6 relations: IPv4, IPv6, Postfix (software), Simple Mail Transfer Protocol, Tarpit (networking), Unix.
IPv4
Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol (IP).
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IPv6
Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet.
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Postfix (software)
Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers electronic mail.
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Simple Mail Transfer Protocol
Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (email) transmission.
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Tarpit (networking)
A tarpit (also known as Teergrube, the German word for tarpit) is a service on a computer system (usually a server) that purposely delays incoming connections.
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Unix
Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
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