TCP/IP Historical and Special Email Addressing

TCP/IP email has been so successful that it is arguably the most important worldwide standard for electronic messaging. The widespread acceptance of email is tied inextricably to that of TCP/IP and the Internet as a whole. Since most organizations want to be part of the Internet, they connect to it and use its technologies, including DNS, which is the basis for TCP/IP email addresses. In turn, the use of simple DNS-style email addresses (user@domain) encourages further use of email because people find it conceptually easy to decide how to send messages.

TCP/IP is not, however, the only email system around. Over the years, several other networks have developed email systems. Due to the fact that the ...

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