JP2006352734A - Communication system and facsimile system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To transmit electronic mail by inputting a facsimile number to a destination of the electronic mail without need to use any special electronic mail system or electronic mail application software. <P>SOLUTION: A host device comprises a number designation section for designating a facsimile number of facsimile transmission utilizing a telephone line for a destination of electronic mail, a first electronic mail server comprises an error transmission section for transmitting error mail, destined to a facsimile server, to a second electronic mail server, and the facsimile server comprises a destination determination section for determining whether the destination of the electronic mail is a facsimile number or not and a facsimile transmission section for, if the destination of the electronic mail is the facsimile number, converting the electronic mail into facsimile form and performing the facsimile transmission of the electronic mail. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a communication system and a facsimile system that convert data received in an electronic mail format into a facsimile format and transmit the data, or convert data received in a facsimile format into an electronic mail format and transmit the data.

  Conventionally, when e-mail data is transmitted to a facsimile apparatus using e-mail application software installed in an e-mail transmission / reception apparatus such as a personal computer, a facsimile server is described by describing a facsimile number in a portion other than the destination. Analyzes the facsimile number and transmits e-mail data to the corresponding facsimile number (see, for example, Patent Document 1).

  FIG. 2 is a diagram showing a configuration of a conventional communication system.

In the figure, reference numeral 101 denotes a client personal computer (A) that is a transmission source of e-mail data, and transmits e-mail data 102 to a counterpart personal computer (D) 105 that is a transmission partner. The e-mail data 102 includes destination information 102a and a text 102b. The e-mail data 102 is transmitted to the facsimile server (C) 104 designated in the destination information 102a via the e-mail server (B) 103. Then, the facsimile server (C) 104 reads the address of the transmission destination from the body 102b of the e-mail data 102. If the address is a telephone number, the facsimile server (C) 104 calls the wide area public line network and transmits the e-mail data 102 to the facsimile. The data is converted to data and transmitted to the counterpart personal computer (D) 105.
JP 2003-8652 A

  However, in the conventional communication system, when facsimile transmission is performed using e-mail application software, the destination (To :) designated by the e-mail application software, that is, the role of the repeater is added to the destination information 102a. Had to enter the e-mail address of the facsimile server (C) 104 having Therefore, the user of the client personal computer (A) 101 needs to know the e-mail address of the facsimile server (C) 104. In addition, since the facsimile number of the partner personal computer (D) 105 that is the final destination cannot be designated in the destination information 102a, the facsimile number is added to the address book attached to general electronic mail application software. Even if registered, it could not be used.

  However, a technique for automatically changing a facsimile number to an e-mail address has also been proposed. However, in this case, it is necessary to change a general electronic mail system or electronic mail application software. Therefore, a dedicated e-mail system or dedicated e-mail application software must be used, and the user cannot use the familiar e-mail system or e-mail application software.

  The present invention solves the problems of the conventional communication system, and it is not necessary to use a special e-mail system or e-mail application software, and a facsimile number can be input and transmitted to an e-mail destination. An object of the present invention is to provide a communication system and a facsimile system.

  Therefore, in the facsimile system of the present invention, a first electronic mail server that receives an electronic mail from a host device, a second electronic mail server that receives the electronic mail from the first electronic mail server, A facsimile system including a facsimile server that acquires an electronic mail received by a second electronic mail server, converts the electronic mail into a facsimile format, and transmits the facsimile, wherein the higher-level device sends the electronic mail to a destination of the electronic mail An error transmitting unit that includes a number specifying unit that specifies a facsimile number for facsimile transmission using a telephone line, and wherein the first electronic mail server transmits an error mail addressed to the facsimile server to the second electronic mail server And the facsimile server has a destination of the e-mail as a fax. Determining destination decision unit whether a millimeter number, and, if the e-mail destination is a facsimile number, and a facsimile transmission unit for facsimile transmission by converting the e-mail in facsimile format.

  According to the present invention, in the facsimile system, it is not necessary to use special e-mail or e-mail application software, and a facsimile number can be input and transmitted to the e-mail destination.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a facsimile system according to the first embodiment of the present invention.

