This article is about the mail transfer agent. For the company, see Sendmail, Inc.
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Sendmail
Original author(s)
Eric Allman
Developer(s)
Sendmail Consortium, Proofpoint, Inc.
Initial release
1983; 41 years ago (1983)
Stable release
8.18.1[1]
/ January 31, 2024; 3 months ago (2024-01-31)
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 source software and Unix communities. It has spread both as free software and proprietary software.
Sendmail is a general purpose internetwork email routing facility that supports many kinds of mail-transfer and delivery methods, including the Simple...
an extension to the widely used open source mail transfer agents (MTA) Sendmail and Postfix. It allows administrators to add mail filters for filtering...
(born September 2, 1955) is an American computer programmer who developed sendmail and its precursor delivermail in the late 1970s and early 1980s at UC Berkeley...
1995, by Daniel J. Bernstein as a more secure alternative to the popular Sendmail program. Originally license-free software, qmail's source code was later...
vulnerabilities of targeted systems, including: A hole in the debug mode of the Unix sendmail program A buffer overflow or overrun hole in the finger network service...
disappeared along with the "bang paths" it used as message routing headers. Sendmail, released with 4.1cBSD in 1983, was one of the first mail transfer agents...
servers procmail - old, but still used bin/mail, the MDA part of Sendmail - Sendmail is one of the oldest email packages Sieve mail filtering language...
BITNET network. It provided functionality similar to a UNIX Sendmail alias and, as with Sendmail, subscriptions were managed manually. In 1986, Éric Thomas...
# lsof -i -n -P | grep sendmailsendmail 31649 root 4u IPv4 521738 TCP *:25 (LISTEN) From the above one can see that "sendmail" is listening on its standard...
The ancestor of sendmail, delivermail, also by Eric Allman, is a mail transport agent that used the FTP protocol on the early ARPANET to transmit e-mail...
installation. To allow the server to send external emails, an MTA such as Sendmail, Postfix, or Exim is required. Mail is read either through direct access...
entry to targeted systems, including: A hole in the debug mode of the Unix sendmail program A buffer overflow or overrun hole in the fingerd network service...
are mixed source software, bundling open-source components like BIND, Sendmail, X Window System, DHCP, and others along with a purely proprietary kernel...
library; the MySQL relational database; the Apache web server; and the Sendmail mail transport agent. Other influential examples include the Emacs text...
programs like grep and locate, the traditional Unix message transfer agent Sendmail contains its own Turing complete scripting system, and the advanced text...
vacation notices from sent to all other subscribers of a mailing list. Sendmail uses this field to affect prioritization of queued email, with "Precedence:...
list in order, until a delivery attempt succeeds. Some servers (such as Sendmail and Postfix 2.1 or later), will attempt the next-furthest MX server after...
reinitialize. This convention survives to this day in packages such as Apache and Sendmail. With the decline of access via serial line, the meaning of SIGHUP has...
clients. Syslog was developed in the 1980s by Eric Allman as part of the Sendmail project. It was readily adopted by other applications and has since become...
inducted into the Internet Hall of Fame as an Innovator. BIND Vixie cron DHCP sendmail Paul Vixie. Software Engineering an essay in: Open Sources: Voices from...
have patches or plug-ins available that support SPF, including Postfix, Sendmail, Exim, qmail, and Qpsmtpd. As of 2017, more than eight million domains...
reported that the security flaw resulted from "a very normal loophole in Sendmail". Forbes wrote that perhaps up to 100 hackers had followed milw0rm's footsteps...
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