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Purpose of this document ======================== This document provides a road map of the Postfix mail system source code distribution. I suggest that you - take a few minutes to read this file, - review the RELEASE_NOTES file for incompatible changes, - and then proceed with the INSTALL instructions. Introduction ============ This is the public release of the Postfix mail system. Thank you for your interest in this project. Send me a postcard if you like it. My postal address is below. You must read the LICENSE file, if you didn't do so already. A copy of the LICENSE must be distributed with every original, modified, complete, source, or binary copy of this software or parts thereof. I suggest that you keep a copy of the file in /etc/postfix/LICENSE. Purpose of the Postfix mail system ================================== Postfix aims to be an alternative to the widely-used sendmail program. Although IBM supported the Postfix development, it abstains from control over its evolution. The goal is to have Postfix installed on as many systems as possible. To this end, the software is given away with no strings attached to it, so that it can evolve with input from and under control by its users. In other words, IBM releases Postfix only once. I will be around to guide its development for a limited time. On-line resources devoted to the Postfix mail system ==================================================== Web sites: http://www.postfix.org/ current release information Mail addresses (PLEASE send questions to the mailing list) firstname.lastname@example.org Postfix users mailing list In order to subscribe to the mailing list, see http://www.postfix.org/. Acknowledgments =============== This release could not have happened without the input from a team of competent alpha testers. Their names appear in numerous places in the HISTORY file. I appreciate the input from my colleagues at the IBM Global Security Analysis Laboratory: Paul Karger, Dave Safford, Douglas Schales, and Leendert van Doorn. I also appreciate the support by Charles Palmer under whose leadership I began this project, and who had the privilege to name the software, twice. Postcards ========= If you wish to express your appreciation for the Postfix software, you are welcome to send a postcard to: Wietse Venema Google 111 8th Avenue, 4th floor New York, NY 10011 USA Roadmap of the Postfix source distribution ========================================== The RELEASE_NOTES file describes new features, and lists incompatible changes with respect to previous Postfix versions. The INSTALL file provides a step-by-step guide for building and installing Postfix on many popular UNIX platforms. The COMPATIBILITY file lists features that Postfix does or does not yet implement, and how well it works with other software. The HISTORY file gives a detailed log of changes to the software. Point your browser at html/index.html for Postfix documentation and for hyperlinked versions of Postfix manual pages. Expect to see updated versions on-line at http://www.postfix.org/ Point your MANPATH environment variable at the `man' directory (use an absolute path) for UNIX-style on-line manual pages. These pages are also available through the HTML interface, which allows you to navigate faster. The PORTING file discusses how to go about porting Postfix to other UNIX platforms. Documentation: README_FILES/ Instructions for specific Postfix features html/ HTML format man/ UNIX on-line manual page format Example files: conf/ configuration files, run-time scripts examples/ chroot environments, virtual domains Library routines: src/dns/ DNS client library src/global/ Postfix-specific support routines src/milter/ Postfix Milter (mail filter) client src/tls/ TLS client and server support src/util/ General-purpose support routines src/xsasl/ SASL plug-in API Command-line utilities: src/postalias/ Alias database management src/postcat/ List Postfix queue file src/postconf/ Configuration utility src/postdrop/ Postfix mail submission program src/postfix/ Postfix administrative interface src/postkick/ Postfix IPC for shell scripts src/postlock/ Postfix locking for shell scripts src/postlog/ Postfix logging for shell scripts src/postmap/ Postfix lookup table management src/postmulti/ Postfix multi-instance manager src/postqueue/ Postfix queue control program src/postsuper/ Postfix house keeping program src/sendmail/ Sendmail compatibility interface Postfix daemons: src/anvil/ Connection count/rate limiter src/bounce/ Bounce or defer mail src/cleanup/ Canonicalize and enqueue mail src/discard/ Trivial discard mailer src/dnsblog/ DNS agent for postscreen src/error/ Trivial error mailer src/flush/ Support for ETRN, sendmail -qI, sendmail -qR src/local/ Local delivery src/master/ Postfix resident superserver src/oqmgr/ Old queue manager src/pickup/ Local pickup src/pipe/ Pipe delivery src/postscreen/ Zombie blocker src/proxymap/ Table lookup proxy agent src/qmgr/ Queue manager src/qmqpd/ QMQPD server src/scache/ Postfix SMTP session cache src/showq/ List Postfix queue status src/smtp/ SMTP and LMTP client src/smtpd/ SMTP server src/spawn/ Run non-Postfix server src/tlsmgr/ TLS session keys and random pool src/tlsproxy/ TLS proxy for postscreen src/trivial-rewrite/ Address rewriting and resolving src/verify/ address verification service src/virtual/ virtual mailbox-only delivery agent Test programs: src/fsstone/ Measure file system overhead src/posttls-finger/ Postfix SMTP/LMTP TLS probe utility src/smtpstone/ SMTP and QMQP server torture test Miscellaneous: auxiliary/ Auxiliary software etc. bin/ Postfix command executables conf/ Configuration files, run-time scripts include/ Include files implementation-notes/ Background information lib/ Object libraries libexec/ Postfix daemon executables mantools/ Documentation utilities proto/ Documentation source