Patent ID: 7818383

Claim:
An e-mail server device, which stores a received e-mail in a storing region of a receiver according to a destination email address of the received e-mail, comprising: an address determining means for determining whether the destination e-mail address of the received e-mail is an original e-mail address of the receiver or an extended e-mail address, wherein the extended e-mail address is generated by adding an extension name to the original e-mail address; an e-mail storing means for storing the received e-mail in the storing region of the receiver if the received e-mail is determined to be the extended address by said the address determining means and the extended address is registered in an extended address list wherein the extended address is registered in the extended address list in relation to the original e-mail address and a sender's e-mail address; wherein said e-mail storing means comprises an accepting means for accepting the received e-mail determined to be the original e-mail address comprising: a first list in which at least one sender from who an e-mail may be received is registered; a second list in which at least one sender from who an e-mail must not be received is registered; a storing means for storing the received e-mail in the storing region of the receiver if the received e-mail address is the original e-mail address and a sender of the received e-mail has been registered in said first list; a rejecting means for rejecting storing the received e-mail in the storing region of the receiver if the received e-mail address is the original e-mail address and the sender of the received e-mail has been registered in said second list; an e-mail receiving means for, if the sender of the received e-mail has been registered in neither said first list nor said second list, returning a BUSY status at first, and receiving the e-mail only if the received e-mail comes from the sender again a sending means for sending a confirmation e-mail to the sender of the received e-mail if the received e-mail comes from the sender again and if the received e-mail address is the original e-mail address and the sender of the e-mail has been registered in neither said first nor said second list; a storing means for storing the received e-mail in the storing region of the receiver if said sending means for sending the confirmation e-mail receives a response from the sender in a method described in the confirmation e-mail.