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  2. Postfix (software) - Wikipedia

    en.wikipedia.org/wiki/Postfix_(software)

    Postfix (software) Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers electronic mail . It is released under the IBM Public License 1.0 which is a free software license. Alternatively, starting with version 3.2.5, it is available under the Eclipse Public License 2.0 at the user's option. [2]

  3. Comparison of mail servers - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mail_servers

    The comparison of mail servers covers mail transfer agents (MTAs), mail delivery agents, and other computer software that provide e-mail services. Unix -based mail servers are built using a number of components because a Unix-style environment is, by default, a toolbox [1] operating system. A stock Unix-like server already has internal mail ...

  4. Reverse Polish notation - Wikipedia

    en.wikipedia.org/wiki/Reverse_Polish_notation

    Video: Keys pressed for calculating eight times six on a HP-32SII (employing RPN) from 1991. Reverse Polish notation (RPN), also known as reverse Ɓukasiewicz notation, Polish postfix notation or simply postfix notation, is a mathematical notation in which operators follow their operands, in contrast to prefix or Polish notation (PN), in which operators precede their operands.

  5. Exim - Wikipedia

    en.wikipedia.org/wiki/Exim

    Exim is a free software distributed under the terms of the GNU General Public License, and it aims to be a general and flexible mailer with extensive facilities for checking incoming e-mail . Exim has been ported to most Unix-like systems, as well as to Microsoft Windows using the Cygwin emulation layer.

  6. Simple Mail Transfer Protocol - Wikipedia

    en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol

    The Simple Mail Transfer Protocol ( SMTP) is an Internet standard communication protocol for electronic mail transmission. Mail servers and other message transfer agents use SMTP to send and receive mail messages. User-level email clients typically use SMTP only for sending messages to a mail server for relaying, and typically submit outgoing ...

  7. Debian version history - Wikipedia

    en.wikipedia.org/wiki/Debian_version_history

    Debian version history. Debian releases do not follow a fixed schedule. Recent releases have been made around every two years by the Debian Project. The most recent version of Debian is Debian version 12, codename "Bookworm". [1] The next up and coming release of Debian is Debian 13, codename "Trixie".

  8. PulseAudio - Wikipedia

    en.wikipedia.org/wiki/PulseAudio

    PulseAudio is a network-capable sound server program distributed via the freedesktop.org project. It runs mainly on Linux, including Windows Subsystem for Linux on Microsoft Windows and Termux on Android; various BSD distributions such as FreeBSD, OpenBSD, and macOS; as well as Illumos distributions and the Solaris operating system.

  9. Sendmail - Wikipedia

    en.wikipedia.org/wiki/Sendmail

    Sendmail is a general purpose internetwork email routing facility that supports many kinds of mail-transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet . A descendant of the delivermail program written by Eric Allman, Sendmail is a well-known project of the free and open ...