CN1490737A

CN1490737A - Method for preventing e-mail refuse

Info

Publication number: CN1490737A
Application number: CNA021375267A
Authority: CN
Inventors: 海林; 林海
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-18
Filing date: 2002-10-18
Publication date: 2004-04-21

Abstract

The method is as the follows. A friend list is set up for each mailbox on e-mail server and to record e-mail address of letter sender welcome by the box. When e-mail server receives a letter, whether the address of letter sender is listed in the list or not is judged and the letter is posted into the box directly if it is or otherwise to be stored in the server temporarily. The letter sender is informed by e-mail to confirm the letter and the letter is posted into the box as well as the address is recorded in the list if the confirmation signal is received or otherwise the temporarily stored letter is discarded if the confirmation signal is not received at limited time.

Description

A kind of method that prevents SPAM

Technical field the present invention relates to Email, is a kind of method that prevents SPAM.

The background technology Email is widely used as the exchange way of communicating by letter easily, becomes the part that we work and live.People when enjoying the many advantages of Email, often also by receive increasing SPAM worry.The method that tackles SPAM at present is a filtering technique.Be the character string that the recipient specifies one group of unwelcome sender's e-mail address or specified conditions, be used to filter out spam.Consult:

United States Patent (USP) 6023723

Canadian Patent 2282502

PCT patent WO 98/00787

PCT patent WO 98/37680

PCT patent WO 99/32985

PCT patent WO 99/37066

PCT patent WO 99/67731

Filtering technique can stop the part spam really, is widely used.But its shortcoming also is conspicuous: (1) recipient in advance and do not know spammer's e-mail address, and, the frequent conversion sender's of spammer e-mail address, even more this does not just stay sender's e-mail address.(2) judge whether to play limited effect in actual applications by spam by specific character string (certain word for example in mail header, occurring).(3) filtering technique needs the Email recipient constantly to pay work to set filtercondition.

Summary of the invention the present invention includes following content:

1) on e-mail server, sets up friend's inventory, write down addresser's e-mail address that this mailbox is welcome for each e-mail box.

2) receive when letter when e-mail server, whether the e-mail address of judging the addresser by server is in friend's inventory of receiver:

If then directly delivering mail arrives receiver's mailbox;

If not, then will write letters and temporarily leave server in, and use the email notification addresser, and ask the addresser to confirm its letter.Receive that when server the letter that is about to keep in behind addresser's the affirmation signal is delivered to receiver's mailbox, and this addresser's e-mail address is recorded in friend's inventory of receiver.If server can not receive addresser's affirmation signal in the time limit of setting (such as 10 days), then the letter deletion of being kept in is abandoned.

3) special confirmation signal of design makes the addresser to answer said confirmation signal with manual mode, and can not automatically reply with computer program.Method one, server is additional little image file in the Email that the request of sending is confirmed, image content is that a numeral or character are scurried, and requires the other side to scurry with the numeral that shows on the image or character that input when replying confirmation letter gets final product at the mail matter topics place as confirmation signal.Method two, server provides a URL and connects in the Email that the request of sending is confirmed, and require the other side to click the specific WEB webpage of this URL access server side, on webpage, show a little image, image content is that a numeral or character are scurried, and numeral or character that visitor's input imagery on webpage is shown are scurried as confirmation signal.On the said little image, can add and a bit disturb pixel in these two kinds of methods, this is the method that the antagonism of comparative maturity automatically replies program.

As above said, key of the present invention is no longer to judge whether spam from Mail Contents, but at the sending method of spam.Spam all is to send with mass-sending instrument magnanimity, and often forges originator's e-mail address.The said method of the present invention requires a manual affirmation of strange letter person letter for the first time.Concerning the spammer, the instrument that all magnanimity send automatically is no longer valid, has so also just lost the basis that this spam with low cost of posting a letter at a high speed spreads unchecked.For popular, the present invention must confirm when requiring the user to send e-mails to friend for the first time, after, because this user has been recorded in friend's inventory of the other side, follow-up Email can go directly the other side.

Embodiment is set up following function on e-mail server:

A) set up its friend's inventory for each E-mail.

B) differentiate sender's e-mail address during mail arrives whether in friend's inventory of recipient.

C) delivery friend's letter.

D) temporarily store stranger's letter.

E) strange letter is generated and stored a confirmation signal in advance.

F) Email of confirming to the strange letter person request of sending.

G) judge whether confirmation signal is correct after receiving confirmation letter.

H) deliver the letter that process is confirmed.

I) will be recorded in friend's inventory of receiver through the letter people's that confirms e-mail address.

J) delete expired and letter that do not obtain confirming.

Alternatively, set up the letter first time that the interactive stranger of affirmation is come in the WEB website at server side:

A) interactive mode is accepted the user and is imported a confirmation signal on webpage.

B) judge whether confirmation signal is correct, if original temporary mail of correct then informing E-mail server delivery and record are write letters people's e-mail address in corresponding friend's inventory.

Claims

1. method that prevents SPAM is characterized in that:

On e-mail server, set up friend's inventory, write down addresser's e-mail address that this mailbox is welcome for each e-mail box;

When e-mail server is received when letter, whether the e-mail address of judging the addresser by server is in friend's inventory of receiver: if then directly delivering mail arrives receiver's mailbox; If not, then will write letters and temporarily leave server in, and use the email notification addresser, and ask the addresser to confirm its letter;

Receive that when server the letter that is about to keep in behind addresser's the affirmation signal is delivered to receiver's mailbox, and this addresser's e-mail address is recorded in friend's inventory of receiver; If server can not receive addresser's affirmation signal in the time limit of setting, then the letter deletion of being kept in is abandoned.