JP3871941B2 - Spam mail automatic disposal method, mail server and program in mail server of mobile phone - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an e-mail technology in a mobile phone, and in particular, an automatic mail disposal method for deleting junk mail and the like in a mail server of a mobile phone.,mail serverAnd the program.
[0002]
[Prior art]
In recent mobile phones having an electronic mail function, damage caused by spam mail has become a major problem. Damages include user discomfort and damage caused by unnecessary packet charges. There are various forms of junk e-mail. For example, there are a lot of e-mails from the same sender, e-mails sent simultaneously from different senders (chain mail), or unwanted advertisements or solicitation e-mails. is there. As a countermeasure against such mail, there is a demand for a system that automatically eliminates and disposes of mail by some method.
[0003]
As an example of a conventional automatic spam mail disposal system, there is a technique disclosed in Japanese Patent Laid-Open No. 2000-163341. Hereinafter, the prior art will be described by taking this technique as an example. FIG. 10 is a system configuration diagram for explaining this prior art. A plurality of mail servers 1 are connected to the Internet 3. A plurality of electronic mail user (hereinafter referred to as user) terminals (mobile phones) 2 are connected to the mail server 1 through a telephone line 4. The terminal 2 has an email creation and transmission / reception function. Electronic mail (hereinafter “mail”) is transmitted / received (delivered and transferred) between the mail servers 1 via the Internet 3. The mail server 1 includes predetermined mail server software (program).
[0004]
Each of the mail servers 1 holds mail reception condition information 5 for individual users. FIG. 11 is a configuration diagram of the mail reception condition information 5 used in the spam mail automatic disposal process in the mail server 1 in the conventional system. In FIG. 11, the mail reception condition information 5 describes the same sender condition 51, the maximum size condition 52, and the known sender list 53 as the user's mail reception conditions.
[0005]
The same sender condition 51 represents the upper limit of the number of emails per day that can be received (permitted to receive) from the same email sender (for example, in FIG. 10, 10 messages / day = up to 10 messages per day). It is used to limit the receipt of a large number of mails per day from the same mail sender.
[0006]
The maximum size condition 52 represents the upper limit of the amount of data that can be received per email (for example, in FIG. 10, 500 KB / case = up to 500 KB per email), and a very large size email is received. Used to limit
[0007]
The known sender list 53 is a list in which e-mail addresses of specific individuals (or groups) already known by the user are described, and for the purpose of restricting mail reception from individuals (groups) that the user does not know. Used. For example, in FIG. 11, mail addresses such as “aaa@xxx.co.jp” and “bbb@xxx.co.jp” are registered in the list, and predetermined processing is performed on received mail using this address information. Done.
[0008]
The above items in the mail reception condition information 5 can be arbitrarily set by the user. The mail server 1 holds the following automatic mail deletion setting information 6 in the mail reception condition information 5 for each mail recipient (user). A user is distinguished by an email address. The automatic mail deletion setting information 6 holds a list of setting items related to automatic mail deletion processing for each mail sender set by the mail receiver (user). FIG. 12 shows the configuration of the automatic mail deletion setting information 6.
[0009]
This mail automatic deletion setting information 6 includes, for each mail sender, a sender mail address 61, an on / off setting 62 for determining whether or not to subject to automatic mail deletion processing, and 1 for automatic mail deletion processing. Maximum number of e-mails that can be received per day (reception permission) 63 (hereinafter referred to as “reception upper limit value”), ON / OFF setting of whether or not to notify the sender of deletion when automatic deletion processing is performed (Hereinafter, “automatic notification setting”) 64.
[0010]
Here, as settings for the element of the mail sender, a setting 65 for the unknown sender mail, an unknown sender mail (mail from a sender that is not unknown but is not listed in the known sender list 53). It is assumed that the setting 66 can be performed.
[0011]
Further, as identification information for automatic mail deletion processing, a mail reception list 67 and a mail reception number 68 for each mail sender on a certain day are held for each mail receiver (user).
[0012]
Next, the operation of the conventional system will be described. FIG. 13 is a diagram showing a state of mail transmission / reception in the conventional system. For example, there is a case where a large amount of mail for the purpose of harassment or the like is sent from the same mail sender 7 (commonly called spam mail). However, examples of such email include a case where the sender email address is not a regular one (in the case of a dummy address) or a case where the sender email address is unknown.
[0013]
In FIG. 13, the mail sent from the mail sender terminal 7 via the mail server 8 is delivered via the Internet 3 to the mail server 1 used by the mail receiver (user). At this time, the mail server 1 automatically deletes the received mail that does not satisfy the mail reception conditions described in the information 5 based on the mail reception condition information 5 preset by the user.
[0014]
Here, “does not satisfy the mail receiving condition” means that at least one of the following three conditions is satisfied.
1: The number of mails sent exceeds the upper limit set in the same sender condition 51.
2: The size of the sent mail exceeds the upper limit set in the maximum size condition 52.
3: The sender email address of the sent email is not listed in the known sender list 53.
[0015]
Among the received mails in the mail server 1, mails that satisfy the mail reception conditions in the mail reception condition information 5 are stored in the mail box in the mail server 1 as they are. In a state where the user is connected to the mail server 1 via the telephone line 4 using the terminal 2, the mail addressed to the user stored in the mail server 1 is transmitted to the terminal 2 (= in the terminal 2 Completion of email reception).
