| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic data transmission system capable of efficiently transmitting many electronic data. SOLUTION: The electronic data transmission system is provided with a main server 30 where electronic mail items are sorted on the basis of server names, a maximum session number permitted in a receiver side mail server 40 is acquired, the receiver side mail server with the same server name among the sorted electronic mail items is selected, an IP address of the receiver mail server 40 is acquired from a DNS server, a session is established by using the maximum session number of the receiver mail server 40 for an upper limit, a transmission server 33 transmits electronic mail to the receiver mail server 40 on the basis of the session established between the transmission server 33 and the receiver mail server 40.
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