JP2002051071A - Electronic mail automatic transfer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic mail automatic transfer system that can confirm whether or not setting of a mail transfer destination is correct, decrease number of unnecessary error notice mails, and prevent the same mail from being repetitively transmitted between servers. SOLUTION: A confirmation mail sent from a confirmation mail transmission means 10a is transferred to a transfer destination set by an in-company mail server 10 in the case of setting the transfer destination. When a confirmation mail transfer confirmation means 10b discriminates that the confirmation mail is normally transferred, the setting of the transfer destination is discriminated correct. Whereas, when the confirmation mail transfer confirmation means 10b discriminates that the confirmation mail is not normally transferred, a transfer destination setting release means 10c releases the setting of the transfer destination. Furthermore, when the in-company mail server 10 automatically transfers a mail and a transfer error confirmation means 10d discriminates that the transfer to the transfer destination is in error, the transfer destination setting release means 10c releases the setting of the transfer destination.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic mail automatic transfer system for automatically transferring an electronic mail sent to a specific mail address to another mail address.

[0002]

2. Description of the Related Art In a conventional in-house e-mail system, a barrier is often provided for external access in order to ensure security. On the other hand, with the spread of portable information terminals and notebook personal computers, there is an increasing demand to access an in-house mail server on the go.

[0003] With the spread of mobile phones capable of sending and receiving e-mails, the behavior of knowing the arrival of e-mail addressed to oneself inside and outside the company using a mobile phone, and viewing e-mail on a mobile phone has also become common. Have been doing.

Therefore, conventionally, a transfer setting file including a transfer destination address and the like is created on a mail server inside and outside the company, and an e-mail sent to a specific mail address is automatically transferred to the transfer destination address. There is an automatic e-mail transfer system. The electronic mail automatic transfer system deletes the transfer setting file when the transfer setting becomes unnecessary.

[0005]

However, the electronic mail automatic transfer system has a problem that the correct setting of the transfer destination cannot be confirmed unless the mail is actually transferred.

[0006] Even if the transfer destination is set correctly,
If the mail overflows with the capacity of the mailbox of the destination mail server, the original (sender)
There is a problem that an error notification e-mail is sent to the e-mail sender. Also, in the mail receiving system of the mobile phone, there is a problem that an error notification mail is transmitted to the original mail sender due to a failure such as being out of service area or being in a power-off state for a certain period of time.

Further, if the automatic mail transfer setting is made to the mail server of the transfer destination in the mail server of the transfer destination, the mail will reciprocate repeatedly between the servers.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic electronic mail transfer system capable of confirming whether a mail transfer setting is correct, reducing unnecessary error notification mails, and preventing the same mail from repeatedly reciprocating between servers. Is to provide.

[0009]

To achieve the above object, an automatic electronic mail transfer system according to the present invention is directed to an automatic electronic mail transfer system for automatically transferring electronic mail arriving at a mail server to a set transfer destination. When setting the transfer destination, a confirmation mail transmitting means for transmitting a confirmation mail to the mail server which is the transfer source so that the confirmation mail is transferred to the set transfer destination, and the confirmation mail transmitted by the confirmation mail transmission means If the confirmation mail transfer confirmation means for confirming whether or not the confirmation mail has been normally transferred by the transfer source mail server and the confirmation mail transfer confirmation means determines that the confirmation mail has not been normally transferred,
A transfer destination setting canceling means for canceling the setting of the transfer destination of the mail server of the transfer source is provided.

According to the electronic mail automatic transfer system having the above configuration, when the transfer destination is set, the confirmation mail is transmitted to the transfer source mail server by the confirmation mail transmission means to the mail address where the transfer destination is set. Then, the transfer source mail server forwards the confirmation mail to the set transfer destination, and the transfer destination mail server receiving the confirmation mail transmits the arrival mail notifying of the arrival to the confirmation mail. The message is sent to the above-mentioned transfer source mail server. Based on the arriving mail returned from the transfer destination mail server, the confirmation mail transfer confirmation means checks whether the confirmation mail has been normally transferred by the transfer source mail server. The wrong destination setting is released by the destination setting releasing means. Therefore, it is possible to confirm whether or not the setting of the transfer destination is correct by the confirmation mail, and cancel the setting of the incorrect transfer destination. Note that the functions of the above-described confirmation mail transmission unit, confirmation mail transfer confirmation unit, and transfer destination setting release unit may be incorporated in the transfer source mail server, or may be added to another terminal device connected to the transfer source mail server. May be provided.