[0016]
When the mail server 1 receives a mail, the mail server 1 reads mail receiver information (destination mail address), mail sender information (sender mail address), and the like from the received mail. Subsequently, referring to the mail automatic deletion setting information 6 of the corresponding mail recipient, whether or not to automatically delete the received mail is identified and determined.
[0017]
If the received mail is not automatically deleted as a result of the identification based on the automatic mail deletion setting information 6, it is stored in the user's mailbox. When the mail recipient (user) accesses the mail server 1, the mail stored in the mail box is transmitted to the user terminal 2. On the other hand, if the received mail is automatically deleted as a result of the identification, if the sender of the mail is listed in the known mail sender list 53 and the automatic notification setting 64 is set to “notify” Then, an e-mail describing the automatic deletion and the reason thereof is automatically transmitted to the e-mail sender 7 of the deleted e-mail.
[0018]
Next, an example of the automatic mail deletion setting information 6 relating to a certain mail recipient (user) will be described. For example, when setting not to receive any single email from an unknown sender, the automatic deletion function 62 is set to “valid” for a mail whose sender email address is unknown, and the reception upper limit 63 is set. “0 cases” is set, and the automatic notification function 64 is set to “invalid (do not do)”.
[0019]
In addition, when setting to receive a total of 20 emails from unknown senders per day, the automatic deletion function 62 is set to “valid” for emails with unknown sender email addresses, and the upper limit of reception 63 is set to “20 cases”, and the automatic notification function 64 is set to “valid”.
[0020]
In addition, when the sender email address is “aaa@xxx.co.jp”, up to 30 emails per day are received and when automatic deletion is set to be automatically notified, the automatic deletion function 62 is set to “enabled”. Then, the reception upper limit 63 is set to “30”, and the automatic notification function 64 is set to “valid”.
[0021]
Also, when setting to receive unlimited emails with the sender email address “bbb@xxx.co.jp”, the automatic deletion function 62 is set to “invalid”, the reception upper limit value 63 is not set, and automatic notification is performed. Function 64 is set to “invalid”. Each of the above settings is as shown in FIG.
[0022]
Next, FIG. 15 shows an example of a mail reception list 67 relating to a certain mail recipient (user) when automatic deletion is set as described above. In this example, the mail from the sender address “aaa@xxx.co.jp” has the reception upper limit 63 set to 30, so that all 12 are received. In addition, the mail from the sender address “bbb@xxx.co.jp” has not been set with the reception upper limit 63, and therefore all 32 are received. On the other hand, for mails from sender addresses “ccc˜”, “ddd˜”, “eeee˜” (all unknown senders), the total number of received mails is received in the unknown sender mail setting 66. Since the upper limit value (20 in this case) has been reached, this indicates a state in which mail from unknown senders thereafter has been subject to automatic deletion.
[0023]
When the mail server 1 operates according to the above settings and processing, the mail receiver (user) is identified as unnecessary by the mail reception condition setting and received (that is, stored and stored in the mail server 1). (Transmission to terminal 2) is not performed. Thereby, useless use of the telephone line 4 for unnecessary mail and reception of mail to the terminal 2 can be avoided. The mail recipient (user) does not receive the number of mails exceeding the set upper limit value from the same mail sender. Emails with thousands or tens of thousands, such as spam emails, are deleted in advance in the mail server 1, so that the terminal 2 of the mail recipient (user) is connected to the mail server 1 via the telephone line 4. You can avoid the damage of being free.
[0024]
In addition, the mail recipient (user) arbitrarily sets the mail automatic deletion setting information 6, whereby fine automatic deletion / reception permission can be designated for each mail sender. Automatic deletion / reception permission can also be specified for mails from unknown mail senders or unknown mail senders. Also, for example, by entering a specific sender email address in the automatic email deletion setting information 6, enabling the automatic deletion function, and setting the reception upper limit value to 0, emails from this specific sender can be received. You can also prevent them from receiving anything.
[0025]
Further, when the mail server 1 automatically deletes the received mail, the mail server 1 notifies the sender of the deleted mail that the automatic deletion processing has been performed and the automatic deletion is performed based on the automatic notification setting 64 of the mail automatic deletion setting information 6. Automatically send an email with the reason. Thereby, the mail sender can know that his / her mail did not reach the recipient.
[0026]
Since this conventional technique can exhibit an effect by improving only the mail server 1 (especially software), it is not necessary to modify the user terminal 2 (including mail transmission / reception software).
[0027]
[Problems to be solved by the invention]
However, the above prior art has the following problems. As a first problem, it is necessary for the user himself / herself to register the sender mail address and other information in the mail server in order for the mail receiver (user) to perform the mail reception setting regarding the known individual (group). A point is mentioned. By the registration process by the user, reception can be limited by setting an e-mail address immediately when necessary. However, the e-mail address registration process is basically time-consuming. In addition, current mobile phones often have a shortage of items that can be registered as the reception settings. Even if a large number of items can be registered, a large amount of labor is required to register all the mail address information.
