CN106713126A - E-mail information unidirectional transmission method and system between intranet and internet - Google Patents
E-mail information unidirectional transmission method and system between intranet and internet Download PDFInfo
- Publication number
- CN106713126A CN106713126A CN201710079899.4A CN201710079899A CN106713126A CN 106713126 A CN106713126 A CN 106713126A CN 201710079899 A CN201710079899 A CN 201710079899A CN 106713126 A CN106713126 A CN 106713126A
- Authority
- CN
- China
- Prior art keywords
- intranet
- mailbox
- outer net
- account
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/42—Mailbox-related aspects, e.g. synchronisation of mailboxes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
Abstract
The invention discloses an E-mail information unidirectional transmission method and system between intranet and internet. The disclosed method comprises the following steps: the step that a mailbox account receives an E-mail: receiving an internet and/or intranet mail by a mailbox server, and storing the received mail in a storage space of the mail account, logging in to a mailbox account to connect to a receiving mailbox server under the intranet, taking out the mail from the storage space by the receiving mailbox server and then sending the mail to the mailbox account, receiving the mail by the mailbox account, and successfully receiving the mail; the step that the mailbox account sends the E-mail: logging in to the mailbox account under the intranet; newly creating a to-be-sent mail or forwarding a to-be-sent mail; judging whether a mail receiving account is an internet mail account, sending the mail to the mailbox server if the mail receiving account is not the internet mail account, and waiting for receiving, namely, successfully sending the mail; otherwise, forbidding outgoing the mail, namely, failed to send the mail. The all in without out network unidirectional transmission of the internet E-mail information is realized, and the intranet E-mail information can be freely sent and received.
Description
Technical field
It is unidirectional the present invention relates to Email Information between technical field of network information safety, more particularly to a kind of intranet and extranet
Transmission method and system.
Background technology
Network security is increasingly serious, and many companies take tertiary-structure network, important service system is in into Intranet, by not
The intranet inside mailbox for carrying out domain name registration carries out information transmission.And the basic data that operation system needs then mainly is led to
The E-mail address for crossing WWW is transmitted, i.e., extranet information is transmitted by the E-mail address of WWW.In Linux platform
On, it is currently that after building mail relaying device, dns server, forwarding by mail is realized.The problem of current scheme is excessively multiple
Miscellaneous, high cost：Need a mail server as the inside mailbox server for not carrying out domain name registration, realize in domain name access
One dns server of portion's mailbox is incited somebody to action as internal dns server, and as the mail relaying device of email relaying server
The mail that mail relaying device is received is forwarded to intranet mailbox account after inquiring about internal dns server.And two sets of intranet and extranet
Independent mailing system mutually, intranet mailbox server does not carry out domain name registration, causes the outer net mailbox cannot direct forwarding by mail
To intranet mailbox.
Therefore how to realize that directly internally mailbox sends Email, and outer net electronics to extranet information by external mailbox
The network uni-directional transmission of e-mail messages only import but no export, Intranet Email Information can be received and dispatched freely, be those skilled in the art
Problem demanding prompt solution.
The content of the invention
The technical problem to be solved in the present invention is the drawbacks described above for overcoming prior art to exist, there is provided between a kind of intranet and extranet
Email Information unidirectional transmission method and system, realize that directly internally mailbox sends electronics to extranet information by external mailbox
Mail, and outer net Email Information only import but no export network uni-directional transmission, Intranet Email Information can receive and dispatch freely.
