Postfix Add-on Software

before smtp auth | configuration mgt | virus/spam content filters | fax<->mail | list managers | logfile analysis | lookup tables | pop/imap | webmail | package mgt | autoreply | quota | other

To have information listed on this page, send mail to wietse@porcupine.org. The information listed here is maintained by the respective authors. It is listed without formal evaluation, in other words, no implied warranty of any kind.

This page lists tools, add-ons and howtos by subject. Just to be clear on what I am talking about, here is a brief definition of the terminology that is used below:

Utility, system - requires no change to Postfix source code.
Patch - requires making changes to Postfix source code.
Howto - examples of using add-on software with Postfix.

Before SMTP authentication

pop-before-smtp utility by Bennett Todd.
whoson patch by Laurent Wacrenier.
pop-before-smtp howto by Ralf Hildebrandt.
DRAC howto by Ralf Hildebrandt.

Configuration management

POSTCONF Mail Server.
webmin system has a Postfix configuration module.
webmin system documentation.
tequila ( backup link) system for Postfix configuration management, including mail forwarding and autoreply.
VIM macros to highlight keywords in Postfix main.cf files, by Peter Kelemen.
BASH script for automatic completion of postconf commands by Carsten Hoeger.

Virus/SPAM content filters

spampd spam filtering, transparent SMTP/LMTP proxy using SpamAssassin, in Perl by Maxim Paperno.
amavisd-new utility, a high-performance interface between MTA and virus/SPAM scanners.
Anti-spam gateway howto using OpenBSD, Postfix, amavisd-new, SpamAssassin, Razor and DCC.
amavisd-new/Razor/SpamAssassin setup tutorial by Scott Henderson.
amavis system, works with Postfix and other MTAs.
mailscanner system, works with Postfix and other MTAs. This uses unsupported methods to manipulate Postfix queue files, and there are multiple reports of message duplication and/or delivery of truncated messages.
avcheck utility by Michael Tokarev. Interfaces to several virus scanning engines.
sophie system, works with Postfix and other MTAs.
maildrop howto by Matthias Andree. The maildrop delivery agent is part of the Courier mail server software.
anomy email sanitizer system.
anomy howto by Derrick Webber.
avpcheck howto by Ralf Hildebrandt.
smtpprox generic SMTP filtering proxy by Bennet Todd.
mailfilt utility by Bennet Todd.
RAV system, works with Postfix and other MTAs.
Vexira MailArmor virus scanner, works with Postfix on Linux, FreeBSD and OpenBSD.
procmail howto for sanitizing email.
Postfix Anti-UCE Cheat-Sheet by Jim Seymour.
UCE and other howtos by Ralf Hildebrandt.
crm114 mail content inspection system.
crm114 Postfix howto by Eugene Borukhovich.
ORDB (open relay database) configuration tips.
Tagged Message Delivery Agent (TMDA) by Jason R. Mastaler, a system that requires unknown senders to send confirmation before they are put on a whitelist.
Per-user UCE controls patch by Jozsef Kadlecsik.
SpamAssassin mail labeling system.
RBL+ howto by Furio Ercolessi; uses Jozsef Kadlecsik's patch.
PERL extensions patch for UCE filtering of SMTP attributes by Daniele Orlandi.
RBL analysis tools by Craig Sanders.

html-trap utility by Samuel Seay for procmail-based content filtering.

concierge utility by Rich Graves. Analyses Postfix logs and sends mail to users whose mail was rejected by Postfix content filtering.

Fax<->Email software

Faxmimum

List managers

Ecartis mailing list manager system (formerly: Listar).
Listar howto by Craig Sanders.
Mailman howto by Dax Kelson.
Mailman, the GNU Mailing List Management System.
majordomo howto by Jon Parise.
SmartList Mailing List Management System howto.

Logfile analysis

pflogsumm logfile analyzer utility by Jim Seymour.
mailgraph, an RRDtool frontend utility by David Schweikert.
mailstats logfile analyzer utility by Craig Sanders.
LogReport logfile analyzer system. On-line log report processing is available at log@postfix.logreport.org.
Logrep logfile analyzer system.
Isoqlog logfile analyzer system (also supports qmail and Sendmail).

