| 摘要 |
PROBLEM TO BE SOLVED: To provide an E-mail transmission/reception system capable of transmission/reception of E-mail using one or more alias addresses different from an original E-mail address only by normal E-mail operation with a portable telephone. SOLUTION: The E-mail transmission/reception system includes: a first receiving means 202 for receiving E-mail addressed to a first domain; a first conversion means 210 for restoring an address B' to an address B before change and converting a transmitter address A into an alias address PAi; a first transfer means 214 for transmitting the E-mail; a second receiving means 220 for receiving E-mail addressed to a second domain; a second transmitter authentication means 222 for determining whether or not a transmitter address D is a proper address; a second conversion means 226 for converting a destination address PCj into a registered address C and changing the transmitter address D into a first repeater address D'; and a second transfer means 230 for transmitting the E-mail. Only E-mail whose transmitter address D is determined by the second transmitter authentication means 222 to be a proper address is processed. COPYRIGHT: (C)2009,JPO&INPIT
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