[0028]
As a second problem, in the case of a function that limits the reception by setting the upper limit of the number of messages that can be received from the same sender as a mail reception condition in a day, for example, the number of messages received on a day is 1 to 3 Even if it is set to a small number of cases, the number of cases is often delivered in the end, and conversely, setting a large number of cases does not prevent spam mail, so it is difficult to set the number of cases effectively Is mentioned.
[0029]
As a third problem, in the case of a function that restricts mail reception from unknown individuals (groups) whose users do not know the mail address as a mail reception condition, even unknown mail addresses can be received from acquaintances and friends There is a point that restricts about the e-mail.
[0030]
  The present invention has been made in view of such problems, and automatically identifies junk mail etc. according to a predetermined identification condition in a mail server of a mobile phone, and information such as sender mail address for junk mail etc. Even if the password is changed, the above-mentioned identification conditions are automatically updated and identified, and automatic deletion processing of spam mail etc. can be performed to prevent unnecessary reception.,mail serverAnd to provide a program.
[0031]
  In addition, an automatic mail disposal method on a mail server that allows users to use the system with only a few initial settings without requiring the troublesome process of registering email addresses as receiving conditions.,mail serverAnd to provide a program.
[0032]
[Means for Solving the Problems]
  To achieve this goal,BookThe invention is based on an extraction process of checking whether or not a URL is included in the mail text of an email received via a network in an email server of a mobile phone, and extracting the URL if included in the email text. An identification process for identifying whether the received mail is spam mail or chain mail, and the received mail identified as spam mail or chain mail in that process is deleted without accumulating in the user's mailbox A deletion step to process,In the spam mail automatic disposal method, when the URL extracted in the extraction process is an unconfirmed URL, a monitoring process for a predetermined time is started for a received mail including the unconfirmed URL in the text, and the unconfirmed URL is stored in the text within the predetermined time. The received mail included in the message is stored in the temporary storage area, the number of received messages is counted, and if the number of received messages exceeds the predetermined number after a predetermined time has passed, the mail including the unconfirmed URL in the text is spam mail or chain mail. Provided is a spam mail automatic disposal method further comprising a monitoring step for judging..
[0033]
  In addition, the present invention examines whether or not a URL is included in a mail text received via a network, and extracts the mail if it is included, and the received mail is a junk mail or chain based on the URL extracted by the extraction means. An identification means for performing identification processing as to whether or not it is mail; and a deletion means for performing deletion processing without accumulating in the mailbox addressed to the user for the received mail identified as spam mail or chain mail by the identification means; If the URL extracted by the extraction means is an unconfirmed URL, a monitoring process for a predetermined time is started for a received mail including the unconfirmed URL in the text, and the unconfirmed URL is included in the text within the predetermined time. The received mail included in is stored in the temporary storage area, and the number of received messages is counted. Obtaining case, to provide a mail server, further comprising determining monitoring means that the mail spam or chain mail including unconfirmed URL in the text.
[0034]
  In addition, the present invention examines whether or not a URL is included in the mail text of mail received via a network in a mail server of a mobile phone, and if it is included, an extraction process for extracting the URL, and extraction by the process An identification process for identifying whether or not the received mail is spam mail or chain mail based on the URL, and the received mail identified as spam mail or chain mail by the processing is not stored in the mailbox addressed to the user. If the URL extracted in the extraction step is an unconfirmed URL, monitoring for a predetermined time with respect to a received mail containing the unconfirmed URL in the text Processing is started, and received emails containing unconfirmed URLs in the text are temporarily stored within the predetermined time. Stores in the storage area, counts the number of received messages, and if the number of received messages exceeds the specified number after a lapse of a predetermined time, executes processing to determine if the mail containing unconfirmed URL in the text is spam or chain mail Provide an automatic spam mail disposal program.
[0052]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a configuration diagram of a system that executes an automatic mail disposal method and a program according to an embodiment of the present invention. This system includes a mail server 1, a mobile phone terminal 2 used by a user, the Internet 3, and a telephone line 4. The basic system configuration is the same as that of the prior art, and is indicated by the same symbol.
[0053]
The mail server 1 is a server device that executes the automatic mail disposal method according to the embodiment of the present invention. A program (automatic mail disposal processing unit in FIG. 1) for realizing the automatic mail disposal method by computer processing is provided. Including mail server software is installed and executed by the processor. A plurality of mail servers 1 are connected to the Internet 3 to perform mail transmission / reception processing. A plurality of terminals 2 are connected to the mail server 1 through a telephone line 4. Here, since the terminal 2 is a mobile phone in particular, the telephone line 4 is configured by a predetermined communication system including a wireless communication network. The terminal 2 includes mail software having a function of creating / transmitting / receiving mail. In a state where the terminal 2 is connected to the mail server 1, the terminal 2 can acquire mail addressed to the user stored in the mail server 1.
[0054]
In FIG. 1, the program provided in the mail server 1 includes, as constituent elements, an http filter 11, a junk mail URL storage unit 12, a chain mail URL storage unit 13, an authentication URL storage unit 14, an unconfirmed URL storage unit 15, and a user mailbox. Part 16. The mail server 1 performs a known mail delivery process and other known processes.
[0055]
Each of the storage units 12 to 16 is a module for storing information in a memory area of a storage device (not shown) included in the mail server 1, and manages each information column and mail box secured on the memory ( Later). The user mailbox unit 16 manages a mailbox that accumulates mail addressed to the user, and manages mail rejection designation information that is initial setting information by the user when using the mail system.
