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| | UnixWorld Feature Understanding Sendmail Full Story January 1, 2001 |
 | | Sendmail published application-programming interfaces to allow developers who are plugging in programs in C, Perl or others to filter their incoming mail. | | | With Sendmail Multi Switch 2.1 (reviewed in Network Computing here), the filtering application is built into the product. | | | It limits programs into which Sendmail can pipe mail (for example, as a result of an entry in a.forward file or /etc/mail/aliases) to those programs that reside in a specific directory, usually /usr/libexec/sm.bin. |
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http://www.networkcomputing.com/unixworld/1201/1201uw.html
(1873 words)
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| | Sendmail Logging Documentation |
| | For messages received via sendmails' standard input, it is the count of the bytes received, including the newline characters. | | | The queue class: the numeric value defined in the sendmail configuration file for the keyword given in the Precedence: header of the processed message. | | | The sendmail log file format is described in [1, page 435], which is updated by [3, page 13]. |
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http://logreport.org/doc/gen/email/sendmail.php
(1601 words)
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| | Hardening Sendmail Linux Journal |
| | Sendmail is one of the most venerable internet software packages still in widespread use. | | | 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. | | | On such a host, sendmail should run as an unprivileged user where possible; it should run chroot-ed (in a subset of /) at least when writing files, and it should be configured to relay mail only for your organization, not for spammers. |
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http://www.linuxjournal.com/article.php?sid=5753
(4078 words)
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| | Sendmail (Linktionary term) |
| | Sendmail is an SMTP-compatible mail server that has been used for over 20 years in the UNIX and Internet environments. | | | Sendmail, Inc., has a commercial version of the package with many enhancements. | | | But many of Sendmail's problems have been worked out. |
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http://www.linktionary.com/s/sendmail.html
(187 words)
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| | 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. | | | And, like so many other programs that make up the guts of the Net, sendmail has always been free software -- that is, the underlying source code to the program is freely available and modifiable by anyone with the will and ability to do so. |
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http://archive.salon.com/21st/feature/1998/12/cov_11feature.html
(758 words)
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| | sendmail Computer Encyclopedia Enterprise Resource Directory Complete Guide to Internet |
| | Sendmail is normally invoked in the {background} via a {Mail User Agent} such as the {mail} command. | | | He now has his own company, {Sendmail Inc.} Sendmail was one of the first programs to route messages between {networks} and today is still the dominant e-mail transfer software. | | | The command sendmail -bv ADDRESS can be used to learn what the local mail system thinks of ADDRESS. |
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http://www.jaysir.com/computer-encyclopedia/s/sendmail-computer-terms.htm
(236 words)
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| | Sendmail Security Without Source Code Changes |
| | If sendmail isn't running as root then a user with a pipe in their.forward file will have the program run as mail instead of as the user. | | | This allows sendmail to create lock files when run as group mail, and it can also allow other programs to access mail when they don't have root privs. | | | 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). |
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http://www.coker.com.au/~russell/sendmail.html
(1558 words)
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| | Sendmail V8: A (Smoother) Engine Powers Network Email |
| | Sendmail configuration is treated in the context of implementing the example mail strategy. | | | Sendmail is initiated by a sending MUA for each piece of outgoing mail, which it immediately sends on to the hub system. | | | Sendmail on null clients is normally not run in daemon mode, nor does it maintain a mail queue. |
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http://www.networkcomputing.com/unixworld/tutorial/008/008.txt.html
(6130 words)
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| | Sendmail |
| | In this kind of implementation, LDAP is largely separate from Sendmail, with LDAP storing the hierarchical user information and Sendmail only being given the result of LDAP queries in pre-addressed email messages. | | | However, you should understand what files are installed with Sendmail by default on your system and know how to make basic configuration changes. | | | does not allow sendmail to accept network connections from any host other than the local computer. |
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http://www.redhat.com/docs/manuals/linux/RHL-8.0-Manual/ref-guide/s1-email-sendmail.html
(1614 words)