In one embodiment, the electronic mail automatic transfer system further comprises a transfer error checking means for checking whether the transfer to the set transfer destination has an error when the transfer source mail server automatically transfers the mail. Wherein the transfer destination setting canceling means cancels the setting of the transfer destination of the transfer source mail server when the transfer error confirming means determines that the transfer to the transfer destination is an error. I have.

According to the electronic mail automatic transfer system of the embodiment, when the transfer source mail server automatically transfers the mail, the transfer error confirming means transmits the mail to the transfer destination by an error notification mail from the transfer destination mail server. When it is determined that the transfer is an error, the transfer destination setting release means releases the transfer destination setting of the transfer source mail server. Therefore, unnecessary error notification mails can be reduced.

[0013] Also, the electronic mail automatic transfer system according to the present invention is an electronic mail automatic transfer system for automatically transferring an electronic mail arriving at a mail server to a set transfer destination. When the transfer destination is set, a confirmation mail transmitting unit that transmits a confirmation mail to the mail server that is the transfer source so that the confirmation mail is transmitted to the set transfer destination; and the confirmation mail transmitted by the confirmation mail transmission unit. If the confirmation mail transfer confirming means for confirming whether the mail has been normally transferred by the transfer source mail server and the confirmation mail transfer confirmation means determines that the confirmation mail is not transferred normally, Transfer destination setting canceling means for canceling the setting of the transfer destination of the transfer source mail server.

According to the electronic mail automatic transfer system having the above configuration, the confirmation mail transmitting means of the terminal device receiving the mail service of the mail server of the transfer source sets the mail address to which the transfer destination is set when the transfer destination is set. The confirmation mail is transmitted to the transfer source mail server. Then, the transfer source mail server forwards the confirmation mail to the set transfer destination, and the transfer destination mail server receiving the confirmation mail transmits the arrival mail notifying of the arrival to the confirmation mail. Send to the forwarding mail server. Based on the arrival mail returned from the transfer destination mail server, the confirmation mail transfer confirmation means of the terminal device confirms whether the confirmation mail has been normally transferred by the transfer source mail server. If not, the wrong transfer destination setting of the transfer source mail server is released by the transfer destination setting release means of the terminal device. Therefore, it is possible to confirm whether the setting of the transfer destination is correct, and to cancel the setting of the wrong transfer destination.

In one embodiment of the present invention, in the electronic mail automatic transfer system, the terminal device determines whether the transfer to the set transfer destination is an error when the transfer source mail server automatically transfers the mail. The transfer destination setting canceling means cancels the transfer destination setting of the transfer source mail server when the transfer error checking means determines that the transfer to the transfer destination is an error. It is characterized by doing.

According to the electronic mail automatic transfer system of the embodiment, when the mail server of the transfer source automatically transfers the mail, the transfer error confirmation means of the terminal device receives the error notification mail from the mail server of the transfer destination. When it is determined that the transfer to the transfer destination is an error, the transfer destination setting release means releases the transfer destination setting of the transfer source mail server. Therefore, unnecessary error notification mails can be reduced.

Further, in the electronic mail automatic transfer system according to one embodiment, the confirmation mail transfer confirming means may include an RFC (R)
equest for Comments) 1521 "R
etrn-Receive-To "field and Message-ID defined in RFC822
, And confirms whether or not the confirmation mail has been normally transferred.

