METHOD AND DEVICE FOR PROCESSING ELECTRONIC MAIL UNDESIRABLE FOR USER

摘要

Electronic mails are received and the received electronic mails are classified according to relay path information included in the headers before being stored. For each category, a judgment is made based on a judgment rule that at least includes criteria (1) the number of received mails per unit time is equal to or larger than a first predetermined value and (2) the number of mails with an invalid destination address is equal to or larger than a second predetermined value. For electronic mails belonging to a category where the number of judgment rule items meeting the criteria is equal to or larger than a predetermined number, a mail processing is executed in which (a) the delivery to the user is blocked and (b) a pseudo error message reproducing an undelivered mail on a pseudo basis is sent to the sender.