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| | freshmeat.net: Project details for Sendmail |
| | Sendmail is a Mail Transfer Agent, which is the program that moves mail from one machine to another. | | | Debian: New sendmail packages fix potential open relay | | | Debian: New sendmail packages fix insecure temporary file creation |
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http://freshmeat.net/projects/sendmail
(447 words)
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| | sendmail.net |
| | 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 has performed in-house benchmarking of the open source dk-milter implementation of DomainKeys by Yahoo! | | | These new proposals, known collectively as "Email Sender Authentication", will give receivers the information they need to protect themselves from spoofed email addresses, and lay the groundwork for a much more reliable process of accepting mail into an inbox than is possible with today's content filtering approaches. |
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http://www.sendmail.net
(541 words)
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| | CERT Advisory CA-2003-07 Remote Buffer Overflow in Sendmail |
| | Sendmail has indicated to the CERT/CC that this vulnerability has been successfully exploited in a laboratory environment. | | | In other words, vulnerable sendmail servers on the interior of a network are still at risk, even if the site's border MTA uses software other than sendmail. | | | MandrakeSoft has issued updated sendmail packages that are not vulnerable to this problem by using the patches provided by the sendmail development team. |
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http://www.cert.org/advisories/CA-2003-07.html
(1677 words)
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| | Sendmail Home Page |
| | Sendmail urges all users to upgrade to sendmail 8.12.10. | | | Thanks also for sponsoring the design of this web-site, including the sendmail.org logo. | | | The past support of Paul Vixie and the Internet Software Consortium is gratefully appreciated. |
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http://www.sendmail.org
(440 words)
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| | sendmail Configuration |
| | sendmail's job is to accept mail from Mail User Agents (MUA) and deliver it to the appropriate mailer as defined by its configuration file. | | | sendmail's error handling routine with a given mailer error. | | | sendmail can also accept network connections and deliver mail to local mailboxes or deliver it to another program. |
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http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/sendmail.html
(585 words)
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| | UNIX man pages : sendmail () |
| | sendmail often gets blamed for many problems that are actually the result of other problems, such as overly permissive modes on directo- ries. | | | For example, a common alias is: msgs: "/usr/bin/msgs -s" Aliases may also have the syntax ``:include:filename'' to ask sendmail to read the named file for a list of recipients. | | | For this reason, sendmail checks the modes on system directories and files to determine if they can be trusted. |
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http://unixhelp.ed.ac.uk/CGI/man-cgi?sendmail
(1895 words)
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| | Amazon.com: Sendmail: Books: Bryan Costales,Eric Allman |
| | Although sendmail is used on almost every Unix system, it's one of the last great uncharted territories--and most difficult utilities to learn--in Unix system administration. | | | This is the definitive reference on the program "sendmail", which is used to handle over 75% of all e-mail on the Internet. | | | Other topics include the #error delivery agent, sendmail's exit values, MIME headers, and how to set up and use the user database, mailertable, and smrsh. |
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http://www.amazon.com/exec/obidos/tg/detail/-/1565922220?v=glance
(1238 words)
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| | GeodSoft How-To Harden OpenBSD Removing Services |
| | 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. | | | In addition to running as a daemon, the Sendmail included with OpenBSD 3.0 is much more insistent about doing DNS lookups. | | | Miller provided the fix which involves a changes to the sendmail configuration files. |
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http://geodsoft.com/howto/harden/OpenBSD/services.htm
(2824 words)
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| | sendmail.net: sid-milter |
| | 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. | | | This software is being provided to the open source community for the purposes of testing the Sender ID approach against various implementations of mail transport agents, mail list managers, forwarding services, and various other SMTP software. | | | -submitter requires an optional SMTP extension that would be implemented in the sendmail MTA. |
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http://www.sendmail.net/sid-milter
(483 words)
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| | UNIX sendmail Vulnerabilities |