According to the electronic mail automatic transfer system of the embodiment, the mail transfer confirmation means for confirmation is a MIM
RFC of E (Multipurpose Internet Mail Extensions)
"Return-Rece" specified in 1521
Based on the “ip-To” field and the Message-ID defined in RFC822, it is confirmed whether the above-mentioned confirmation mail has been normally transferred to the transfer destination by the above-mentioned transfer source mail server. The transfer operation of the server can be easily and reliably confirmed.

In one embodiment of the present invention, in the automatic e-mail transfer system, the confirmation e-mail transmitting means periodically transmits the confirmation e-mail to a transfer destination, and the transfer error confirmation means transmits the confirmation e-mail to the confirmation e-mail. On the other hand, when an error notification mail is sent from the transfer destination mail server, the error notification mail is decrypted to check whether the transfer to the transfer destination is an error.

According to the automatic e-mail transfer system of the embodiment, the confirmation e-mail periodically transmitted to the transfer destination by the confirmation e-mail transmission means is transferred to the transfer destination set by the transfer source mail server. Then, an error notification mail may be transmitted from the transfer destination mail server or the like due to an overcapacity of the transfer destination mail server or a communication failure. The error notification mail is decrypted by the transfer error confirming means to confirm whether the transfer to the transfer destination is an error. Therefore, it is possible to periodically check whether the confirmation mail is normally transferred to the transfer destination by the transfer source mail server.

Further, in the electronic mail automatic transfer system according to one embodiment, the transfer source mail server is set as the transfer destination in the transfer destination mail server.
The same mail detecting means for detecting that the same mail repeatedly goes back and forth between the mail server of the transfer source and the mail server of the transfer destination is provided. When the reciprocating movement between the transfer source mail server and the transfer destination mail server is detected, the setting of the transfer destination of the transfer source mail server is released.

According to the electronic mail automatic transfer system of the embodiment, if the transfer source mail server is set as the transfer destination in the transfer destination mail server, the same mail repeatedly reciprocates between the servers. Therefore, the reciprocation of the same mail between the servers is detected by the same mail detecting means, and the transfer destination setting of the transfer source mail server is released by the transfer destination setting releasing means. Therefore, it is possible to prevent the same mail from reciprocating between the servers indefinitely, and to prevent the same mail from being stored in the mail server indefinitely.

In the electronic mail automatic transfer system according to one embodiment, the same mail detecting means determines whether or not the same mail is the same as the Message-Message defined in RFC822.
It is characterized by using an ID.

According to the electronic mail automatic transfer system of the above embodiment, the same mail detecting means is the MIME R
This is a Message-ID defined by FC822 and differs in content for each mail other than the same mail.
Since the same mail is determined using the sage-ID,
The same mail can be easily and reliably detected.

In one embodiment of the invention, the same e-mail detecting means is a message.
-In the case of a mail in which the ID is not described in the header, the same mail is determined by comparing the header and the body of the mail with the header and the body of the previously received mail.

According to the electronic mail automatic transfer system of the above embodiment, whether or not the mail is the same can be detected by comparing the header and the body of the mail with the header and the body of the previously received mail. That is, if the contents of the header and the body of the two mails match, it can be determined that the mails are the same.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic mail automatic transfer system according to the present invention will be described in detail with reference to the illustrated embodiments.

(First Embodiment) FIG. 1 shows a configuration diagram of an electronic mail automatic transfer system according to an embodiment of the present invention. In FIG. 1, reference numeral 10 denotes an in-house mail server as a transfer-source mail server equipped with a UNIX (registered trademark) operating system, and 11 denotes an in-house mail server.
0 is a transfer setting file in which a transfer destination address is set. This transfer setting file 11 is usually
In the IX operating system, "forw
ard ". Also, 1
Reference numeral 2 denotes a transfer destination mail server outside the company, 101 denotes a public network, the transfer destination mail server 12 is connected to the network 101, and the network 101 and the internal mail server 10 are connected via a security barrier. ing. In addition, the in-house mail server 10
Comprises a confirmation mail transmission unit 10a, a confirmation mail transfer confirmation unit 10b, a transfer destination setting release unit 10c, and a transfer error confirmation unit 10d. The mail delivered to the in-house mail server 10 is transferred to the transfer setting file 11
Is re-distributed to the transfer destination mail server 12, which is the server of the transfer destination address described in.