[0056]
In this specification, junk mail refers to many mails from the same sender. Chain mail refers to mail of the same content transmitted from many different senders.
[0057]
This method is characterized in that the mail server 1 checks the homepage address (URL) written in the mail text for the received mail addressed to the user. The home page address (Web page address) is described by a URL. A URL (Uniform Resource Locator) is a resource indicator on the network. This is described in a format such as “http://www.xyz.com”. “Http:” is a designation of a protocol used for accessing a resource, and in this case, the http protocol is used. “Www.˜” is a unique designation of the address (and path) of the resource on the network.
[0058]
In this method, the mail server 1 includes an http filter 11 that performs the URL check process. The http filter 11 checks whether or not a URL is included in the mail body of the mail received by the mail server 1 via the Internet 3, and if included, extracts the URL character string as information (note that This process is not a process of extracting the character string itself). In this method, the URL extracted from the received mail text is used as an identification condition to identify whether it is a junk mail or a chain mail, and the mail is automatically disposed according to the result of this identification.
[0059]
In this method, the mail server 1 is provided with a spam mail URL storage unit 12, a chain mail URL storage unit 13 and the like that store the URL extracted from the mail text by the http filter 11. Each of the storage units 12, 13 and the like uses the extracted URL to identify whether the received mail is junk mail or chain mail. The corresponding URL written in the mail identified as spam mail or chain mail by this identification processing is stored and managed in the spam mail URL storage section 12 and the chain mail URL storage section 13, and is troublesome for subsequent received mail. It is used as a condition for identifying whether it is an email or the like. This identification condition is updated at any time as the mail is received.
[0060]
Each of the storage units 12, 13, etc. of the mail server 1 compares the received mail with the URL stored as the identification condition to determine whether the mail is junk mail, chain mail or other mail. Identify.
[0061]
When the mail server 1 receives the mail, the mail server 1 sends the received mail corresponding to the rejection condition set by the rejection designation to the mailbox in the user mailbox 16 based on the rejection designation information (described later) about the received mail by the user. Automatic deletion without storing and saving.
[0062]
In this way, in this method, the number of mails that can be received from the same sender in a day is determined by referring to the URL of the received mail, identifying spam mail, chain mail, etc., and automatically deleting the mail. The mail reception restriction process is realized without the need for the conventional setting process. In addition, there is no need to perform setting processing for restricting mail reception from those other than the known sender.
[0063]
In this method, the user (mail recipient) sets the above-described mail rejection designation in the mail server 1 when he / she wants to reject the reception of the junk mail or the chain mail. In the mail server 1, the setting of the above-mentioned mail rejection designation and the mail that reaches the user are stored and managed in the user mailbox section 16 for each user.
[0064]
FIG. 6 is a diagram illustrating information managed by the user mailbox unit 16. The user mailbox unit 16 includes a transmission box 161 that is a mail box for storing mail addressed to the user until it is transmitted to the user terminal 2, and spam mail, chain mail, and mail with a URL written in the mail body ( Hereinafter, mail rejection designation information, which is setting information for rejection designation for “URL mail”), is managed. As mail rejection designation information, a spam mail rejection designation field 162, a chain mail rejection designation field 163, and a URL mail rejection designation field 164 are provided. This method is also characterized in that a user mailbox section 16 having these three setting fields and a transmission box as elements is provided.
[0065]
Since the URL mail rejection designation is a rejection to a mail including a URL in the mail body, it is possible to specify a rejection including spam mail and chain mail rejection.
[0066]
FIG. 7 shows an example of a setting screen for setting the rejection designation on the user terminal 2. In FIG. 7, setting registration is performed by checking the YES / NO item as a refusal designation for each of junk mail, chain mail, and URL mail. Through such a setting screen, setting processing is performed for each of the refusal designation columns 162 to 164 in the user mailbox section 16. In this method, the user can set a refusal setting for enabling automatic deletion processing such as junk mail only by setting the above three items.
[0067]
FIG. 2 shows the configuration of the junk mail URL storage column managed by the junk mail URL storage unit 12. The spam mail URL storage field is composed of several URL storage fields. In the spam mail URL storage field, URLs (hereinafter referred to as “spam mail URLs”) written in mails that have been identified as spam mails in the mail server 1 in the past are stored.
[0068]
FIG. 3 shows a configuration of a chain mail URL storage column managed by the chain mail URL storage unit 13. The chain mail URL storage field is composed of several storage fields. In the chain mail URL storage field, URLs (hereinafter referred to as “chain mail URLs”) previously stored in mails identified as chain mails in the mail server 1 are stored.
[0069]
Mail received by the mail server 1 and whose URL is written in the mail text is not limited to spam mail and chain mail. For example, the URL may be written in a mail such as a message from a manufacturer or an administrator of the mail server 1. In this method, the mail server 1 includes an authentication URL storage unit 14 that is an area for storing and managing a URL authenticated by the administrator of the mail server 1 (hereinafter, “authentication URL”). The authentication URL storage unit 14 stores URLs authenticated by the administrator of the mail server 1 other than URLs included in spam mails and the like. The storage unit 14 can permit the reception of mails including URLs from the manufacturer or the administrator of the mail server 1 separately from spam mails or chain mails. It is possible to receive as usual.