| | Note that depending on the currently installed sendmail software, switching to sendmail 8.6.4 may potentially require significant effort for the system administrator to become familiar with the new program. | | | 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). | | | In the absence of specific vendor information, CIAC recommends that all implementations of sendmail be considered vulnerable to attack. |
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http://ciac.llnl.gov/ciac/bulletins/e-03.shtml
(970 words)
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| | MacDevCenter.com -- Configuring sendmail on Jaguar |
| | Sendmail is complicated software, no doubt about it. | | | You see sendmail really wants any directory that it is involved with to be only modifiable by the root user. | | | You see, in its quest to make Unix more "Mac like," Apple decided that it would be best to allow users, at least administrative users, to be able to move files in and out of the root directory with impunity. |
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http://www.macdevcenter.com/pub/a/mac/2002/09/10/sendmail.html
(835 words)
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| | Amazon.co.uk: Sendmail: Books |
| | Because the latest version of sendmail differs so significantly from earlier versions, a massive rewrite of this best-selling reference was called for. | | | The new edition of sendmail has been completely revised to cover sendmail 8.12--a version with more features and fundamental changes than any previous version of the Unix-based email routing program. | | | The new edition of sendmail has been revised to cover sendmail 8.12 - a version with more features and fundamental changes than any previous version of the Unix-based email routing program. |
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http://www.amazon.co.uk/exec/obidos/ASIN/1565928393
(798 words)
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| | Sendmail |
| | The main configuration file for sendmail is the /etc/mail/sendmail.cf file. | | | The directory for the sendmail m4/cf.m4 file depends on the operating system you are using: | | | Starting with version 8.12, sendmail uses the /etc/mail/submit.cf configuration file for mail submission. |
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http://www.elandsys.com/resources/sendmail
(998 words)
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| | ish : show : articles : sendmail OSX |
| | Sendmail will use this file as well as the aliases in NetInfo to map addresses, put them wherever is more convenient. | | | This file is used to map various domains that sendmail responds to against the local users to whom the mail is delivered. | | | Next, we need to create some files that sendmail uses to work out what to do. |
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http://www.ish.com.au/show/article_sendmailOSX.html
(871 words)
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| |
| | A Brief History of Mail |
| | In 1998, Sendmail Inc. was formed, to create a commercial version of sendmail. | | | In response to the new SMTP protocol, and the functionality provided by DNS, Eric Allman evolved his delivermail program into sendmail. | | | Shortly after this, in 1986, the widespread adoption of DNS as a replacement for the old HOSTS file provided a way to extend the functionality of e-mail systems. |
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http://www.coruscant.demon.co.uk/mike/sendmail/history.html
(687 words)
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| |
| | sendmail - a Whatis.com definition |
| | Sendmail Inc. provides details about its Sendmail software packages. | | | On the Internet, sendmail is the most popular Unix-based implementation of the Simple Mail Transfer Protocol (SMTP) for transmitting e-mail. | | | sendmail.org is a resource center for information about sendmail and includes links to other sendmail sites. |
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http://whatis.techtarget.com/definition/0,289893,sid9_gci212961,00.html
(248 words)
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| | ISP-Planet - Value-Added Services - Webmail Directory - Sendmail |
| | In response to those queries, Allman and Greg Olson formed Sendmail, Inc. in 1998, offering a commercial version of the MTA (message transfer agent) along with technical support and a straightforward user interface. | | | An enhanced webmail product is in the works that will work with the Intelligent Inbox offering to allow end users to manage their anti-spam and anti-virus rules from the same Web interface they use to manage mail. | | | Based on the work of the open-source sendmail project, Sendmail, Inc. offers a complete, end-to-end solution for ISPs backed by more than 20 years of experience. |
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http://www.isp-planet.com/services/webmail/2004/sendmail.html
(974 words)
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| |
| | SendMail for Windows Home Page |
| | It is a Windows version of the popular Unix Sendmail program. | | | Sendmail is trademark of Sendmail Inc. IndigoSTAR Software is not affiliated with Sendmail Inc. | | | It allows easy migration of perl scripts from Unix to Windows since it uses the same simple interface as the Unix Sendmail. |
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http://www.indigostar.com/sendmail.htm
(155 words)
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| | Sendmail MIME Conversion Buffer Overrun Vulnerability |