In the electronic mail automatic transfer system having the above configuration, when a transfer destination is set in the in-house mail server 10, the check mail is transmitted to the in-house mail server 10 by the check mail transmitting means 10a of the in-house mail server 10. Send to the e-mail address you set. Then, the in-house mail server 10 performs a transfer process of transmitting a confirmation mail to the transfer destination mail server 12, which is the mail server at the transfer destination address. Upon receiving the confirmation mail, the transfer destination mail server 12 sends the arrival mail notifying the arrival of the confirmation mail to the in-house mail server 10.
Send to Thereafter, the confirmation mail transfer confirmation means 10b of the in-house mail server 10 decodes the information of the arriving mail returned from the transfer destination mail server 12, and confirms that the confirmation mail has been normally transferred, that is, forwards the mail normally. While confirming that the setting has been made, the confirmation mail transfer confirming means 10b confirms that the confirmation mail has not been normally transferred. That is, if the transfer destination setting is incorrect, the internal mail server The set transfer destination is canceled by the transfer destination setting canceling means 10c.

Next, during the automatic transfer process of the in-house mail server 10, when the transfer error confirming means 10d determines that the transfer to the transfer destination is an error by the error notification mail from the transfer destination mail server 12, the transfer destination setting is performed. Release means 10
The setting of the transfer destination of the in-house mail server 10 is canceled by c.

As described above, in the in-house mail server 10, the confirmation mail transmission means 10a and the confirmation mail transfer confirmation means 10b can confirm whether or not the transfer destination setting is correct, and the transfer destination setting release means 10c can confirm whether the transfer destination setting is correct. The setting of the transfer destination can be canceled, and unnecessary error notification mails can be reduced.

(Second Embodiment) FIG. 2 is a configuration diagram of an electronic mail automatic transfer system according to a second embodiment of the present invention.
However, in the electronic mail automatic transfer system, the mail terminal 13 as the terminal device performs the transfer setting confirmation processing performed by the in-house mail server 10 in the first embodiment. The e-mail terminal 13 includes a confirmation e-mail transmission unit 13.
a, confirmation mail transfer confirmation means 13b, transfer destination setting release means 13c, and transfer error confirmation means 13d.

The electronic mail automatic transfer system having the above configuration transmits a confirmation mail from the confirmation mail transmitting means 13a of the mail terminal 13 to the in-house mail server 10 when the transfer destination is set, and sets the transfer from the in-house mail server 10. The transfer is made to the transfer destination mail server 12, which is the mail server at the destination address. Next, the transfer destination mail server 12 transmits an arrival mail notifying the arrival of the confirmation mail to the in-house mail server 10. Then, the confirmation mail transfer confirmation means 13b of the mail terminal 13 decodes the information of the arrival mail from the transfer destination mail server 12 received by the in-house mail server 10, and confirms that the confirmation mail is normally transferred. That is, confirm that the transfer destination is set normally. On the other hand, when the confirmation mail transfer confirmation means 13b of the mail terminal 13 confirms that the forwarded mail is not normally transferred, that is, when the transfer destination setting is incorrect, the transfer destination setting release means 13c of the mail terminal 13 uses Then, the transfer destination set in the in-house mail server 10 is released.

During the automatic transfer process of the in-house mail server 10, the transfer error check means 13d of the mail terminal 13
Determines that the transfer to the transfer destination is an error based on the error notification mail from the transfer destination mail server 12, the transfer destination setting release unit 13c releases the transfer destination setting of the in-house mail server 10.