Lookup tables

pam lookup table by Andrew I Baznikin; for example, use this to implement local_recipient_maps with RADIUS.
cidr2abc utility by Gjermund Sorseth to convert arbitary net/mask patterns into octet based patterns such as used in Postfix access maps.
NIS+ patch by Geoff Gibbs.
cdb patch by Michael Tokarev.
tinycdb Michael Tokarev's own CDB implementation.
cidr patch by Jozsef Kadlecsik.
postgresql patch by Philip Warner.
postgresql patch by Mathieu Arnold.
(backup site) postgresql patch by Mathieu Arnold.
postgresql patch by Aaron Sethman.
unix:alias.byname patch by Mindaugas Riauba for aliases lookups via the Linux nsswitch mechanism.
Mysql howto by Daniel V. Pedersen. Uses Andrew McNamara's virtual delivery agent which is now part of Postfix snapshot releases.
Postfix+Mysql howto (Indonesian Language).

POP/IMAP servers

perdition system is a smart POP/IMAP proxy that connects users to the "right" POP/IMAP server.
Cyrus IMAP system implements IMAP, POP3, and KPOP, later versions also support TLS. This software implements its own private mail database system. Not for beginners.
vmail admin a set of PHP and PERL scripts for administering virtual domains on a pop toaster that uses Postfix, Postfix virtual or Courier IMAP, and MYSQL.
Cyrus+SASL howto by Haim R. Dimermanas.
Postfix+Cyrus+Web-cyradm howto by Luc de Louw.
Courier-Imap system provides POP3 and IMAP, and supports access over SSL. This software supports the maildir-style mailbox format only (one message per file, same format as qmail).
Postfix+LDAP+Courier-IMAP howto by Jeroen Vriesman.
Postfix+MySQL+Courier-IMAP+Amavis howto by Martin List-Petersen.
Postfix+MySQL+Courier-IMAP howto by Mischa Peters.
Postfix+MySQL+Courier-IMAP howto by Kirby Menzel and Lucas Peet.
Postfix + Courier + MySQL howto by Keith Matthews and contributors.
Qpopper system supports POP3, TLS (SSL), and uses the traditional UNIX-style mailbox format (multiple messages per file, each message starts with "From sender date...").
GNU pop3d howto by Jørgen Thomsen.
MAC OS X howto for using Postfix with the (ugh) UW IMAP server.

Webmail

Squirrelmail PHP4 based system.
OpenWebmail system.
@Mail system (also for wireless telephone).
IMP system.
NeoMail system.
CAMAS system, an IMHO variant.
IMHO system.

Package management

Solaris utility to create Postfix installable packages.

Autoreply software

yaa! (yet another autoresponder) autoreply utility by Branko Grac. This can run as a one-time command at the end of a pipe, or as a resident server.
Autoreply system architecture by Joshua E. Warchol. You still need to provide the PERL script that does the actual responding.
gnarwl autoreply utility, uses LDAP instead of .foward+vacation.

Quota software

Per-user mailbox quota patch by Keith Stevenson. Not part of Postfix because it does not work with maildir files and because users with .forward files can bypass quota restrictions.
PostmMon Postfix Mail Box Monitor by Eduardo Mendes and Ricardo Malafaia. This sends mail notifications when a user has too much mail.
Postfix virtual delivery agent patches with additional features including maildir quota by Xavier Beaudouin.

Other software

IPV6 patch by Jun-ichiro itojun Hagino of the KAME project.
IPV6 and IPV6+TLS patch Dean Strik.
TLS patch by Lutz Jaenicke. Not part of Postfix until Wietse has figured out a way to avoid adding tens of thousands of lines of code to the SMTP client and server programs.
mini_sendmail utility by Jef Poskanzer, a minimal program to submit mail over SMTP, for example, from a chrooted WWW server.
Multi-line SMTP banners patch by Simon J Mudd. Grumble.
Patches by Michael Tokarev.
Patches by Ragnar Kurm.
Patches by Cygnus: mail spool hashing, mailbox size limit, maildir size limit.