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Sendmail - Wikipedia, the free encyclopedia Sendmail is a mail transfer agent (MTA) that is a well known project of the open source and Unix communities and is distributed both as free software and proprietary software. The original version of Sendmail was written by Eric Allman in the early 1980s at UC Berkeley, who had also written delivermail previously. Sendmail was shipped with BSD 4.1c in 1983 (the first BSD version to include TCP/IP). en.wikipedia.org /wiki/Sendmail   (591 words)

Sendmail - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-11-06) Sendmail is an open source mail transfer agent (MTA): a computer program for the routing and delivery of email. Sendmail has been widely criticized as slow, overcomplicated, and difficult to maintain by comparison with other MTAs such as Exim, Qmail and Postfix. The next generation of Sendmail (under development) is called sendmail X (http://www.sendmail.org/~ca/email/sm-9-rfh.html) (previously it was called sendmail 9). www.tustin.us /project/wikipedia/index.php/Sendmail   (667 words)

sendmail Computer Encyclopedia Enterprise Resource Directory Complete Guide to Internet   (Site not responding. Last check: 2007-11-06) Sendmail is normally invoked in the {background} via a {Mail User Agent} such as the {mail} command. Sendmail was written by {Eric Allman} at the {University of California at Berkeley} during the late 1970s. SendMail 8.9 is still distributed as {source code} with the rights to modify and distribute. www.jaysir.com /computer-encyclopedia/s/sendmail-computer-terms.htm   (236 words)

Sendmail Home Page Sponsored by Sendmail, Inc., which also provides anti-spam, anti-virus and policy management add-ons for the open source sendmail MTA. Sendmail 8.12.10 is available; it contains a fix for a critical security problem discovered by Michal Zalewski. This patch is valid for all supported sendmail versions before 8.12.10. www.sendmail.org   (440 words)

Hardening Sendmail | Linux Journal Indeed, sendmail's code has been scrutinized so closely by so many programmers over the years that it's a little hard to believe that too much cruft (i.e., code that is strictly historical and obsolete) has survived intact over the past 20 years. Sendmail has two modes of operation: it can be invoked as needed, in which case it will process any queued mail and then quit; or it can be run as a persistent background dæmon. Sendmail expects its configuration file to be named sendmail.cf; however, it looks for it in /etc, so that part of the command is the same regardless of your distribution or even your version of sendmail. www.linuxjournal.com /article.php?sid=5753   (4078 words)

Sendmail Logging Documentation   (Site not responding. Last check: 2007-11-06) The log message contents depends on the sendmail version; [1] describes it for sendmail version 8.8.4; [3] for version 8.10 (8.10.2 is current at the time of writing). For messages received via sendmails' standard input, it is the count of the bytes received, including the newline characters. The sendmail log line does not show the year, which is a drawback of the syslog(3) facility. logreport.org /doc/gen/email/sendmail.php   (1601 words)

UnixWorld | Feature | Understanding Sendmail | Full Story | January 1, 2001 Sendmail, the venerable MTA, has been around long enough to have created a whole generation of mail administrators with the necessary know-how to successfully run mail systems for big corporations and government institutions. Sendmail published application-programming interfaces to allow developers who are plugging in programs in C, Perl or others to filter their incoming mail. Sendmail Multi Switch 2.1 manages the workload between multiple departmental or on-site mail servers and provides a module for encrypted access for both local and remote mail users through a range of mail protocols. www.networkcomputing.com /unixworld/1201/1201uw.html   (1873 words)

Sendmail Sendmail's roots can be traced to the birth of email, occurring in the decade before the birth of ARPANET, the precursor to the Internet. Sendmail, which grew out of an earlier email delivery system called Delivermail, quickly became the standard as the email began to expand and become widely used. In this situation, the sendmail server needs to masquerade the machine names on the company network so that their return address is user@bigcorp.com instead of user@devel.bigcorp.com. www.redhat.com /docs/manuals/linux/RHL-8.0-Manual/ref-guide/s1-email-sendmail.html   (1614 words)

freshmeat.net: Project details for Sendmail   (Site not responding. Last check: 2007-11-06) Sendmail is a Mail Transfer Agent, which is the program that moves mail from one machine to another. Sendmail implements a general internetwork mail routing facility, featuring aliasing and forwarding, automatic routing to network gateways, and flexible configuration. Sendmail when run in conjunction with popauthd scripts which automatically update the access (usually /etc/mail/access) automatically, sendmail seems to fill up a buffer or something and no longer reads from access file and rejects everyone relaying denied. freshmeat.net /projects/sendmail   (447 words)

sendmail.net: sid-milter   (Site not responding. Last check: 2007-11-06) This implementation is part of the Sendmail Messaging Integrity program, a comprehensive testing initiative designed to gather real-world usage data by evaluating several aspects of various leading sender authentication schemes against a wide range of SMTP software operating today. The sid-milter source code is released under the Sendmail Open Source License, a copy of which is available in the source package, as is a notice regarding the Microsoft Sender ID Patent License. Sendmail remains committed to open source and the open standards process, which is why we have released a prototype milter meant to test the Sender ID specification that is being discussed by the IETF. www.sendmail.net /sid-milter   (483 words)