  In the figure, reference numeral 10 denotes a facsimile system as a communication system in the present embodiment. Here, in order to simplify and clarify the description, for example, a case where the networks are in the same domain, such as a network in the same company, will be described. The facsimile system 10 includes an SMTP server 11 as an e-mail transmission server and a first e-mail server, a POP server 12 as an e-mail reception server and a second e-mail server, and a host device. A client PC 21, a fax gateway 13 as a facsimile server, and a facsimile machine 22 are included.

  Here, the SMTP server 11 and the POP server 12 are general servers for delivering electronic mail. The SMTP server 11 is an e-mail server for transmission that receives e-mails for all destinations from the client PC 21 and the fax gateway 13 and distributes the e-mails to each destination. SMTP is an abbreviation for Simple Mail Transfer Protocol. . The POP server 12 receives e-mails from the SMTP server 11 and stores them for each destination. When there is a request from the client PC 21 or the fax gateway 13, the POP server 12 transmits e-mails for the respective destinations. It is a mail server, and POP is an abbreviation for Post Office Protocol. The SMTP server 11 sends an error mail addressed to the fax gateway 13 to the POP server 12 and an error transmission unit (not shown) and determines whether the received electronic mail is an error mail from the user registration table (not shown). A determination unit is provided, and a user who uses the client PC 21 in charge of the SMTP server 11 is registered in the user registration table.

  The fax gateway 13 is a facsimile transmission / reception server, and a destination determination unit 14 for determining whether or not the destination of the email is a facsimile number. When the destination of the email is a facsimile number, the email gateway Is sent to and received from the facsimile transmission unit 15 for converting the data into the facsimile format and transmitting the facsimile, the line control unit 24 for making a telephone call to the public telephone network 31 as a telephone line, and the SMTP server 11 and the POP server 12. A mail transmission / reception unit 23 is included. The fax gateway 13 accesses the POP server 12 every predetermined time. Further, the fax gateway 13 transmits the electronic mail to the SMTP server 11 as addressed to the client PC 21 when the destination of the electronic mail is not a facsimile number. Further, the facsimile transmission unit 15 transmits an error mail addressed to the client PC 21 to the SMTP server 11 when an error occurs by facsimile transmission.

  A facsimile machine 22 is connected to the public telephone network 31. The facsimile apparatus 22 has a line control unit 32 for making a telephone call to the public telephone network 31.

  The client PC 21 is a personal computer, installed with general e-mail application software, can send e-mail to the SMTP server 11, and has an e-mail account “aa@aaa.com” in the POP server 12. If there is an e-mail addressed to “,” the e-mail can be received. The client PC 21 includes a number designation unit (not shown) that designates a facsimile number for facsimile transmission using the public telephone network 31 as an e-mail destination.

  The e-mail 61 is an example of e-mail that the client PC 21 transmits to the SMTP server 11. In the electronic mail 61, (To :) is a field indicating a destination, and in the example shown in the figure, the destination “01@aaa.com” of the facsimile apparatus 22 as a transmission destination is set.

  Further, the LAN / WAN 25 is a network connected using a local area network or a public line network, where LAN is an abbreviation for Local Area Network, and WAN is an abbreviation for Wide Area Network. The public telephone network 31 is a telephone line network.

  The SMTP server 11, the POP server 12, and the fax gateway 13 may be accommodated in one apparatus, or may be connected to a network such as a LAN / WAN 25, respectively.

  Next, the operation of the facsimile system 10 having the above configuration will be described.

  FIG. 3 is a flowchart showing the operation of the facsimile system according to the first embodiment of the present invention.

  First, the SMTP server 11 is set in advance so as to send an e-mail address to which the account is not registered to the fax gateway 13 as an error mail. In this case, the destination of the error mail is “cc@aaa.com”. In addition, although the e-mail account “aa@aaa.com” of the client PC 21 is registered in the SMTP server 11, information of the facsimile apparatus 22 is not registered.

  Then, the user uses general e-mail application software installed in the client PC 21 and designates “01@aaa.com” as the destination and transmits the e-mail. The e-mail data is stored in the SMTP server 11. Since the destination “01@aaa.com” is not registered as an account, the SMTP server 11 creates an error mail. Here, since the SMTP server 11 is set to send the error mail to the fax gateway 13 to “cc@aaa.com”, the error mail created by the SMTP server 11 has the address “cc”. Stored in the POP server 12 as “@ aaa.com”.