The present invention provides Email Information unidirectional transmission method, the double netcard of mailbox server equipment between a kind of intranet and extranet
The outer net mailbox server in connection Intranet and outer net, is provided with intranet mailbox server and ten thousand respectively in mailbox server equipment
Dimension net E-mail service；Interior off the net, the outer net or Intranet account logged in terminal are connected by world wide web electronic mail service
Outer net or intranet mailbox server are connected to, methods described includes：
Outer net or intranet mailbox account receive email step：
Step S110：Outer net or intranet mailbox server receive outer net or Intranet mail；
Step S120：The email storage that outer net or intranet mailbox server will be received is to corresponding outer net or intranet mailbox account
Memory space；
Step S130：Interior off the net, outer net or intranet mailbox account are connected to outer net or Intranet by world wide web electronic mail service
The reception mailbox server of mailbox server；
Step S140：Outer net or Intranet receive mailbox server and are taken out from the memory space of corresponding outer net or intranet mailbox account
Mail；
Step S150：Outer net or Intranet receive mailbox server by world wide web electronic mail service by mail be sent to outer net or
Intranet mailbox account；
Step S160：Outer net or intranet mailbox account collect outer net or Intranet mail, receive mail success；
Outer net or intranet mailbox account send email step：
Step S210：Interior off the net, outer net or intranet mailbox account log in outer net or Intranet postal by world wide web electronic mail service
Case server；
Step S220：Newly-built mail to be sent forwards mail pending；
Step S230：Judgement logs in whether email accounts are outer net Malibox Accounts, if intranet mailbox account enters step
S240；If outer net Malibox Account, into step S250；
Step S240：The transmission mailbox server of mail to intranet mailbox server is sent, receiving emails Intranet account waiting is received,
Send mail success；
Step S250：The transmission mailbox server of mail to outer net mailbox server is sent, due to world wide web electronic mail service
The outer net port blocking outgoing of place terminal, sends mail failure.
Preferably, the step S160 is comprised the following steps：
S161：Outer net or intranet mailbox account collect outer net or Intranet mail；
S162：Judge that outer net or intranet mailbox account collect outer net or whether Intranet mail succeeds, step is entered if success
S163, as unsuccessful, mails again into step S161；
S163：Mail successfully.
Preferably, the step S240 is comprised the following steps：
S241：The transmission mailbox server of mail to intranet mailbox server is sent, receiving emails Intranet account waiting is received；
S242：Judge that mail is sent to whether the transmission mailbox server of intranet mailbox server succeeds, step is entered if success
Rapid S243, as unsuccessful, mail is resend into step S241；
S243：Send mail success.
Preferably, the reception mailbox server of the mail server of the outer net and Intranet is IMAP mailbox servers.
Preferably, the mailbox server of the mail server for sending outer net and Intranet is SMTP mailbox servers.
Preferably, also include after the step S120：Step S121：Intranet mailbox server is set up with mail web visitor
The link of family end Rainloop.
Preferably, also include before the step S210：Step S200：Intranet mailbox server is set up with mail web visitor
The link of family end Rainloop.
Preferably, if it is outer net Malibox Account that Malibox Account is logged in the step S230, into step S251：
Rainloop is closed and is preserved function, and mail web client can not preserve mail, subsequently into step S250.
The present invention also provides Email Information unidirectional transmission system between a kind of intranet and extranet, including the client for being installed on terminal
End and the mailbox server equipment of double netcard, the double netcard of mailbox server equipment connect the outer net postal in Intranet and outer net respectively
Case server, the outer net port blocking outgoing of mailbox server equipment, is provided with intranet mailbox service in mailbox server equipment
Device and world wide web electronic mail service：
Client, for providing User Interface, user logs in outer net or intranet mailbox account, outer net or interior by client
Net Malibox Account is connected by world wide web electronic mail service with outer net or Intranet mail server, and postal is received from outer net or Intranet
Mail reception outer net or Intranet mail and/or generation mail are sent to outer net or Intranet and send mailbox server by case server；
Intranet server includes that Intranet receives mailbox server, Intranet and sends mailbox server, interior net storage device, wherein：
Intranet receives mailbox server, for taking out mail from the memory space of corresponding intranet mailbox account, is sent to Intranet
Malibox Account；
Intranet sends mailbox server, for receiving client generation mail；
Intranet storage device, for the memory space of the email storage that will receive to corresponding intranet mailbox account；
Processing unit, for when mail is sent, judgement to log in whether mail account is outer net Malibox Account, if Intranet postal
Case account, is sent to generation mail Intranet and sends mailbox server；If outer net Malibox Account, generation mail is sent to
Outer net sends mailbox server.