As described above, the confirmation mail transmission means 13a and the confirmation mail transfer confirmation means 13b of the mail terminal 13 can confirm whether or not the transfer destination set in the in-house mail server 10 is correct. 1
With 3c, the setting of the wrong transfer destination of the in-house mail server 10 can be released. Further, by detecting a transfer error to the transfer destination by the transfer error confirming means 13d and canceling the setting of the transfer destination by the transfer destination setting canceling means 13c, unnecessary error notification mail can be reduced.

(Third Embodiment) FIG. 3 is a block diagram of an electronic mail automatic transfer system according to a third embodiment of the present invention.
This electronic mail automatic transfer system has the same configuration as the electronic mail automatic transfer system of FIG. 1 of the first embodiment except for the in-house mail server 10, and the same components are denoted by the same reference numerals and will be described. Omitted. The transfer destination (in-house mail server 10) is set in the transfer setting file 14 in the transfer destination mail server 12.

The in-house mail server 10 includes the same mail detection means 10e in addition to the confirmation mail transmission means 10a, the confirmation mail transfer confirmation means 10b, the transfer destination setting release means 10c and the transfer error confirmation means 10d. .

In FIG. 3, the transfer setting files 11, 1
In the case where the setting has been made such that the mail is stored in the mail server 4 and transferred to the other mail server, the mail transmitted to the internal mail server 10 or the mail transmitted to the transfer mail server 12 is transmitted. The mail repeats infinitely between the transfer destination mail server 12 and the in-house mail server 10, and the same mail is stored indefinitely in the mail storage units (not shown) of the mail servers 10, 12. If the transfer setting files 11 and 14 do not store the mail but transfer only to the other server, the mail sent to the in-house mail server 10 or the transfer destination mail server 12 The e-mail sent to the e-mail becomes an eternal loop e-mail that repeats infinitely between the transfer destination e-mail server 12 and the in-house e-mail server 10.

Therefore, in the electronic mail automatic transfer system of the third embodiment, the in-house mail server 10 performs processing for preventing a permanent loop mail. That is, when the in-house mail server 10 is set as the transfer destination in the transfer destination mail server 12, the same mail detection unit 10e detects that the same mail repeatedly goes back and forth between the servers, and the transfer destination setting release unit Since the setting of the transfer destination of the in-house mail server 10 is canceled by 10c, it is possible to prevent the same mail from going infinitely back and forth between the two servers, and it is also possible to prevent the same mail from being transferred to the transfer destination mail server 12. Thus, it is possible to prevent the same mail from being stored in the mail servers 10 and 12 indefinitely.

(Fourth Embodiment) FIG. 4 is a block diagram of an electronic mail automatic transfer system according to a fourth embodiment of the present invention.
This automatic e-mail transfer system is the same as the automatic e-mail transfer system of FIG. 2 of the second embodiment except that the transfer destination mail server 12 is set to transfer to the in-house mail server 10 and the mail terminal 13 is set. It has a configuration,
The same components are denoted by the same reference numerals and description thereof is omitted.

In the electronic mail automatic transfer system, the mail terminal 13 as a terminal device is provided in addition to the confirmation mail transmission means 13a, the confirmation mail transfer confirmation means 13b, the transfer destination setting release means 13c, and the transfer error confirmation means 13d. ,
The same mail detecting means 13e is provided.

FIG. 5 is a flowchart showing the operation of the transfer setting confirmation processing of the mail terminal 13 described above.
The operation of the process of confirming the setting of the transfer destination of the mail terminal 13 will be described.

First, in FIG. 5, in step S10, the user logs in to the in-house mail server 10 from the TELNET port. Here, TELNET is a TCP / IP server
(Mail server) is a virtual terminal protocol that can be remotely controlled from a mail terminal.

Next, it is checked in step S11 whether a transfer setting file exists. In the case of the UNIX operating system, "fo" is usually stored in the user directory.
rward "file. If there is no transfer setting file in step S11, the confirmation process is unnecessary and impossible, and the confirmation process ends.

Next, if a transfer setting file exists in step S11, the transfer setting file is read in step S12.

Next, in step S13, it is confirmed whether or not a transfer destination address exists.