| | When changing to a new version of sendmail, it is strongly recommended that the configuration files are updated with those of the new version. | | | Creating your configuration files using this method makes it easier to incorporate future changes to sendmail into your configuration files. | | | Significant work has been done to make this task easier. |
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http://ciac.llnl.gov/ciac/bulletins/h-23.shtml
(869 words)
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| |
| | rhn.redhat.com Red Hat Support |
| | These packages also fix a security bug if sendmail is configured to use smrsh. | | | Updated Sendmail packages are available to fix a vulnerability that | | | We are advised that a proof-of-concept exploit is known to exist, but |
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http://rhn.redhat.com/errata/RHSA-2003-073.html
(369 words)
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| |
| | Debian -- sendmail |
| | Sendmail is an alternative Mail Transport Agent (MTA) for Debian. | | | It is suitable for handling sophisticated mail configurations, although this means that its configuration can also be complex. | | | Fortunately, simple thing can be done easily, and complex things are possible, even if not easily understood ;) Sendmail is the *ONLY* MTA with a Turing complete language to control *ALL* aspects of delivery! |
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http://packages.debian.org/stable/mail/sendmail.html
(177 words)
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| | Flexible mail relaying control for sendmail |
| | If your system doesn't have that library, you can use the "dbm" map type, whose routines are available on nearly all UNIX systems in their standard C libraries, or get DB 1.86 from SleepyCat software. | | | These instructions assume you have some familiarity with configuring and operating sendmail. | | | formats are blessed by the RFCs and handled by sendmail. |
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http://hexadecimal.uoregon.edu/antirelay
(1722 words)
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| |
| | Mike's Mac OS X Management Software and Tips: Enabling Sendmail |
| | Sendmail is the built-in mail server on Mac OS X (its bundled with many Unix operating systems). | | | Mike's Mac OS X Management Software and Tips: Enabling Sendmail | | | While you're in there, you might as well add the recommend permissions settings (see /Library/Documentation/Administration/Services/sendmail/README) to avoid other problems with starting sendmail: |
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http://www.bombich.com/mactips/sendmail.html
(316 words)
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| | qmail: Second most popular MTA on the Internet |
| | This is important to run before starting up qmail, because sendmail doesn't care a whit whether the user owns their home directory, but home directory ownership is how qmail decides if the user exists or not. | | | Daniel J. Bernstein suggests that if you have buggy clients that send bare LFs, and you want to treat their messages the same way sendmail does, you can simply run his fixcrio program instead of qmail-smtpd for your outgoing mail relay. | | | Matthias Andree has a patch to allow qmail's sendmail wrapper to |
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http://www.qmail.org/top.html
(8614 words)
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| | CNN.com - Security flaw puts e-mail at risk - Mar. 4, 2003 |
| | The most widely used program for transferring e-mail between computer networks has a security flaw that could allow attackers to disrupt the flow of e-mail and intercept messages, the program's developer said Monday. | | | • Fixes for the vulnerability are available, free of charge, at Sendmail's Web site by applying a patch or upgrading to the latest version of Sendmail. | | | ISS said in a statement that the vulnerability "especially dangerous" because an attacker doesn't need any specific knowledge of the target and can exploit the flaw via an e-mail message. |
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http://www.cnn.com/2003/TECH/internet/03/04/email.flaw.reut
(375 words)
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| | Setting Up Email: A Sendmail HOWTO - RimuHosting |
| | In Webmin: Sendmail; Sendmail M4 Configuration; Edit the File Manually. | | | If email intended for users of other domains ends up at your server (for whatever reason), it will be rejected with an error message like "reason: 550 Host unknown". | | | Sometimes you also need it to accept email send to other domains, for example email for other domains you host on the server. |
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http://rimuhosting.com/support/settingupemail.jsp?mta=sendmail
(2774 words)
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| | Sendmail FAQ |
| | 3.19 When is sendmail going to support RFC 2047 MIME header encoding? | | | 5.3.1.1 Why do I have so many sendmail problems after configuring sendmail with linuxconf? | | | 3.25 Why can't I compile sendmail with Berkeley DB 2.X? What operating systems has Berkeley sendmail been ported to? |
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http://www.sendmail.org/faq
(1030 words)
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| | Clues, Vandalism, Litter Sendmail Trojan Trail |