  Next, the fax gateway 13 receives the error mail and takes the e-mail data whose destination is “cc@aaa.com” from the POP server 12. Then, the destination determination unit 14 of the fax gateway 13 reads the part before the domain name “01@aaa.com”, which is the original destination of the collected e-mail data, and obtains the character string “01”. Here, the destination determination unit 14 determines whether or not the read character string “01” is a number. In this case, since it is an array of 0 to 9, it is determined to be a number. When it is determined that the number is not a number (for example, when the read character string is “XX” or the like), the fax gateway 13 creates an error mail and transmits the error mail to the sender. Then, the error mail is stored in the POP server 12.

  Here, “01@aaa.com” is designated as the destination, and the destination determination unit 14 determines whether or not to perform facsimile transmission based on whether or not the part before the domain name of the designated destination is a number. The destination is specified as “FAX01@aaa.com”, and the destination determination unit 14 performs facsimile transmission based on whether “FAX” is present at the head of the specified destination. It may be determined whether or not. Alternatively, a character string between “FAX” and “@” may be extracted, and it may be determined whether to perform facsimile transmission based on whether the character string is a number.

  Next, the facsimile transmission unit 15 of the fax gateway 13 converts the electronic mail into a facsimile format. That is, the e-mail data is converted into facsimile data. In this case, data in the body of the e-mail is converted into a transmission image, or a file attached to the e-mail is converted. At this time, since a description of an error is added to the e-mail data, that portion is deleted. The facsimile transmission unit 15 then calls the read number “01” and performs facsimile transmission. Then, the facsimile apparatus 22 receives a facsimile and receives an electronic mail converted into a facsimile format.

  Here, as described above, when the destination determination unit 14 determines that the character string “01” is not a number, the fax gateway 13 creates an error mail and sends the error mail to the sender “aa@aaa.com”. Send to address. Then, since the SMTP server 11 transmits the received error mail to the POP server 12, the error mail is stored in the POP server 12. The client PC 21 receives the error mail. If an electronic mail is to be sent to PC: D, it can be sent by registering PC: D in the user registration table.

Next, a flowchart will be described.
Step S1 The SMTP server 11 is set to send a mail addressed to an account not registered as an error mail addressed to the fax gateway 13.
Step S2 The user transmits “01@aaa.com” as the destination.
Step S3 Since the SMTP server 11 does not register “01@aaa.com” as an account, it sends an error mail to the fax gateway 13.
Step S4: The POP server 12 stores the error mail as the destination “cc@aaa.com”.
Step S5 The fax gateway 13 receives an error mail from the POP server 12.
Step S6: The address determination unit 14 reads the error mail address.
Step S7: The destination determination unit 14 determines whether the destination is a number. If the destination is a number, the process proceeds to step S8. If the destination is not a number, the process proceeds to step S11.
Step S8 The facsimile transmission unit 15 converts the electronic mail data into facsimile data.
Step S9: The facsimile transmission unit 15 performs facsimile transmission for the read number.
Step S10 The facsimile apparatus 22 receives a facsimile.
Step S11 The fax gateway 13 creates an error mail and sends it to the sender.
Step S12 The SMTP server 11 transmits an error mail to the POP server 12.
Step S13: The POP server 12 stores the error mail.
Step S14 The client PC 21 receives the error mail.

  Next, a case where facsimile transmission cannot be performed due to line congestion or the like will be described.

  FIG. 4 is a flowchart showing the operation when the facsimile transmission in the facsimile system according to the first embodiment of the present invention cannot be performed.

  In this case, the operations until the facsimile transmission unit 15 performs facsimile transmission and the facsimile apparatus 22 performs facsimile reception are the same as the operations up to step S10 shown in FIG.

  Here, when the facsimile transmission unit 15 performs facsimile transmission, the fax gateway 13 determines whether or not the facsimile transmission is normally completed. If the facsimile transmission does not end normally, the fax gateway 13 creates an error mail as described above when the destination determination unit 14 determines that the character string “01” is not a number. The error mail is transmitted to the transmission source “aa@aaa.com”. Then, since the SMTP server 11 transmits the received error mail to the POP server 12, the error mail is stored in the POP server 12. The client PC 21 receives the error mail.

  Here, an error mail is sent to the sender when the facsimile transmission is not normally completed. However, when the facsimile transmission is normally completed, a transmission completion notification is created and the transmission completion notification is generated. May be transmitted to the sender. In this way, the user can confirm on the client PC 21 whether or not the electronic mail specifying “01@aaa.com” as the destination has been normally transmitted.