If the transfer destination address does not exist in step S13, the confirmation processing is unnecessary and impossible, and the confirmation processing is terminated.

On the other hand, if the transfer destination address exists in step S13, the process proceeds to step S14, where this transfer destination address is set as the destination, and "Return-Receive" is added to the header.
A confirmation e-mail in which “ip-To: <in-house e-mail address>” is described is transmitted to the in-house e-mail server 10. At this time, the “Message-ID” of the confirmation mail is stored and prepared for collation with the reply mail.

When these processes are completed, in step S15, the arrival of the mail is polled and the mail is received.

Next, the "Subject" and "From" fields of the mail received in step S16 are analyzed to determine whether or not the reply mail corresponds to "Return-Receive-To". If it is not a reply mail in step S16, the process returns to step S15 to receive and analyze the next mail.

On the other hand, if it is a reply mail in step S16, the process proceeds to step S17, where "Me" described in the text is read.
“sage-ID” is extracted.

Then, it is compared with the "Message-ID" stored earlier in step S18, and if it is the same, the process ends with confirmation OK.

In FIG. 4, if the transfer destination mail server 12 is also set to transfer to the in-house mail server 10, the mail sent to the in-house mail server 10 or the outgoing mail to the transfer destination mail server 12 is sent. The e-mail repeatedly travels endlessly between the transfer destination mail server 12 and the in-house mail server 10 like a ping-pong.

Therefore, in the electronic mail automatic transfer system of the fourth embodiment, the mail terminal 13 performs a process that does not repeat the round-trip indefinitely.

First, in FIG. 6, in step S20, POP3 (Pos) of the in-house mail server 10 is sent from the mail terminal 13.
t Log in to the port of Office Protocol Version 3).

Next, if there is a mail in step S21, the flow advances to step S22 to read one mail.
At this time, this mail is not deleted from the in-house mail server 10.

Next, "Message-ID" is extracted from the header of the mail read in step S23, and all "Message-ID" stored in the Message-ID storage unit (not shown) are extracted in step S24. Compare.

Then, in step S24, the same "Mes"
If there is no "sage-ID", the process proceeds to step S25, and the "Message-ID" of the mail read in step S22 is replaced with the "Message-ID".
It adds to a storage part, and returns to step S21.

On the other hand, in step S24, the same “Message”
If the "age-ID" exists in the Message-ID storage unit, the process proceeds to step S26, and logs in to the in-house mail server 10 using the TELNET port.

After logging in, the flow advances to step S27 to move to the user directory and cancel the transfer destination setting by deleting the transfer setting file or the like.

Next, in step S28, the user logs out of the in-house mail server 10 (TELNET port), and in step S29, logs out of the POP3 port, and the confirmation ends.

This prevents the same mail from going back and forth between both servers. In addition, "Message-I
“D” is a unique value for each mail on the public network 101.

As described above, the transfer destination mail server 12
When the in-house mail server 10 is set as the transfer destination, the same mail repeatedly returns to and from the server is detected by the same mail detection unit 13e of the mail terminal 13, and the in-house mail is released by the transfer destination setting release unit 13c. Since the setting of the transfer destination of the server 10 is canceled, it is possible to prevent the same mail from going back and forth between both servers indefinitely.

The same mail detecting means 13e is
"Mess" specified in MIME RFC822
Since the "age-ID" is used, the same mail can be easily and reliably detected.

(Fifth Embodiment) FIG. 7 is a flowchart showing the operation of the electronic mail automatic transfer system according to a fifth embodiment of the present invention. This electronic mail automatic transfer system has the same configuration as the electronic mail automatic transfer system shown in FIG. 4 of the fourth embodiment, and the description is omitted and FIG. 4 is referred to.

As shown in FIG. 7, the destination mail server 1
2 also shows a check method when the transfer setting to the in-house mail server 10 has been set, and the difference from FIG. 6 is the processing when there is no “Message-ID” in the mail header. That is, when there is no "Message-ID", only the header and the body of only one mail are stored (S34) and compared with the body and the header of the received mail.
It is checked whether the same mail has been received (S33). Even if the sender sends two or more e-mails having the same contents, the contents of the transmission date / time field of the header are different, and the same e-mail cannot exist.