[0070]
The mail server 1 refers to the authentication URL managed by the authentication URL storage unit 14 for the received mail, identifies that the mail in which the authentication URL is written is not spam, etc., and sends it to the user mailbox 16. Store. This method is also characterized in that processing using this authentication URL is performed.
[0071]
Next, in this method, when the mail server 1 finds the description of the unconfirmed URL in the received mail, the mail server 1 stores this URL, monitors the subsequent received mail, and the mail in which the unconfirmed URL is described is spam mail. An unconfirmed URL storage unit 15 is provided for performing identification processing to determine whether or not. Here, the unconfirmed URL refers to a URL that is not registered as information such as a spam mail URL, a chain mail URL, or an authentication URL in the mail server 1 when the mail is received. The unconfirmed URL storage unit 15 manages an unconfirmed URL confirmation field as referred to FIG.
[0072]
When the http filter 11 and the unconfirmed URL storage unit 15 of the mail server 1 discovers a new unconfirmed URL in the body of the received mail, the unconfirmed URL is temporarily stored in the unconfirmed URL storage column and includes the unconfirmed URL. The received mail is stored with a temporary storage area, and the unconfirmed URL is described by monitoring whether or not the unconfirmed URL is described for the received mail for a predetermined period of time after this point. An identification process is performed to determine whether the mail is junk mail, chain mail, or normal mail. As a result of the identification processing, when it is identified as spam mail, it is stored in the storage field of the spam mail URL storage unit 12, and when it is identified as chain mail, it is stored in the storage field of the chain mail URL storage unit 13, If identified, it is stored in the transmission box 161 of the user mailbox 16. With these, mails with unconfirmed URLs are automatically dealt with. As a result of the monitoring process, for the mail identified as spam mail or chain mail, the received mail stored in the temporary storage area is deleted based on the mail rejection designation setting.
[0073]
FIG. 5 shows the structure of the unconfirmed URL confirmation column. An information area is secured for each unconfirmed URL. For each unconfirmed URL, information such as the URL character string 151, the sender mail address 152, and the number of accesses 153 is managed. When the unconfirmed URL storage unit 15 finds the received mail in which the unconfirmed URL is described, the unconfirmed URL storage unit 15 secures such an information area and performs a monitoring process for a predetermined time after that point. In the monitoring process, when a mail in which the same URL as the corresponding unconfirmed URL is written in the text is received within a certain time, the received mail is stored in the temporary storage area, and the corresponding unconfirmed URL 151 in the unconfirmed URL storage column is stored. Update information. At that time, referring to the sender mail address for the received mail, a record is provided for each sender mail address 152, and the number of accesses 153, which is the number of received mails, is counted. When a different unconfirmed URL is newly extracted, a next unconfirmed URL 151 information column is provided and stored for monitoring.
[0074]
For example, in FIG. 5, 28 mails from the sender “aaa@bbb.com” are received within a predetermined time period as mails including the unconfirmed URL 1 “www.abc.co.jp”. This indicates that 12 emails have been received from "ccc@ddd.co.jp".
[0075]
The unconfirmed URL storage unit 15 determines whether or not the mail including the relevant unconfirmed URL is a junk mail or a chain mail with reference to the management information of the relevant unconfirmed URL after a predetermined time has passed in the monitoring process. When the number of accesses 153 exceeds a predetermined number for a certain sender mail address 152 with respect to a certain unconfirmed URL, it is determined that it is a spam mail. If there are a plurality of sender mail addresses 152 and the combined number of accesses 153 exceeds a predetermined number, it is determined that the mail is a chain mail.
[0076]
The mail server 1 then stores the unconfirmed URLs determined as spam URLs or chain mail URLs in the above processing as the spam mail URLs or chain mail URLs, respectively, in the storage fields of the storage units 12 and 13. It is stored and additionally registered as URL information which becomes an identification condition in the spam mail or chain mail identification process. Each of the storage units 12 and 13 updates the identification condition in the identification process using the additionally registered URL information, and performs the subsequent identification process using the updated identification condition.
[0077]
Next, operations of the mail server 1 that executes the mail automatic disposal method and the program according to the embodiment of the present invention will be described with reference to the flowcharts of FIGS. The subject of the following processing is the mail server 1. In FIG. 8, first, when the mail server 1 receives mail addressed to the user via the Internet 3, the mail server 1 passes the received mail through the http filter 11 (step S101), and a URL (homepage address) is written in the mail text. It is checked whether or not (step S102). Specifically, first, when the character string “http” is detected and the “http” character string is included in the mail body, the URL character string including the “http” character string and the subsequent character string is included. The confirmation processing after step S104 is sequentially performed. When the mail does not include the URL character string, the received mail is stored in the transmission box 161 of the user mailbox 16 (step S103).
[0078]
Regarding the received mail including the URL character string in the mail body, first, it is checked by comparing whether there is a match among the spam mail URLs stored in the spam mail URL storage unit 12 (step S104).
