| 摘要 |
It is provided a mail transfer system including a mail gateway, a network and a data storage area. The mail gateway, in a case where destinations of the received electronic mail include a plurality of destinations accommodated in the same mail transfer server, generate a piece of first mail management information including the plurality of destinations, and store mail data linking the generated piece of first mail management information and a body of the electronic mail to each other in the data storage area. The mail gateway, in a case where the destinations of the received electronic mail include one destination accommodated in the same mail transfer server, generate mail management information, which includes the each of the destinations, and store mail data linking each of a plurality of pieces of the generated mail management information and a body of the electronic mail in the data storage area.
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