Realize that extranet information can directly internally mailbox sends Email by external mailbox, and internal mailbox can not be to
External mailbox sends the network uni-directional transmission of Email, i.e. outer net Email Information only import but no export.Intranet electronics postal simultaneously
Part information can be received and dispatched freely.
Brief description of the drawings
The intranet mailbox account of Email Information unidirectional transmission method between the intranet and extranet that Fig. 1 is provided for the first implementation method
Family receives the flow chart of Email；
The intranet mailbox account hair of Email Information unidirectional transmission method between the intranet and extranet that Fig. 2 is provided for the first implementation method
Send the flow chart of Email；
The intranet mailbox account of Email Information unidirectional transmission method connects between the intranet and extranet that Fig. 3 is provided for second implementation method
Receive the flow chart of Email；
The intranet mailbox account hair of Email Information unidirectional transmission method between the intranet and extranet that Fig. 4 is provided for second implementation method
Send the flow chart of Email；
The intranet mailbox account of Email Information unidirectional transmission method connects between the intranet and extranet that Fig. 5 is provided for the third implementation method
Receive the flow chart of Email；
The intranet mailbox account hair of Email Information unidirectional transmission method between the intranet and extranet that Fig. 6 is provided for the third implementation method
Send the flow chart of Email；
The structured flowchart of Email Information unidirectional transmission system between a kind of intranet and extranet that Fig. 7 is provided for the present invention.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, below in conjunction with the accompanying drawings to the present invention
It is described in further detail.
Referring to Email Information one-way transmission side between the intranet and extranet that Fig. 1 and Fig. 2, Fig. 1 are provided for the first implementation method
The intranet mailbox account of method receives electronics postal between the flow chart of Email, the intranet and extranet that Fig. 2 is provided for the first implementation method
The intranet mailbox account of part information unidirectional transmission method sends the flow chart of Email.
The present invention provides Email Information unidirectional transmission method, the double netcard of mailbox server equipment between a kind of intranet and extranet
The outer net mailbox server in connection Intranet and outer net, is provided with intranet mailbox server and ten thousand respectively in mailbox server equipment
Dimension net E-mail service；Interior off the net, the outer net or Intranet account logged in terminal are connected by world wide web electronic mail service
Outer net or intranet mailbox server are connected to, the terminal can be mobile phone, computer or panel computer etc., and methods described includes：
Outer net or intranet mailbox account receive email step：
Step S110：Outer net or intranet mailbox server receive outer net or Intranet mail；
Step S120：The email storage that outer net or intranet mailbox server will be received is to corresponding outer net or intranet mailbox account
Memory space；
Step S130：Interior off the net, outer net or intranet mailbox account are connected to outer net or Intranet by world wide web electronic mail service
The reception mailbox server of mailbox server；
Step S140：Outer net or Intranet receive mailbox server and are taken out from the memory space of corresponding outer net or intranet mailbox account
Mail；
Step S150：Outer net or Intranet receive mailbox server by world wide web electronic mail service by mail be sent to outer net or
Intranet mailbox account；
Step S160：Outer net or intranet mailbox account collect outer net or Intranet mail, receive mail success；
Outer net or intranet mailbox account send email step：
Step S210：Interior off the net, outer net or intranet mailbox account log in outer net or Intranet postal by world wide web electronic mail service
Case server；
Step S220：Newly-built mail to be sent forwards mail pending；
Step S230：Judgement logs in whether email accounts are outer net Malibox Accounts, if intranet mailbox account enters step
S240；If outer net Malibox Account, into step S250；
Step S240：The transmission mailbox server of mail to intranet mailbox server is sent, receiving emails Intranet account waiting is received,
Send mail success；
Step S250：The transmission mailbox server of mail to outer net mailbox server is sent, due to world wide web electronic mail service
The outer net port blocking outgoing of place terminal, sends mail failure.