[0079]
If there is a matching URL (step S105 YES), it is determined that the received mail is a junk mail. Next, each of the junk mail rejection designation column 162 and the URL mail rejection designation column 164 of the user mailbox 16 is displayed. The rejection designation is confirmed (steps S106 and S109), and if there is no rejection designation, it is stored in the transmission box 161 (step S112). When there is a refusal designation, each unit performs automatic deletion processing on the received mail (steps S108 and S111).
[0080]
If there is no matching URL (NO in step S105), then it is checked by comparing whether there is a matching chain mail URL stored in the chain mail URL storage unit 13 (steps S113 and S14).
[0081]
If there is a matching URL (YES in step S114), it is determined that the received mail is a chain mail, and each rejection designation in the chain mail rejection designation field 163 and the URL mail rejection designation field 164 of the user mailbox 16 is set. Confirmation is made (steps S115 and S118), and if there is no refusal designation, it is stored in the transmission box 161 (step S121). If there is a refusal designation, the received mail is automatically deleted (steps S117 and S120).
[0082]
If there is no matching URL (step S114, NO, go to FIG. 8), next, it is confirmed by comparing whether there is a matching authentication URL stored in the authentication URL storage unit 15 (FIG. 9, step). S201).
[0083]
If there is a matching URL (step S202: YES), the URL is determined to be an authentication URL and stored in the transmission box 161 (step S203).
[0084]
If there is no matching URL (NO in step S202), it is determined that the URL is an unconfirmed URL, and an information area for the unconfirmed URL is secured and stored in the storage column of the unconfirmed URL storage unit 15 (step S204). ). Then, for this unconfirmed URL, a monitoring process for a predetermined time is performed (step S205). In this monitoring process, when a mail containing the same URL as the unconfirmed URL is received within a predetermined time, the information in the reserved unconfirmed URL information area (sender mail address 152, number of accesses 153, etc.) ). When a mail containing another unconfirmed URL is received, a separate information area is secured in the unconfirmed URL storage column and an independent monitoring process for a predetermined time is started. In this monitoring process, the received mail including each unconfirmed URL to be monitored is temporarily accumulated in the temporary storage area secured by the unconfirmed URL storage unit 15 within the predetermined time.
[0085]
After monitoring the unconfirmed URL for a certain period of time, the number of accesses 153 in the unconfirmed URL storage field is referred to. If the number of accesses 153 exceeds a predetermined number (step S206 YES), the mail containing the unconfirmed URL is a spam mail or chain Identify it as either email.
[0086]
For the received mail including the unconfirmed URL identified as described above, if the sender mail address 152 and the number of accesses 153 in the unstored URL confirmation column are referred to, The mail containing the URL is determined to be a spam mail, and this URL is newly registered in the spam mail URL storage unit 12 as a spam mail URL (step S209).
[0087]
If the number of mails is greater than a predetermined number from different senders, it is determined that the mail including this URL is a chain mail, and this URL is newly registered in the chain mail URL storage unit 13 as a chain mail URL ( Step S212).
[0088]
If it is determined that the message is spam, the spam mail rejection designation field 162 and URL mail rejection designation field 164 of the user mailbox 16 are checked for rejection (steps S210 and S215). It is deleted (steps S211, S217), and if it is not rejected, it is stored in the transmission box 161 (step S218).
[0089]
Similarly, when it is determined that the mail is a chain mail, the chain mail rejection designation field 163 and the URL mail rejection designation field 164 of the user mailbox section 16 are confirmed (steps S213 and S216). If it is deleted (steps S214 and S217), it is stored in the transmission box 161 if not (step S218). This is the end of the operation.
[0090]
The embodiment of the present invention has been described above. The above-described embodiment shows an example of a preferred embodiment of the present invention, and the present invention is not limited thereto, and various modifications can be made without departing from the scope of the invention. .
[0091]
【The invention's effect】
As is apparent from the above description, according to the present invention, it is checked whether or not a URL is written in the text of the received mail in the mail server of the mobile phone, and whether or not it is a junk mail or the like using this URL as an identification condition. Therefore, mails with URLs (homepage addresses) written in the text (for example, URLs listed as advertisements or solicitations) are automatically identified and automatically disposed of as spam. , Reception to the user's terminal can be prevented.
[0092]
In addition, by storing and managing URLs that have been previously determined to be URLs included in spam mails in the mail server and identifying received mails using this URL, the received mails can be instantly sent as spam mails, etc. It can be identified.
[0093]
Further, since the URL information for identification processing such as spam mail is automatically updated in the mail server, there is no need for the user to perform detailed setting or re-registration processing.
[0094]
In addition, when the user uses the mail system, the initial setting process requires three settings in the refusal designation field, which requires less time and does not require a troublesome registration process.
[0095]
In addition, by providing an authentication URL storage unit, even if the URL is written in the body of a mail from a mail server administrator or manufacturer, it can be distinguished from spam mail. It can be delivered to the user who needs it without deleting it.
[0096]
In addition, by providing an unconfirmed URL storage unit, even if an unconfirmed URL is written in the body of the received mail, it is possible to identify whether the URL is spam or the like, and handling processing such as automatic disposal and accumulation It can be performed. It is also possible to deal with a case where a sender such as a junk mail changes a sender mail address or sends a mail whose URL is changed in the text.
[Brief description of the drawings]
FIG. 1 is a basic configuration diagram of a system for executing a spam mail automatic disposal method and a program according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a spam mail URL storage column.