| | The Trojan horse discovered in a distribution of the Sendmail open-source e-mail server has striking similarities to a backdoor planted in OpenSSH last summer, according to security experts who've analyzed the code. | | | That similarity is more than skin deep, according to Erik Parker, a senior security analyst at San Antonio-based Digital Defense who analyzed the code in his spare time. | | | Once downloaded, the victim unwittingly activates the backdoor by compiling Sendmail from source code. |
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http://www.securityfocus.com/news/1113
(900 words)
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| | Sendmail Address Prescan Memory Corruption Vulnerability |
| | The flaw is present in the prescan() procedure, one that is used for processing e-mail addresses in SMTP headers. | | | Affected users are advised to upgrade if possible. | | | Sendmail version 8.12.9 is not affected by this vulnerability. |
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http://securityresponse.symantec.com/avcenter/security/Content/7230.html
(309 words)
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| |
| | Hanoi: Sendmail |
| | # 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. | | | The Towers of Hanoi implemented through Sendmail's configuration (.cf) file mechanism. | | | In order to solve Hanoi for N disks, try: # # echo 99 N |
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http://www.kernelthread.com/hanoi/html/cf.html
(178 words)
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| |
| | milter.org |
| | Most notable fix was in the socket.h file for a #define ordering problem on many *nix boxen. | | | As previously mentioned, this is not directly milter related, yet it might prove handy if you want to start testing Sendmail X along side Sendmail 8 with the same data stream during some up coming migration. | | | Find the corner in a Roundhouse - update |
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http://www.milter.org
(664 words)
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| |
| | SendMail is a versatile program for send files by EMail on timer |
| | For example you have to send some file through scheduler or in some other way. | | | SendMail is a versatile program for send files by EMail on timer | | | Besides SendMail has the option of moving files to certain archive folders. |
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http://www.coolutils.com/SendMail
(240 words)
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| |
| | Technoids.org |
| | Sendmail 8.13.5 Installation and Operation Guide--PDF format (text format) | | | How to Remove a Host from Sendmail's Class w | | | LMTP Configuration of the Procmail LDA in FreeBSD Sendmail |
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http://www.technoids.org
(99 words)
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| | [No title] |
| | Brad Knowles, 19960208: ``sendmail is actually one of the more secure processes on the machine. | | | 8.7.5 (fixed 19960917): ``It is possible to force getpwuid to fail when writing the queue file, causing sendmail to fall back to running programs as the default user.'' Impact: Any local user can take over the daemon account. | | | possible to get a root shell by lying to sendmail about argv[0] and then sending it a signal.'' Impact: Any local user can take over the machine. |
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http://cr.yp.to/maildisasters/sendmail.html
(1309 words)
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| | sendmail |
| | sendmail.exe is a simple windows console application that emulates sendmail's "-t" option to deliver emails piped via stdin. | | | 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. | | | i've had a few reports of sendmail returning a "range check error". |
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http://glob.com.au/sendmail
(404 words)
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| | Postfix manual - sendmail(1) |
| | Some fea- tures are controlled by parameters in the main.cf configu- ration file. | | | ] mailq sendmail -bp newaliases sendmail -I DESCRIPTION The Postfix sendmail(1) command implements the Postfix to Sendmail compatibility interface. | | | SENDMAIL(1) SENDMAIL(1) NAME sendmail - Postfix to Sendmail compatibility interface SYNOPSIS sendmail [option... |
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http://www.postfix.org/sendmail.1.html
(1616 words)
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| |
| | SendMail.pm -- Perl Module |
| | And it can be used in any perl script to send a mail similar to sending mail by using /usr/lib/sendmail program. | | | NAME SendMail -- This is a perl module which is using Socket to connect the SMTP port to send mails. | | | SendMail.pm 2.09 version is ready now, click here to have a look. |
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http://www.tneoh.zoneit.com/perl/SendMail
(301 words)
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| |
| | SourceForge.net: Sendmail::Milter Perl Module |
| | Sendmail::Milter is a Perl module that lets you write mail filters for sendmail in Perl. | | | Provide feedback on this page Recently changed page Site Status |
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http://sourceforge.net/projects/sendmail-milter
(107 words)
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