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X.400

Webopedia Staff
Last Updated May 24, 2021 7:59 am
By Webopedia Staff
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An ISO and ITU standard for addressing and transporting e-mail messages. It conforms to layer 7 of the OSI model and supports several types of transport mechanisms, including Ethernet, X.25, TCP/IP, and dial-up lines.

Webopedia Staff
Webopedia Staff

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