FIG. 3 is a configuration diagram of a chain mail URL storage column.
FIG. 4 is a configuration diagram of an authentication URL storage field.
FIG. 5 is a configuration diagram of an unconfirmed URL storage field.
FIG. 6 is a configuration diagram of management information in a user mailbox section 16;
FIG. 7 is an example of a setting screen for each refusal designation on the user terminal 2;
FIG. 8 is a flowchart showing the operation of the spam mail automatic disposal method and program according to the embodiment of the present invention.
FIG. 9 is a flowchart (continuation of FIG. 8) showing the operation of the junk mail automatic disposal method and program in the embodiment of the present invention.
FIG. 10 is a basic configuration diagram of a conventional system.
FIG. 11 is a configuration diagram of mail reception condition information 5 used in the spam mail automatic disposal method in the mail server 1 of the prior art.
FIG. 12 is a configuration diagram of automatic mail deletion setting information 6 in the conventional mail server 1;
FIG. 13 is a diagram showing a state of mail transmission / reception in a conventional system.
FIG. 14 is a setting example of automatic mail deletion;
15 is an example of a mail reception list 67. FIG.
[Explanation of symbols]
1 Mail server
2 User's mobile phone terminal
3 Internet
4 telephone lines
11 http filter
12 Spam mail URL storage
13 Chain mail URL storage
14 Authentication URL storage
15 Unconfirmed URL storage
16 User mailbox
151 Unconfirmed URL
152 Sender email address
153 Access count
161 Outbox
162 Spam mail rejection designation field
163 Chain mail rejection designation field
164 URL mail rejection designation field
5 Mail reception condition information (prior art)
6 Mail automatic deletion setting information (prior art)
7 Mail sender and sender terminal
8 Sender mail server
51 Same sender conditions
52 Maximum size conditions
53 Known sender list
61 Sender email address
62 Setting information for automatic deletion
63 Maximum number of emails that can be received
64 Delete notification settings
65 Sender unknown email settings
66 Setting of sender unknown mail
67 Mail receiving list
68 Number of emails received per day / sender

Claims (24)

For mail received via the network on the mobile phone mail server,
Check if the URL is included in the email text, and if so, extract the extraction process,
An identification step of performing identification processing as to whether or not the received mail is spam mail or chain mail based on the URL extracted in the step;
A Junk mail automatic disposal how Yusuke a deletion step of deleting process without storing in the mailbox addressed to the user for incoming mail identified as spam or chain mail as該工, a,
When the URL extracted in the extraction step is an unconfirmed URL, a monitoring process for a predetermined time is started for a received mail including the unconfirmed URL in the text, and the received mail including the unconfirmed URL is included in the text within the predetermined time. Is stored in the temporary storage area, and the number of received messages is counted. If the number of received messages exceeds the predetermined number after the predetermined time has elapsed, it is determined that the mail including the unconfirmed URL in the text is spam mail or chain mail. A spam mail automatic disposal method, further comprising a monitoring step . In the monitoring step, when the received mail stored in the temporary storage area is a mail exceeding a predetermined number of received messages from the same sender, the step of determining that the mail including the unconfirmed URL in the text is a spam mail. The spam mail automatic disposal method according to claim 1, further comprising : In the monitoring step, when the received mail stored in the temporary storage area is a mail exceeding a predetermined number of received messages from different senders, a step of determining that the mail including the unconfirmed URL in the text is a chain mail. The spam mail automatic disposal method according to claim 1, wherein the spam mail automatic disposal method is provided. The method further includes the step of automatically registering the URL included in the mail determined to be spam mail or chain mail as an identification condition in the identification process and automatically updating the identification condition as a result of the monitoring process. The method for automatically disposing of junk mail according to any one of claims 1 to 3 . The mail server registers and manages the URL included in the mail that has been identified as spam mail or chain mail in the past as URL information that serves as an identification condition in the identification process,
In the identification step,
The URL extracted by the extraction step, the comparison with the URL information, if it matches, any one of claims 1 to 4, characterized in that identifying the received mail as spam is mail or chain letters The junk mail automatic disposal method described in. In the mail server, as user setting information, holds a setting of mail rejection designation as to whether or not to delete spam mail or chain mail based on the result of the identification process,
6. The spam mail automatic disposal according to any one of claims 1 to 5 , wherein when the received mail is identified as spam mail or chain mail, the deletion processing is executed based on the mail rejection designation setting. Method. In the mail server, as the setting of the mail rejection designation, three settings of a spam mail rejection designation, a chain mail rejection designation, and a URL mail rejection designation which is a rejection designation for a mail including a URL in the body are held, 7. The spam mail automatic disposal method according to claim 6, wherein the deletion process is executed based on a setting. The mail server registers and manages the URL authenticated by the mail server administrator, and the received mail containing the URL in the text is distinguished from the spam mail or chain mail in a mailbox addressed to the user. The spam mail automatic disposal method according to any one of claims 1 to 7 , further comprising a storing step. Whether the URL is included in the mail text received via the network Extraction means to check whether and if included,
  Identification means for performing identification processing whether or not the received mail is spam mail or chain mail based on the URL extracted by the extraction means;
  A deletion means for deleting the received mail identified as spam mail or chain mail by the identification means without accumulating in the mailbox addressed to the user, and a mail server comprising:
  When the URL extracted by the extraction means is an unconfirmed URL, a monitoring process for a predetermined time is started for a received mail including the unconfirmed URL in the text, and the received mail including the unconfirmed URL is included in the text within the predetermined time. Is stored in the temporary storage area, and the number of received messages is counted. If the number of received messages exceeds the predetermined number after the predetermined time has elapsed, it is determined that the mail including the unconfirmed URL in the text is spam mail or chain mail. A mail server, further comprising a monitoring means. When the received mail stored in the temporary storage area is a mail exceeding a predetermined number of received messages from the same sender, the monitoring unit determines that the mail including the unconfirmed URL in the text is a spam mail. The mail server according to claim 9. When the received mail stored in the temporary storage area is a mail exceeding a predetermined number of received messages from different senders, the monitoring unit determines that the mail including the unconfirmed URL in the text is a chain mail. The mail server according to claim 9 or 10. It further comprises an automatic updating means for automatically updating the identification condition by additionally registering the URL included in the mail determined to be spam mail or chain mail by the monitoring means as the identification condition at the time of the identification processing. The mail server according to any one of claims 9 to 11, characterized in that: Register and manage the URL included in the mail that has been identified as spam mail or chain mail in the past as URL information that serves as an identification condition in the identification process,
  The identification means includes
  13. The URL extracted by the extraction means is compared with the URL information, and if the URL matches, the received mail is identified as spam mail or chain mail. The mail server described in. As user setting information, the setting of the mail rejection designation whether to enable the deletion processing of spam mail or chain mail based on the result of the identification processing is retained,
  14. The method according to claim 9, wherein when the received mail is identified as spam mail or chain mail, the deletion unit executes the deletion process based on the setting of the mail rejection designation. Mail server. The mail rejection designation setting includes three settings: spam mail rejection designation, chain mail rejection designation, and URL mail rejection designation that is a rejection designation for a mail including a URL in the text. The mail server according to claim 14, wherein the deletion process is executed based on a setting. A storage means for registering and managing a URL authenticated by the administrator of the mail server, and storing the received mail including the URL in the text in a mailbox addressed to the user separately from the spam mail or chain mail. The mail server according to any one of claims 9 to 15, further comprising: For mail received via the network on the mobile phone mail server,
Check whether the URL is included in the email body, and if so, extract processing to extract,
An identification process for identifying whether the received mail is a junk mail or a chain mail based on the URL extracted in the process;
A Junk mail automatic disposal program Ru is executed and deletion processing for deleting without accumulation in the mailbox addressed to the user for incoming mail identified as spam or chain letters by said process, to the computer,
When the URL extracted in the extraction step is an unconfirmed URL, a monitoring process for a predetermined time is started for the received mail including the unconfirmed URL in the text, and the reception including the unconfirmed URL is included in the text within the predetermined time. Mail is stored in the temporary storage area, the number of received messages is counted, and after the predetermined time has elapsed, if the number of received messages exceeds the predetermined number, the mail including the unconfirmed URL in the text is determined to be spam mail or chain mail. An unsolicited email automatic disposal program characterized by causing a computer to execute processing to be performed . In the monitoring process, if the received mail stored in the temporary storage area is a mail exceeding a predetermined number of received messages from the same sender, the computer is caused to execute a process for determining that the mail including the unconfirmed URL is a spam mail. 18. The spam mail automatic disposal program according to claim 17, In the monitoring process, if the received mail stored in the temporary storage area is a mail exceeding a predetermined number of received messages from different senders, the computer is caused to execute a process for determining that the mail including the unconfirmed URL is a chain mail. 19. The spam mail automatic disposal program according to claim 17 or 18 . As a result of the monitoring process, the URL included in the mail determined to be spam mail or chain mail is additionally registered as an identification condition in the identification process, and the process of automatically updating the identification condition is executed on the computer The junk mail automatic disposal program according to any one of claims 17 to 19 , characterized by: The mail server registers and manages the URL included in the mail that has been identified as spam mail or chain mail in the past as URL information that serves as an identification condition in the identification process,
In the identification process,
The URL extracted by the extraction process, from the comparison with the URL information, if it matches, claim 17, characterized in that to execute the process of identifying that said received mail spam or chain letters on a computer The spam mail automatic disposal program according to any one of 20 . In the mail server, as user setting information, holds a setting of mail rejection designation as to whether or not to delete spam mail or chain mail based on the result of the identification process,
The computer system according to any one of claims 17 to 21 , wherein when the received mail is identified as spam mail or chain mail, a process of performing the deletion process based on the setting of the mail rejection designation is executed by a computer. Junk mail automatic disposal program. The mail rejection designation setting includes three settings of spam mail rejection designation, chain mail rejection designation, and URL mail rejection designation that is a rejection designation for mail including a URL in the text, and the deletion is performed based on the settings. 23. The spam mail automatic disposal program according to claim 22, which causes a computer to execute processing for processing. In the mail server, the URL authenticated by the mail server administrator is registered and managed, and the received mail including the URL in the text is stored in a mailbox addressed to the user separately from the spam mail or chain mail. The spam mail automatic disposal program according to any one of claims 17 to 23 , which causes a computer to execute processing.

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