Sendmail Sendmail's core duty, like other MTAs, is to safely move email between hosts, usually utilizing the SMTP protocol. However, Sendmail is highly configurable, allowing you to control almost every aspect of how email is handled, including the protocol to be used. Sendmail, which grew out of an earlier email delivery system called Delivermail, quickly became the standard as the Internet began to expand and be widely utilized. www.redhat.com /docs/manuals/linux/RHL-7.2-Manual/ref-guide/s1-email-sendmail.html   (1531 words)

Sendmail Security Without Source Code Changes   (Site not responding. Last check: 2007-11-06) At the same time as doing this I've setup sendmail to run with TCPD, this means that it's not possible for a remote host to setup bogus reverse DNS records and send spam-mail to the world through my system. I have considered installing a shell-script to run "sendmail -q" as the shell for the mail user and allowing anyone who wants to flush the queue to login as mail (I'm still considering the potential risks of this). If you run sendmail as a stand-alone daemon (with -bd which seems to be the default setup for all distributions) then it will limit the number of instances it'll run. www.coker.com.au /~russell/sendmail.html   (1558 words)

Sendmail V8: A (Smoother) Engine Powers Network Email Sendmail is the most common SMTP mail transfer agent on the thousands of mostly Unix-based Internet hosts that handle mail routing and serve as post offices. Sendmail's UUCP capabilities, perhaps less relevant than they were a few years ago, are outside the scope of this presentation. Sendmail is initiated by a sending MUA for each piece of outgoing mail, which it immediately sends on to the hub system. www.networkcomputing.com /unixworld/tutorial/008/008.txt.html   (6130 words)

sendmail.net   (Site not responding. Last check: 2007-11-06) Sendmail is currently working with a number of the world's largest email sites to add a layer of authentication and accountability to the network so that it will be possible for receivers to validate that a message actually came from where it claims to have come from. Sendmail is a proud supporter and underwriter of the Email Authentication Implementation Summit, a cross-industry, collaborative initiative to improve the security and reliability of email and to protect customers, users, and online brands from the persistent threats of spam, phishing and email fraud. Sendmail has released a whitepaper detailing our recommendations for what both senders and receivers of email should do in order to best protect themselves from fraud and spoofing in email. www.sendmail.net   (541 words)

sendmail sendmail.exe is a simple windows console application that emulates sendmail's "-t" option to deliver emails piped via stdin. i've had a few reports of sendmail returning a "range check error". i've been unable to reproduce but i'll be releasing a new version of sendmail that will help me track down the cause of this error. glob.com.au /sendmail   (404 words)

man: sendmail   (Site not responding. Last check: 2007-11-06) Sendmail sends a message to one or more recipients, rout- ing the message over whatever networks are necessary. Sendmail is not intended as a user interface routine; other programs provide user-friendly front ends; sendmail is used only to deliver pre-formatted messages. In aliases, the first character of a name may be a verti- cal bar to cause interpretation of the rest of the name as a command to pipe the mail to. www.hmug.org /man/8/sendmail.html   (1952 words)

CERT Advisory CA-2003-07 Remote Buffer Overflow in Sendmail There is a vulnerability in sendmail that may allow remote attackers to gain the privileges of the sendmail daemon, typically root. Even vulnerable sendmail servers on the interior of a given network may be at risk since the vulnerability is triggered from the contents of a malicious email message. It should be noted that sendmail is not enabled by default on Mac OS X, so only those systems which have explicitly enabled it are susceptible to the vulnerability. www.cert.org /advisories/CA-2003-07.html   (1677 words)

Hanoi: Sendmail The Towers of Hanoi implemented through Sendmail's configuration (.cf) file mechanism. # http://hanoi.kernelthread.com # # Last tested with sendmail 8.12.5 (version 10 of.cf file) # # Acceptable input (number of disks) is a positive integer between # 1 and 9, both inclusive. sendmail -bt -d21.3 -C hanoi.cf # # To suppress the debug output, and get only the list of moves, try # the following: # # echo 99 N www.kernelthread.com /hanoi/html/cf.html   (178 words)

CERT Advisory CA-2003-25 Buffer Overflow in Sendmail A vulnerability in sendmail could allow a remote attacker to execute arbitrary code with the privileges of the sendmail daemon, typically root. Sendmail has also released a patch that can be applied to Sendmail 8.9.x through 8.12.9. Sendmail 8.12.10 is designed to correct malformed messages that are transferred by the server. www.cert.org /advisories/CA-2003-25.html   (1250 words)