Next, a flowchart will be described.
Step S21 The fax gateway 13 determines whether or not the facsimile transmission has been completed normally. If the facsimile transmission does not end normally, the process proceeds to step S22. If the facsimile transmission ends normally, a transmission completion notification may be transmitted to the sender.
Step S22 The fax gateway 13 creates an error mail and sends it to the sender.
Step S23 The SMTP server 11 transmits an error mail to the POP server 12.
Step S24: The POP server 12 stores the error mail.
Step S25 The client PC 21 receives the error mail.

  As described above, in the facsimile system 10 of the present embodiment, when image data is transmitted from the client PC 21 to the facsimile apparatus 22, the field indicating the destination of the e-mail can be used as originally intended. Will not be confused. There is also no need for special e-mail application software. Furthermore, the user does not need to know the e-mail address of the fax gateway 13.

  Furthermore, with general electronic mail application software, the destination can be registered in the address book in advance, so that the facsimile number can be easily registered in the address book of the client PC 21. This facilitates the management of the user's destination. Since the conventional SMTP server 11 and POP server 12 are used, the user can continue to use the conventional electronic mail application software. In addition, it is possible to cope only by changing the fax gateway 13.

  Next, a second embodiment of the present invention will be described. In addition, what has the same structure as the said 1st Embodiment gives the same code | symbol, and abbreviate | omits the description. The description of the same operation and the same effect as those of the first embodiment is also omitted.

  FIG. 5 is a diagram showing a configuration of a facsimile system according to the second embodiment of the present invention.

  In the present embodiment, the fax gateway 13 includes a facsimile reception unit 33 in addition to the destination determination unit 14, the facsimile transmission unit 15, the line control unit 24, and the mail transmission / reception unit 23. The facsimile receiving unit 33 receives facsimile data from the public telephone network 31, reads out the caller telephone number stored in the CSI / TSI field, which is a transmission procedure signal, from the received facsimile data, and NSS / NSF Read the e-mail address stored in the field. Further, the facsimile receiving unit 33 converts the received facsimile data into e-mail data, and in the To: field as a field indicating the destination of the converted e-mail data, the e-mail destination read from the NSS / NSF field is displayed. Is stored in the From: field as the field indicating the source of the converted e-mail data with “@ aaa.com” added to the source telephone number “01” read from the CSI / TSI field. The e-mail is transmitted to the SMTP server 11. The NSS, NSF, CSI and TSI are abbreviations for facsimile procedures.

  Reference numeral 62 denotes an example of facsimile data created by the facsimile apparatus 22. In the facsimile data 62, “02” is set in the telephone number of the fax gateway 13 as the telephone number to be dialed, and “01”, which is the telephone number of the facsimile apparatus 22 itself, is set in the CSI / TSI field. The destination electronic mail account “aa@aaa.com” is set in the NSF field. Further, a text as facsimile data is described. The facsimile apparatus 22 includes an address designation unit (not shown) that designates an e-mail destination as a destination.

  Reference numeral 63 denotes an example of e-mail data obtained by converting the facsimile data 62 by the fax gateway 13. In the e-mail data 63, “aa@aaa.com” that is the e-mail account of the client PC 21 is set in the To: field as a destination field, and the From: field as a field indicating a sender is A domain name “@ aaa.com” of the SMTP server 11 and the POP server 12 added to the telephone number of the facsimile machine 22 as a source telephone number, that is, “01@aaa.com” is set. Furthermore, the text of the electronic mail (for example, “Fax has been received” is set) and the image data of the text of the facsimile data as an attached file are included.

  Since other configurations are the same as those in the first embodiment, description thereof will be omitted.

  Next, the operation of the facsimile system in this embodiment will be described.

  FIG. 6 is a flowchart showing the operation of the facsimile system according to the second embodiment of the present invention.

  First, the user sets an e-mail account of the client PC 21 as a sender ID. Then, the user performs facsimile transmission to the fax gateway 13. Then, the facsimile receiver 33 of the fax gateway 13 responds to the facsimile transmission and receives the facsimile data. Subsequently, the facsimile receiving unit 33 extracts the source telephone number “01” from the CSI / TSI field of the received facsimile data, and further extracts the e-mail destination “aa@aaa.com” from the NSS / NSF field. .