When intranet mailbox account receives Email, the email storage that intranet mailbox server will be received is to corresponding interior
The memory space of net email accounts.Interior off the net, user is logged in intranet mailbox account and is connected by world wide web electronic mail service
To the reception mailbox server of intranet mailbox server, Intranet reception storage of the mailbox server from corresponding intranet mailbox account
Mail is taken out in space, and Intranet receives mailbox server and mail is sent into intranet mailbox account by world wide web electronic mail service
Family, intranet mailbox account mails, and receives mail success.When outer net Malibox Account receives Email, outer net mailbox service
Memory space of the email storage that device will be received to corresponding outer net email accounts.Interior off the net, user logs in outer net mailbox account
Family is simultaneously connected to the reception mailbox server of outer net mailbox server by world wide web electronic mail service, and outer net receives mailbox clothes
Business device takes out mail from the memory space of corresponding outer net email accounts, and outer net receives mailbox server and passes through world wide web electronic postal
Mail is sent to outer net Malibox Account by part service, and outer net email accounts mail, and receives mail success.
, it is necessary to it is Intranet account or outer net account to distinguish the mail account for logging in during intranet mailbox account transmission Email
Family.Interior off the net, user logs in intranet mailbox account, and outer net or intranet mailbox account are logged in outer by world wide web electronic mail service
Net or intranet mailbox server, user carry out newly-built mail action to be sent or forward mail action pending.When user has filled in
After the email account of addressee, judgement logs in whether mail account is outer net Malibox Account, if intranet mailbox account, sends
Mail to intranet mailbox server transmission mailbox server, receiving emails Intranet account waiting receives, and sends mail success；If
It is outer net Malibox Account to log in mail account, sends the transmission mailbox server of mail to outer net mailbox server, due to ten thousand dimensions
The outer net port blocking outgoing of terminal where net E-mail service, sends mail failure.
Realize that extranet information can directly internally mailbox sends Email by external mailbox, and internal mailbox can not be to
External mailbox sends the network uni-directional transmission of Email, i.e. outer net Email Information only import but no export.Intranet electronics postal simultaneously
Part information can be received and dispatched freely.
Referring to Fig. 3, Email Information unidirectional transmission method is interior between the intranet and extranet that Fig. 3 is provided for second implementation method
Net Malibox Account receives the flow chart of Email.
The intranet mailbox account of Email Information unidirectional transmission method connects between second intranet and extranet of implementation method offer
The Intranet of Email Information unidirectional transmission method between the intranet and extranet that the step of receiving Email and the first implementation method are provided
The step of Malibox Account receives Email, difference is：The step S160 is comprised the following steps：
S161：Outer net or intranet mailbox account collect outer net or Intranet mail；
S162：Judge that outer net or intranet mailbox account collect outer net or whether Intranet mail succeeds, step is entered if success
S163, as unsuccessful, mails again into step S161；
S163：Mail successfully.
Further increase the arrival rate of mail, it is ensured that no matter Intranet or outer net mail can be safe, accurately send
Reach.
Referring to Fig. 5, Email Information unidirectional transmission method is interior between the intranet and extranet that Fig. 5 is provided for the third implementation method
Net Malibox Account receives the flow chart of Email.
The intranet mailbox account of Email Information unidirectional transmission method connects between the intranet and extranet that the third implementation method is provided
The Intranet of Email Information unidirectional transmission method between the step of receiving Email and second intranet and extranet of implementation method offer
The step of Malibox Account receives Email, difference is：The outer net and Intranet receive mailbox server for IMAP mailboxes take
Also include after business device, and the step S120：Step S121：Set up intranet mailbox server and mail web client
The link of Rainloop.
Rainloop is that the mail server system based on WEB is a free PHP Web Mail client increased income
System application tool.Using RainLoop as FTP client FTP application tool, an interface management multiple account number can be used, should
Program possesses the interface of brief introduction and comprehensive function, supports SMTP（Simple Mail Transfer Protocol, i.e., simply
Mail transfer protocol）+IMAP（Internet Message Access Protocol, i.e. Internet Message Access Protocol）Association
View, is the preferable program of personal Mail Clients.
Referring to Fig. 4, Email Information unidirectional transmission method is interior between the intranet and extranet that Fig. 4 is provided for second implementation method
Net Malibox Account sends the flow chart of Email.