UNIX man pages : sendmail () Sendmail sends a message to one or more recipients, routing the message over whatever networks are necessary. Sendmail does internetwork for- warding as necessary to deliver the message to the correct place. Sendmail is not intended as a user interface routine; other programs provide user-friendly front ends; sendmail is used only to deliver pre- formatted messages. unixhelp.ed.ac.uk /CGI/man-cgi?sendmail   (1895 words)

GeodSoft How-To Harden OpenBSD Removing Services The primary reason for not running sendmail as a daemon is to not expose a public SMTP port (25). The default install starts sendmail using /etc/mail/localhost.cf as the configuration file and this has sendmail listening only to the localhost (127.0.0.1.) IP address and not any outside addresses. If Sendmail cannot properly resolve the current machine's IP address to a hostname that matches one provided in the system setup, e-mail won't be delivered and /var/log/maillog will fill with errors. geodsoft.com /howto/harden/OpenBSD/services.htm   (2824 words)

Sendmail (Linktionary term)   (Site not responding. Last check: 2007-11-06) Sendmail is an SMTP-compatible mail server that has been used for over 20 years in the UNIX and Internet environments. Historically, Sendmail has been hard to administer and has had a number of security problems. Sendmail, Inc., has a commercial version of the package with many enhancements. www.linktionary.com /s/sendmail.html   (187 words)

Salon 21st | You've got sendmail Sendmail isn't the only such "mail transport agent," but it is by far the busiest, installed on an estimated 60 to 80 percent of the Internet's mail-server computers. But Allman's creation, and later distribution, of sendmail did fit in naturally with the glorious hacking tradition of the computer science department at Berkeley -- where mucking around with the innards of the Unix operating system was long considered, if not a God-given right, then at the very least a cherished responsibility. Sendmail Inc.'s corporate headquarters is in Emeryville, Calif., a developer-friendly enclave squeezed between Oakland and Berkeley along the east shore of San Francisco Bay. archive.salon.com /21st/feature/1998/12/cov_11feature.html   (758 words)

MacDevCenter.com -- Configuring sendmail on Jaguar The number one "trick" to setting up sendmail on Mac OS X is dealing with the way that Apple has configured the permissions on the various directories on the filesystem. I instructed readers to change the ownership, edit the sendmail startup script to make sure that these permissions are correct on system startup, and even add a cron job that fires every hour to make sure that things stay right even if a system update changes things back. Think of it as the administration of a small amount of medication to sendmail to reassure it that not everything in the world is a risk. www.macdevcenter.com /pub/a/mac/2002/09/10/sendmail.html   (835 words)

ISP-Planet - Value-Added Services - Webmail Directory - Sendmail Sendmail, Inc. 's history stretches back to Eric Allman's creation of the open-source sendmail project in 1981. In addition, Sendmail's MailCenter product offers everything from POP and IMAP servers to webmail, as well as Intelligent Inbox, an end user personal filtering tool that allows users to control their own anti-spam and anti-virus settings. Sendmail's current webmail offering provides both a webmail interface and a wireless solution for handheld devices. www.isp-planet.com /services/webmail/2004/sendmail.html   (974 words)

Sendmail MIME Conversion Buffer Overrun Vulnerability As part of its functionality, sendmail is able to perform limited 7 to 8 bit MIME conversions on email messages. By sending a carefully crafted email message to a system running a vulnerable version of sendmail, intruders may be able to force sendmail to execute arbitrary commands with root privileges. When changing to a new version of sendmail, it is strongly recommended that the configuration files are updated with those of the new version. ciac.llnl.gov /ciac/bulletins/h-23.shtml   (869 words)

[No title] These are the most serious sendmail security and reliability problems admitted by Eric Allman, from sendmail 8.6 in 1993 through sendmail 8.8.7 in 1997. Dan Stromberg, 19970611: ``The 5.x sendmail's are riddled with holes. Brad Knowles, 19960208: ``sendmail is actually one of the more secure processes on the machine. cr.yp.to /maildisasters/sendmail.html   (1309 words)

Sendmail Sendmail implements a general purpose internetwork mail routing facility. Sendmail has been split into two parts, with one part handling mail submission. As of sendmail version 8.12.x, you should have sendmail running as a daemon and listening on localhost at least. www.elandsys.com /resources/sendmail   (998 words)

UNIX sendmail Vulnerabilities This workaround involves modifying the sendmail configuration file to restrict the sendmail program mailer facility using the sendmail restricted shell, smrsh, by Eric Allman (the original author of sendmail). To provide this information, sendmail must be configured to bounce mail to the local postmaster and generate adequate logs. Whenever any changes are made to the sendmail configuration file, it is necessary to kill all existing sendmail processes, refreeze the configuration file (on some systems), and restart the sendmail daemon. ciac.llnl.gov /ciac/bulletins/e-03.shtml   (970 words)

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