Therefore, “Message” is added to the mail header.
Even if there is no “ge-ID”, whether or not the mail is the same can be easily confirmed based on the contents of the header and the body.

(Sixth Embodiment) FIG. 8 is a flow chart showing the operation of an electronic mail automatic transfer system according to a sixth embodiment of the present invention. This electronic mail automatic transfer system has the same configuration as the electronic mail automatic transfer system shown in FIG. 4 of the fourth embodiment, and the description is omitted and FIG. 4 is referred to.

Depending on the mail server, when a certain amount of mail or more is received, an error may be returned to a received mail thereafter. Also, the transfer destination mail server 12 goes down for some reason, and the SMTP
(Simple Mail Transfer Protocol) server may send back an e-mail notifying that the message cannot be sent. In these situations, an error notification mail will be sent to the original sender address.

Therefore, in FIG. 8, in steps S40 and S41, a confirmation mail is transmitted to the transfer destination address at regular intervals, and then the mail is received (S42 to S41).
44).

Next, if the mail is from the transfer destination mail server 12 or the mail distribution service ("YES" in S45), it is checked whether the mail is an error notification mail.
(S46) If it is an error notification mail ("YE" in S46)
S ″), the processing of steps S47 to S51 is performed to cancel the setting of the transfer destination, thereby preventing the transmission of the error notification mail thereafter.

On the other hand, if it is a transfer completion notice (S
("NO" at 46)), after a certain period of time, the confirmation mail is transmitted again.

As described above, the confirmation mail transmitting means 1
0a is the mail server 1 to which the confirmation mail is transferred periodically
When the error notification mail is transmitted from the transfer destination mail server 12 by the transfer error check means 10d, the error notification mail is decrypted to check whether the transfer to the transfer destination is an error. Whether the mail is normally transferred to the transfer destination by the in-house mail server 10 can be periodically checked, and the reliability can be improved.

In the first to sixth embodiments, the comparison of the header and the body of the mail, the storage and comparison of the “Message-ID”, the access to the server, the creation of the mail, and the transmission are performed using known techniques. The description in is omitted.

In the above-described second, fourth to sixth embodiments, the description has been made of the case where the mail confirmation processing is performed from the mail terminal 13. However, as shown in FIGS. 1 and 3 of the first and third embodiments. To
Confirmation mail transmission means 10a on the in-house mail server 10,
Confirmation mail transfer confirmation means 10b, transfer destination setting release means 1
0c, the transfer error checking means 10d and the same mail detecting means 10e may be operated as a daemon (a program to be executed automatically). In this case, even if the mail terminal 13 has not been activated, the specific mail (confirmation mail) is transmitted to the in-house mail server 10 to perform mail confirmation processing, transfer setting release processing, and the like.

The electronic mail automatic transfer system of the present invention is not limited to the above-described first to sixth embodiments, but can be applied to any mail server system, and can improve the convenience and high added value of the system. It is what we aim for.

[0077]

As is clear from the above, according to the automatic e-mail transfer system of the present invention, error notification mails can be reduced due to incorrect transfer settings, the same mails can be prevented from being stored on the server, and permanent loop mails can be avoided. There are excellent effects such as.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an electronic mail automatic transfer system according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of an electronic mail automatic transfer system according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of an electronic mail automatic transfer system according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of an electronic mail automatic transfer system according to a fourth embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the automatic e-mail transfer system when setting a transfer destination.

FIG. 6 is a flowchart showing an operation of the automatic e-mail transfer system during an automatic transfer process.

FIG. 7 is a flowchart showing the operation of the automatic e-mail transfer system according to the fifth embodiment of the present invention.

FIG. 8 is a flow chart showing the operation of the electronic mail automatic transfer system according to the sixth embodiment of the present invention.

