Electronic mail delivery refusal method, electronic mail delivery refusal device and storage medium recording a program enabling a computer to execute the method

摘要

A provider device comprises a delivery refusal server. The delivery refusal server further comprises a computer identification information extracting unit and a delivery refusal judging unit. The computer identification information extracting unit extracts computer identification information identifying a computer in a network from the text of an electronic mail addressed to a user. The delivery refusal judging unit judges whether the electronic mail should be delivered, based on the extracted computer identification information. Thus, the delivery of electronic mail that the user does not want, can be effectively refused.