3, and when it is determined that the receiving server 31 is located in the regulatory network 3, the email transmission device 11 can divide the email 13 into a plurality of email files 131 (for example, a multi-purpose internet network). The mail file 131 of the Multipurpose Internet Mail Extensions (MIME) file format is transmitted.

For example, the content of the email 13 of Table 1 can be divided into N (N=3 in this case) mail file 131 (first mail file 131~third mail file 131), each mail file 131 Both are accompanied by the header of the recipient (Header)

When "Changjiang No. 1" is included in the control keywords inside the Control Network 3, When the e-mail transmission device of the well-known e-mail transmits the e-mail, the entire e-mail is returned, and when the e-mail file is large (carrying attachment files), the continuous re-delivery will consume a large amount of operating resources and Transmission bandwidth. Compared with the lack of the prior art, only the third mail file 131 will be returned after the first transmission of the email 13 of the case, so only the third mail file 131 needs to be processed, and the other mail file 131 (first The mail file 131, the second mail file 131, and the fourth mail file 131) are not required to be resent.

When the e-mail transmission device 11 knows that the third mail file 131 has not been successfully transmitted, the following two transmission schemes may be used for retransmission:

The first transmission scheme: at this time, the email transmission device 11 divides the third email archive 131 into a plurality of sub-mail archives 132, and causes the single sub-mail archive 132 to have no regulatory keywords, as illustrated in Table 3. The third mail file 131 can be further cut into N child mail files 132. In order to prevent the single child mail file 132 from appearing in the text, each child mail file 132 has only a single character.

The second transmission scheme: Referring to FIG. 4, the e-mail transmission device 11 can also switch the transmission channel, and the third mail file 131 can be passed to the second transmission channel 22 (for example, the rate) that is not required to be checked by the control network 3. More expensive private enterprise telecom transmission channels, satellite communication transmission channels, etc.) for transmission.

After receiving the segmented mail file 131, the destination server 31 and the email transmission device 11 may reorganize according to the number of the mail file 131 to restore the original electronic file.

In another embodiment, in order to save the working time, the email transmission device 11 of the present invention can check the type of the email address before the transmission, and query the regulatory keyword classification table as shown in Table 4 to extract the corresponding control key. Word database to check whether the text has control Keyword and split the content of the control keyword.

For example, when the email 13 as shown in Table 5 needs to be transmitted, if the email transmission device 11 queries the recipient's email address, the receiving destination server 31 is the bank, and then the email transmission device 11 The "Funding Keyword Database" will be accessed to check whether the keyword contains keywords related to the capital (for example, ID card number, birthday, name, address), so the email transmission device 11 divides the mail file 131. The content of the keyword may be marked first, and the content part of the keyword is separately divided into sub-mail files having only a single character, and the divided mail file 131 is as shown in Table 6:

Since the email body having the keyword has been divided into a plurality of mail files 131 or sub-mail files 132 and transmitted separately, when the control network server 30 checks When checking the texts of the individual mail files, the keywords that need to be controlled cannot be found, so the mail file 131 or the sub-mail file 132 is released. After using the computer program product or method of the case, the electronic mail can be effectively reduced. The problem of intercepting or returning letters.

The aforementioned computer program products can be implemented by ASP, C/C++/C#, Java, Python, PHP, Perl, etc., but the category of the programming language is not limited thereto.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

1‧‧‧Email transmission system

11‧‧‧E-mail transmission device

12‧‧‧Using the end device

2‧‧‧ routing node

21‧‧‧First transmission channel

22‧‧‧Second transmission channel

3‧‧‧Control Network

30‧‧‧Control network server

31‧‧‧Receiver Servo

32‧‧‧ Receiving device

Claims (8)

A computer program product for controlling the transmission of e-mail on a network, and when the computer is loaded into the computer program product and executed, the following steps may be completed: determining that part or all of the transmission path of the e-mail is located in the control network, The email with the regulatory keyword is divided into a plurality of email files for transmission, so that the single keyword does not have the regulatory keyword. If the computer program product described in claim 1 or the electronic mail transmission device for executing the computer program product is located on the regulatory network, the email is divided into the mail files for transmission. The computer program product described in claim 1 or 2 further divides the mail file that has not been successfully transmitted into a plurality of sub-mail files for transmission. The computer program product of claim 1 or 2 further receives and merges the mail files to restore the email. An e-mail transmission method for regulating network transmission of e-mails includes: determining that part or all of the transmission path of the e-mail is located in the control network, and dividing the e-mail having the control keyword into a plurality of mail files respectively The transfer is made so that the single control keyword does not have the regulatory keyword. The e-mail transmission method according to claim 5, wherein the e-mail transmission device that performs the e-mail transmission method is further located in the regulatory network, divides the e-mail into the mail files for transmission. According to the e-mail transmission method described in claim 5 or 6, the mail file that has not been successfully transmitted is further divided into a plurality of sub-mail files for transmission. The email transmission method according to claim 5 or 6, further receiving and merging the mail archives to restore the email.