[Explanation of symbols]

 10: internal mail server, 10a, 13a: confirmation mail transmission means, 10b, 13b: confirmation mail transfer confirmation means, 10c, 13c: transfer destination setting release means, 10d, 13d: transfer error confirmation means, 10e, 13e ... Same mail detection means, 11, 14: transfer setting file, 12: transfer destination mail server, 13: mail terminal, 101: network.

Claims (9)

[Claims] An electronic mail automatic transfer system for automatically transferring an e-mail arriving at a mail server to a set transfer destination, wherein when the transfer destination is set, a confirmation mail is transferred so as to be transferred to the set transfer destination. Confirmation mail sending means for sending to the original mail server; and confirmation mail transfer for confirming whether the confirmation mail transmitted by the confirmation mail transmission means has been normally transferred by the transfer source mail server. Confirmation means; and transfer destination setting release means for releasing the transfer destination setting of the transfer source mail server when the confirmation mail transfer confirmation means determines that the confirmation mail is not normally transferred. An automatic e-mail transfer system. 2. The electronic mail automatic transfer system according to claim 1, wherein when the mail server of the transfer source automatically transfers the mail, a transfer error for checking whether the transfer to the set transfer destination is an error. Confirming means, wherein, when the transfer error confirming means determines that the transfer to the transfer destination is an error, the transfer destination setting canceling means cancels the transfer destination setting of the transfer source mail server. Characterized automatic e-mail transfer system. 3. An electronic mail automatic transfer system for automatically transferring an e-mail arriving at a mail server to a set transfer destination, wherein the terminal device receiving the mail service of the mail server comprises: Confirmation mail sending means that sends a confirmation mail to the mail server that is the transfer source so that it is forwarded first, and the confirmation mail sent by the confirmation mail transmission means is normal by the transfer source mail server. The confirmation mail transfer confirmation means for confirming whether the confirmation mail has been transferred to the transfer destination mail server of the transfer source mail server when the confirmation mail transfer confirmation means determines that the confirmation mail has not been normally transferred. An automatic e-mail transfer system comprising: a transfer destination setting canceling means for canceling a setting. 4. The electronic mail automatic transfer system according to claim 3, wherein the terminal device determines whether an error occurred in the transfer to the set transfer destination when the transfer source mail server automatically transferred the mail. A transfer error check unit for checking whether the transfer destination setting release unit sets the transfer destination of the transfer source mail server when the transfer error check unit determines that the transfer to the transfer destination is an error. E-mail automatic transfer system characterized by canceling. 5. The automatic e-mail transfer system according to claim 1, wherein the confirmation e-mail transfer confirming means includes a “Return-Receipt-T” defined by RFC1521.
An electronic mail automatic transfer system for checking whether or not the above-mentioned confirmation mail has been normally transferred, based on an o "field and a Message-ID defined by RFC822. 6. The automatic e-mail transfer system according to claim 2, wherein said confirmation e-mail transmitting means periodically transmits said confirmation e-mail to a transfer destination; When an error notification mail is transmitted from the mail server of the transfer destination to the confirmation mail, the error notification mail is decrypted to check whether the transfer to the transfer destination is an error. Automatic mail transfer system. 7. The automatic e-mail transfer system according to claim 1, wherein the mail server of the transfer source is set as the transfer destination in the mail server of the transfer destination. The same mail detection means for detecting that mail repeatedly goes back and forth between the transfer source mail server and the transfer destination mail server; and the transfer destination setting release means, wherein the same mail detection means Automatically resetting the transfer destination of the transfer source mail server when detecting that the transfer server repeatedly moves back and forth between the transfer source mail server and the transfer destination mail server. . 8. The automatic e-mail transmission system according to claim 7, wherein the same mail detection means uses RFC to determine the same mail.
An electronic mail automatic transfer system using Message-ID defined in 822. 9. The electronic mail automatic transfer system according to claim 7, wherein the same mail detecting means determines the same mail by comparing a header and a body of a received mail with a header and a body of a previously received mail. E-mail automatic transfer system characterized by performing.