  Subsequently, the facsimile receiving unit 33 converts the received facsimile data into e-mail data. Then, the e-mail destination “aa@aaa.com” taken out from the NSS / NSF field of the facsimile data is stored in the To: field of the e-mail data, and further, the outgoing call taken out from the CSI / TSI field of the facsimile data “01@aaa.com” obtained by adding “@ aaa.com” to the original telephone number “01” is stored in the From: field of the email data to complete the email data.

  Subsequently, the mail transmission / reception unit 23 of the fax gateway 13 transmits an electronic mail to the SMTP server 11. Then, since the SMTP server 11 transmits the received electronic mail to the POP server 12, the electronic mail is stored in the POP server 12. Then, the client PC 21 receives the electronic mail.

Next, a flowchart will be described.
Step S31 The e-mail account “aa@aaa.com” is set as the sender ID, and the facsimile is transmitted to the fax gateway 13.
Step S32 The facsimile receiver 33 receives facsimile data.
Step S33 The facsimile receiver 33 takes out the caller telephone number “01” from the CSI / TSI field.
Step S34 The facsimile receiving unit 33 takes out the e-mail destination “aa@aaa.com” from the NSS / NSF field.
Step S35 The facsimile receiver 33 converts the facsimile data into e-mail data.
Step S36 The facsimile receiving unit 33 stores the e-mail destination “aa@aaa.com” in the To: field.
Step S37 The facsimile receiving unit 33 stores the caller telephone number “01” in the From: field.
Step S38 The mail transmitting / receiving unit 23 transmits an electronic mail to the SMTP server 11.
Step S39: The SMTP server 11 receives an e-mail.
Step S40 The POP server 12 stores the e-mail.
Step S41 The client PC 21 receives an e-mail.

  As described above, in the facsimile system 10 of the present embodiment, the SMTP server 11 and the POP server are added to the telephone number of the facsimile apparatus 22 in the From: field as a field indicating the transmission source of the e-mail data into which the facsimile data is converted. 12 is added with the domain name “@ aaa.com”, that is, “01@aaa.com” is set. Therefore, it is possible to easily determine that the transmission source is the facsimile apparatus 22 by referring to the part before “@” in the transmission source indicated in the From: field.

  Further, if the client PC 21 uses normal e-mail application software, the contents of the From: field are automatically moved to the To: field when a reply operation is performed. In conjunction with the operation described in the embodiment, the reply operation becomes easier.

  Next, a third embodiment of the present invention will be described. In addition, what has the same structure as the said 1st and 2nd embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description. Also, the description of the same operations and effects as those of the first and second embodiments is omitted.

  FIG. 7 is a diagram showing a configuration of a communication system according to the third embodiment of the present invention.

  In FIG. 7, reference numeral 40 denotes a communication system in the present embodiment. The communication system 40 includes an SMTP server 11 as a first electronic mail server, a POP server 12 as a second electronic mail server, a first PC 41 as a first upper apparatus, and a first PC as a second upper apparatus. 2PC42 and the communication server 43 are provided.

  Here, the first PC 41 is a personal computer, installed with general electronic mail application software, and can transmit an electronic mail to the SMTP server 11. Reference numeral 64 denotes an example of an electronic mail that the first PC 41 transmits to the SMTP server 11.

  Further, the second PC 42 is a personal computer, and general electronic mail application software is installed, and “XX” is assigned as an IP (Internet Protocol) address. Further, the communication server 43 includes a host search unit 44 and an IP communication unit 45, and when receiving an electronic mail from the POP server 12 and detecting that the destination of the electronic mail is the second PC 42, the second PC 42 exists. If it exists, the electronic mail is transmitted to the second PC. Note that 65 is an example of packet data that the communication server 43 transmits to the second PC 42.

  In the first and second embodiments, the case where the communication system is a facsimile system has been described. However, this is an apparatus capable of reading, printing, storing, and the like of a document with a single apparatus. The present invention can also be applied to a digital multi-function peripheral system also called MFP (Multi Function Peripheral). For example, in the first embodiment, if a means for inputting an e-mail destination is provided in the operation unit of the digital multi-function peripheral, the e-mail address is input by the operation unit, an original is read from the reading unit, and the SMTP server 11 is also applicable to a digital multi-function peripheral system.

