Patent ID: 7660858
Filing Date: 2010-02-09
Classification: H04L

Abstract:
1. A computer program product having computer instructions, recorded on a computer readable storage medium, for enabling a computer executing the computer instructions to perform mail distributing operations comprising: recording a date and time when a plurality of mails have been successfully transmitted previously per mailing address; selecting a first group of the mailing addresses to which the mails have been successfully transmitted previously on the date and time within a predetermined selecting period by making reference to said recording when a mail distributing apparatus is commanded to distribute mails to a plurality of addresses; transmitting mails to the first group of the mailing addresses selected by said selecting at first, and after that, transmitting mails to a second group of the addresses not selected by said selecting; recording reply times taken to receive fail messages for the each of the mails that have not been successfully transmitted to the first and second group of mailing addresses; measuring a fail rate which is a ratio of the number of received fail messages to the number of mails transmitted to the second group of addresses; and determining an average reply time based on said recorded reply times for the addresses in the second group of addresses, wherein said transmitting further comprises re-transmitting mails to the second group of addresses at periods determined by multiplying the fail rate by a value which is the average reply time divided by a predetermined acceptable number of fail messages to be received within the average reply time for the second group of mailing addresses.