The intranet mailbox account hair of Email Information unidirectional transmission method between second intranet and extranet of implementation method offer
The Intranet of Email Information unidirectional transmission method between the intranet and extranet that the step of sending Email and the first implementation method are provided
The step of Malibox Account sends Email, difference is：The step S240 is comprised the following steps：
S241：The transmission mailbox server of mail to intranet mailbox server is sent, receiving emails Intranet account waiting is received；
S242：Judge that mail is sent to whether the transmission mailbox server of intranet mailbox server succeeds, step is entered if success
Rapid S243, as unsuccessful, mail is resend into step S241；
S243：Send mail success.
Further increase send mail success rate, it is ensured that no matter Intranet mail can be safe, accurately send.
The Intranet postal of Email Information unidirectional transmission method between the intranet and extranet that Fig. 6, Fig. 6 are provided for the third implementation method
Case account sends the flow chart of Email.
The intranet mailbox account hair of Email Information unidirectional transmission method between the intranet and extranet that the third implementation method is provided
The Intranet of Email Information unidirectional transmission method between the step of sending Email and second intranet and extranet of implementation method offer
The step of Malibox Account sends Email, difference is：The outer net and Intranet send mailbox server for SMTP mailboxes take
Also include before business device, and the step S210：Step S200：Set up intranet mailbox server and mail web client
The link of Rainloop.
If it is outer net Malibox Account to log in Malibox Account in step S230 described in further scheme, into step
S251：Rainloop is closed and is preserved function, and mail web client can not preserve mail, subsequently into step S250.
RainLoop can be possessed as FTP client FTP application tool with an interface management multiple account number, the program
The interface of brief introduction and comprehensive function, support SMTP+IMAP agreements, are the preferable programs of personal Mail Clients.And webpage postal
Part client Rainloop detect the mailbox of User logs in for WWW external mailbox account when, would not allow for manually and from
It is dynamic that communications content/annex is saved as into rough draft.
Referring to Fig. 7, the structural frames of Email Information unidirectional transmission system between a kind of intranet and extranet that Fig. 7 is provided for the present invention
Figure.
The client 11 of terminal is installed between a kind of intranet and extranet under Email Information unidirectional transmission system, including Intranet 10
With the mailbox server equipment 20 of double netcard, the double netcard of mailbox server equipment 20 connects in Intranet 10 and outer net 30 respectively
Outer net mailbox server 31, the outer net port blocking outgoing of mailbox server equipment 20, is provided with mailbox server equipment 20
Intranet mailbox server 21 and world wide web electronic mail service 22：
Client 11, for providing User Interface, under Intranet 10, user logs in outer net or intranet mailbox account by client
Family, outer net or intranet mailbox account are by world wide web electronic mail service 22 and outer net mailbox server 31 or Intranet mail service
Device 21 is connected, and receives mailbox server 311 from outer net or Intranet receives mailbox server 211 by mail reception outer net or Intranet postal
Part and/or generation mail send to outer net and send mailbox server 312 or Intranet transmission mailbox server 212；
External network server 31 includes that outer net receives mailbox server 311, outer net and sends mailbox server 312, outer net storage device
313, wherein：
Outer net receives mailbox server 311, for taking out mail from the memory space of corresponding outer net email accounts, is sent to outer
Net Malibox Account；
Outer net sends mailbox server 312, for receiving client generation mail；
Outer net storage device 313, for outer net email storage to the memory space of corresponding outer net email accounts will to be received；
Intranet server 21 includes that Intranet receives mailbox server 211, Intranet and sends mailbox server 212, interior net storage device
213, wherein：
Intranet receives mailbox server 211, for taking out mail from the memory space of corresponding intranet mailbox account, is sent to interior
Net Malibox Account；
Intranet sends mailbox server 212, for receiving client generation mail；
Intranet storage device 213, for the memory space of the Intranet email storage that will receive to corresponding intranet mailbox account；
Processing unit 23, for when mail is sent, judgement to log in whether mail account is outer net Malibox Account, if being interior
Net Malibox Account will generate mail and be sent to Intranet transmission mailbox server 211；If outer net Malibox Account, then postal will be generated
Part is sent to outer net and sends mailbox server 312.