  In addition, an example in which general electronic mail application software is installed in a personal computer, a server, and the like and connected to a network such as the LAN / WAN 25 has been described. However, the digital multi-function peripheral includes a hard disk and a modem, If the operating system and e-mail application software are incorporated, all the functions described in the first embodiment can be incorporated into the digital multi-function peripheral. Furthermore, if an electronic mail address is assigned to the digital multifunction peripheral, the second embodiment can be applied to the system of the digital multifunction peripheral.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

It is a figure which shows the structure of the facsimile system in the 1st Embodiment of this invention. It is a figure which shows the structure of the conventional communication system. It is a flowchart which shows operation | movement of the facsimile system in the 1st Embodiment of this invention. 6 is a flowchart showing an operation when the facsimile transmission in the facsimile system according to the first embodiment of the present invention cannot be performed. It is a figure which shows the structure of the facsimile system in the 2nd Embodiment of this invention. It is a flowchart which shows operation | movement of the facsimile system in the 2nd Embodiment of this invention. It is a figure which shows the structure of the communication system in the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Facsimile system 11 SMTP server 12 POP server 13 Fax gateway 14 Destination determination part 15 Facsimile transmission part 21 Client PC
22 facsimile machine 31 public telephone network 40 communication system 41 first PC
42 2nd PC
43 Communication server 61, 64 E-mail

Claims (9)

(A) a first e-mail server that receives e-mail from the host device;
(B) a second email server that receives the email from the first email server;
(C) a facsimile system comprising a facsimile server that obtains an electronic mail received by the second electronic mail server, converts the electronic mail into a facsimile format, and transmits the facsimile;
(D) the host device includes a number designating unit for designating a facsimile number for facsimile transmission using a telephone line as a destination of the e-mail;
(E) The first electronic mail server includes an error transmission unit that transmits an error mail addressed to the facsimile server to the second electronic mail server,
(F) the facsimile server includes a destination determination unit that determines whether the destination of the electronic mail is a facsimile number, and converts the electronic mail into a facsimile format when the destination of the electronic mail is a facsimile number. And a facsimile transmission unit for facsimile transmission. The first electronic mail server includes a determination unit that determines whether or not the received electronic mail is an error mail from a user registration table, and the first electronic mail server is in charge of the user registration table The facsimile system according to claim 1, wherein a user who uses the host device is registered. The facsimile system according to claim 1, wherein the facsimile server accesses the second electronic mail server every predetermined time. 2. The facsimile system according to claim 1, wherein, when the destination of the electronic mail is not a facsimile number, the facsimile server transmits the electronic mail to the first electronic mail server as addressed to the host apparatus. 2. The facsimile system according to claim 1, wherein when an error occurs due to facsimile transmission, the facsimile transmission unit transmits an error mail addressed to the higher-level device to the first electronic mail server. The facsimile system according to claim 1, wherein the first electronic mail server, the second electronic mail server, and the facsimile server are accommodated in one apparatus. The facsimile system according to claim 1, wherein the first electronic mail server, the second electronic mail server, and the facsimile server are each connected to a network. (A) a first e-mail server that receives e-mail from the host device;
(B) a second email server that receives the email from the first email server;
(C) a facsimile system comprising: a facsimile server that converts data received from a facsimile apparatus from a facsimile format to an electronic mail format and transmits the electronic mail to the first electronic mail server;
(D) The facsimile apparatus includes an address designating unit that designates an e-mail destination as a destination.
(E) The facsimile server reads the telephone number of the transmission source and the destination of the e-mail from the data received from the facsimile apparatus, and is set in the first e-mail server and the second e-mail server. A facsimile receiving unit that adds a domain name to a telephone number of a transmission source, converts data received from the facsimile from a facsimile format to an electronic mail format, and transmits the converted data to the first electronic mail server; Facsimile system. (A) a first e-mail server that receives e-mail from the first host device;
(B) a second email server that receives the email from the first email server;
(C) a communication system comprising a communication server that acquires an email received by the second email server and transmits the email to a second host device,
(D) the first e-mail server transmits the e-mail to the second e-mail server as an e-mail addressed to the communication server;
(E) When the communication server receives an email from the second email server and detects that the destination of the email is the second host device, the second host device exists. And if it exists, the electronic mail is transmitted to the second host apparatus.

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