When intranet mailbox account receives Email, the email storage that intranet mailbox server will be received is to corresponding interior
The memory space of net email accounts.Interior off the net, user is logged in intranet mailbox account and is connected by world wide web electronic mail service
To the reception mailbox server of intranet mailbox server, Intranet reception storage of the mailbox server from corresponding intranet mailbox account
Mail is taken out in space, and Intranet receives mailbox server and mail is sent into intranet mailbox account by world wide web electronic mail service
Family, intranet mailbox account mails, and receives mail success.When outer net Malibox Account receives Email, outer net mailbox service
Memory space of the email storage that device will be received to corresponding outer net email accounts.Interior off the net, user logs in outer net mailbox account
Family is simultaneously connected to the reception mailbox server of outer net mailbox server by world wide web electronic mail service, and outer net receives mailbox clothes
Business device takes out mail from the memory space of corresponding outer net email accounts, and outer net receives mailbox server and passes through world wide web electronic postal
Mail is sent to outer net Malibox Account by part service, and outer net email accounts mail, and receives mail success.
, it is necessary to it is Intranet account or outer net account to distinguish the mail account for logging in during intranet mailbox account transmission Email
Family.Interior off the net, user logs in intranet mailbox account, and outer net or intranet mailbox account are logged in outer by world wide web electronic mail service
Net or intranet mailbox server, user carry out newly-built mail action to be sent or forward mail action pending.When user has filled in
After the email account of addressee, judgement logs in whether mail account is outer net Malibox Account, if intranet mailbox account, sends
Mail to intranet mailbox server transmission mailbox server, receiving emails Intranet account waiting receives, and sends mail success；If
It is outer net Malibox Account to log in mail account, sends the transmission mailbox server of mail to outer net mailbox server, due to ten thousand dimensions
The outer net port blocking outgoing of terminal where net E-mail service, sends mail failure.
Realize that extranet information can directly internally mailbox sends Email by external mailbox, and internal mailbox can not be to
External mailbox sends the network uni-directional transmission of Email, i.e. outer net Email Information only import but no export.Intranet electronics postal simultaneously
Part information can be received and dispatched freely.
Email Information unidirectional transmission method and system between a kind of intranet and extranet provided by the present invention are carried out above
It is discussed in detail.Specific case used herein is set forth to principle of the invention and implementation method, above example
Illustrate that being only intended to help understands core concept of the invention.It should be pointed out that coming for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improve and modify
Also fall into the protection domain of the claims in the present invention.
Claims (9)
1. a kind of Email Information unidirectional transmission method between intranet and extranet, it is characterised in that the double netcard of mailbox server equipment
The outer net mailbox server in connection Intranet and outer net, is provided with intranet mailbox server and ten thousand respectively in mailbox server equipment
Dimension net E-mail service；Interior off the net, the outer net or Intranet account logged in terminal are connected by world wide web electronic mail service
Outer net or intranet mailbox server are connected to, methods described includes：
Outer net or intranet mailbox account receive email step：
Step S110：Outer net or intranet mailbox server receive outer net or Intranet mail；
Step S120：The email storage that outer net or intranet mailbox server will be received is to corresponding outer net or intranet mailbox account
Memory space；
Step S130：Interior off the net, outer net or intranet mailbox account are connected to outer net or Intranet by world wide web electronic mail service
The reception mailbox server of mailbox server；
Step S140：Outer net or Intranet receive mailbox server and are taken out from the memory space of corresponding outer net or intranet mailbox account
Mail；
Step S150：Outer net or Intranet receive mailbox server by world wide web electronic mail service by mail be sent to outer net or
Intranet mailbox account；
Step S160：Outer net or intranet mailbox account collect outer net or Intranet mail, receive mail success；
Outer net or intranet mailbox account send email step：
Step S210：Interior off the net, outer net or intranet mailbox account log in outer net or Intranet postal by world wide web electronic mail service
Case server；
Step S220：Newly-built mail to be sent forwards mail pending；
Step S230：Judgement logs in whether email accounts are outer net Malibox Accounts, if intranet mailbox account enters step
S240；If outer net Malibox Account, into step S250；
Step S240：The transmission mailbox server of mail to intranet mailbox server is sent, receiving emails Intranet account waiting is received,
Send mail success；
Step S250：The transmission mailbox server of mail to outer net mailbox server is sent, due to world wide web electronic mail service
The outer net port blocking outgoing of place terminal, sends mail failure.
2. Email Information unidirectional transmission method between intranet and extranet according to claim 1, it is characterised in that the step
S160 is comprised the following steps：
S161：Outer net or intranet mailbox account collect outer net or Intranet mail；
S162：Judge that outer net or intranet mailbox account collect outer net or whether Intranet mail succeeds, step is entered if success
S163, as unsuccessful, mails again into step S161；
S163：Mail successfully.
3. Email Information unidirectional transmission method between intranet and extranet according to claim 2, it is characterised in that the step
S240 is comprised the following steps：
S241：The transmission mailbox server of mail to intranet mailbox server is sent, receiving emails Intranet account waiting is received；
S242：Judge that mail is sent to whether the transmission mailbox server of intranet mailbox server succeeds, step is entered if success
Rapid S243, as unsuccessful, mail is resend into step S241；
S243：Send mail success.
4. Email Information unidirectional transmission method between the intranet and extranet of any one according to claims 1 to 3, its feature exists
In the reception mailbox server of the mail server of the outer net and Intranet is IMAP mailbox servers.
5. Email Information unidirectional transmission method between intranet and extranet according to claim 4, it is characterised in that the transmission
The mailbox server of the mail server of outer net and Intranet is SMTP mailbox servers.
6. Email Information unidirectional transmission method between intranet and extranet according to claim 5, it is characterised in that the step
Also include after S120：Step S121：Set up linking for intranet mailbox server and mail web client Rainloop.
7. Email Information unidirectional transmission method between intranet and extranet according to claim 6, it is characterised in that the step
Also include before S210：Step S200：Set up linking for intranet mailbox server and mail web client Rainloop.
8. Email Information unidirectional transmission method between intranet and extranet according to claim 7, it is characterised in that the step
If it is outer net Malibox Account that Malibox Account is logged in S230, into step S251：Rainloop is closed and is preserved function, mail web
Client can not preserve mail, subsequently into step S250.
9. Email Information unidirectional transmission system between a kind of intranet and extranet, it is characterised in that including the interior terminal that is installed on off the net
The mailbox server equipment of client and double netcard, the double netcard of mailbox server equipment connects outer in Intranet and outer net respectively
Net mailbox server, the outer net port blocking outgoing of mailbox server equipment, intranet mailbox is provided with mailbox server equipment
Server and world wide web electronic mail service：
Client, for providing User Interface, interior user off the net logs in outer net or intranet mailbox account by client, outward
Net or intranet mailbox account are connected by world wide web electronic mail service with outer net mailbox server or Intranet mail server, from
Outer net or Intranet receive mailbox server and send to outer net or Intranet mail reception outer net or Intranet mail and/or generation mail
Send mailbox server；
Intranet server includes that Intranet receives mailbox server, Intranet and sends mailbox server, interior net storage device, wherein：
Intranet receives mailbox server, for taking out mail from the memory space of corresponding intranet mailbox account, is sent to Intranet
Malibox Account；
Intranet sends mailbox server, for receiving client generation mail；
Intranet storage device, for the memory space of the email storage that will receive to corresponding intranet mailbox account；
Processing unit, for when mail is sent, judgement to log in whether mail account is outer net Malibox Account, if Intranet postal
Case account, is sent to generation mail Intranet and sends mailbox server；If outer net Malibox Account, then generation mail is sent
Mailbox server is sent to outer net.
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| CN201710079899.4A CN106713126B (en) | 2017-02-15 | 2017-02-15 | Method and system for one-way transmission of e-mail information between internal network and external network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710079899.4A CN106713126B (en) | 2017-02-15 | 2017-02-15 | Method and system for one-way transmission of e-mail information between internal network and external network |
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| CN106713126A true CN106713126A (en) | 2017-05-24 |
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