diff options
Diffstat (limited to 'conf/canonical')
| -rw-r--r-- | conf/canonical | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/conf/canonical b/conf/canonical new file mode 100644 index 0000000..4957fcc --- /dev/null +++ b/conf/canonical @@ -0,0 +1,307 @@ +# CANONICAL(5) CANONICAL(5) +# +# NAME +# canonical - Postfix canonical table format +# +# SYNOPSIS +# postmap /etc/postfix/canonical +# +# postmap -q "string" /etc/postfix/canonical +# +# postmap -q - /etc/postfix/canonical <inputfile +# +# DESCRIPTION +# The optional canonical(5) table specifies an address map- +# ping for local and non-local addresses. The mapping is +# used by the cleanup(8) daemon, before mail is stored into +# the queue. The address mapping is recursive. +# +# Normally, the canonical(5) table is specified as a text +# file that serves as input to the postmap(1) command. The +# result, an indexed file in dbm or db format, is used for +# fast searching by the mail system. Execute the command +# "postmap /etc/postfix/canonical" to rebuild an indexed +# file after changing the corresponding text file. +# +# When the table is provided via other means such as NIS, +# LDAP or SQL, the same lookups are done as for ordinary +# indexed files. +# +# Alternatively, the table can be provided as a regu- +# lar-expression map where patterns are given as regular +# expressions, or lookups can be directed to a TCP-based +# server. In those cases, the lookups are done in a slightly +# different way as described below under "REGULAR EXPRESSION +# TABLES" or "TCP-BASED TABLES". +# +# By default the canonical(5) mapping affects both message +# header addresses (i.e. addresses that appear inside mes- +# sages) and message envelope addresses (for example, the +# addresses that are used in SMTP protocol commands). This +# is controlled with the canonical_classes parameter. +# +# NOTE: Postfix versions 2.2 and later rewrite message head- +# ers from remote SMTP clients only if the client matches +# the local_header_rewrite_clients parameter, or if the +# remote_header_rewrite_domain configuration parameter spec- +# ifies a non-empty value. To get the behavior before Post- +# fix 2.2, specify "local_header_rewrite_clients = +# static:all". +# +# Typically, one would use the canonical(5) table to replace +# login names by Firstname.Lastname, or to clean up +# addresses produced by legacy mail systems. +# +# The canonical(5) mapping is not to be confused with vir- +# tual alias support or with local aliasing. To change the +# destination but not the headers, use the virtual(5) or +# aliases(5) map instead. +# +# CASE FOLDING +# The search string is folded to lowercase before database +# lookup. As of Postfix 2.3, the search string is not case +# folded with database types such as regexp: or pcre: whose +# lookup fields can match both upper and lower case. +# +# TABLE FORMAT +# The input format for the postmap(1) command is as follows: +# +# pattern address +# When pattern matches a mail address, replace it by +# the corresponding address. +# +# blank lines and comments +# Empty lines and whitespace-only lines are ignored, +# as are lines whose first non-whitespace character +# is a `#'. +# +# multi-line text +# A logical line starts with non-whitespace text. A +# line that starts with whitespace continues a logi- +# cal line. +# +# TABLE SEARCH ORDER +# With lookups from indexed files such as DB or DBM, or from +# networked tables such as NIS, LDAP or SQL, each +# user@domain query produces a sequence of query patterns as +# described below. +# +# Each query pattern is sent to each specified lookup table +# before trying the next query pattern, until a match is +# found. +# +# user@domain address +# Replace user@domain by address. This form has the +# highest precedence. +# +# This is useful to clean up addresses produced by +# legacy mail systems. It can also be used to pro- +# duce Firstname.Lastname style addresses, but see +# below for a simpler solution. +# +# user address +# Replace user@site by address when site is equal to +# $myorigin, when site is listed in $mydestination, +# or when it is listed in $inet_interfaces or +# $proxy_interfaces. +# +# This form is useful for replacing login names by +# Firstname.Lastname. +# +# @domain address +# Replace other addresses in domain by address. This +# form has the lowest precedence. +# +# Note: @domain is a wild-card. When this form is +# applied to recipient addresses, the Postfix SMTP +# server accepts mail for any recipient in domain, +# regardless of whether that recipient exists. This +# may turn your mail system into a backscatter +# source: Postfix first accepts mail for non-existent +# recipients and then tries to return that mail as +# "undeliverable" to the often forged sender address. +# +# To avoid backscatter with mail for a wild-card +# domain, replace the wild-card mapping with explicit +# 1:1 mappings, or add a reject_unverified_recipient +# restriction for that domain: +# +# smtpd_recipient_restrictions = +# ... +# reject_unauth_destination +# check_recipient_access +# inline:{example.com=reject_unverified_recipient} +# unverified_recipient_reject_code = 550 +# +# In the above example, Postfix may contact a remote +# server if the recipient is rewritten to a remote +# address. +# +# RESULT ADDRESS REWRITING +# The lookup result is subject to address rewriting: +# +# o When the result has the form @otherdomain, the +# result becomes the same user in otherdomain. +# +# o When "append_at_myorigin=yes", append "@$myorigin" +# to addresses without "@domain". +# +# o When "append_dot_mydomain=yes", append ".$mydomain" +# to addresses without ".domain". +# +# ADDRESS EXTENSION +# When a mail address localpart contains the optional recip- +# ient delimiter (e.g., user+foo@domain), the lookup order +# becomes: user+foo@domain, user@domain, user+foo, user, and +# @domain. +# +# The propagate_unmatched_extensions parameter controls +# whether an unmatched address extension (+foo) is propa- +# gated to the result of table lookup. +# +# REGULAR EXPRESSION TABLES +# This section describes how the table lookups change when +# the table is given in the form of regular expressions. For +# a description of regular expression lookup table syntax, +# see regexp_table(5) or pcre_table(5). +# +# Each pattern is a regular expression that is applied to +# the entire address being looked up. Thus, user@domain mail +# addresses are not broken up into their user and @domain +# constituent parts, nor is user+foo broken up into user and +# foo. +# +# Patterns are applied in the order as specified in the ta- +# ble, until a pattern is found that matches the search +# string. +# +# Results are the same as with indexed file lookups, with +# the additional feature that parenthesized substrings from +# the pattern can be interpolated as $1, $2 and so on. +# +# TCP-BASED TABLES +# This section describes how the table lookups change when +# lookups are directed to a TCP-based server. For a descrip- +# tion of the TCP client/server lookup protocol, see tcp_ta- +# ble(5). This feature is not available up to and including +# Postfix version 2.4. +# +# Each lookup operation uses the entire address once. Thus, +# user@domain mail addresses are not broken up into their +# user and @domain constituent parts, nor is user+foo broken +# up into user and foo. +# +# Results are the same as with indexed file lookups. +# +# BUGS +# The table format does not understand quoting conventions. +# +# CONFIGURATION PARAMETERS +# The following main.cf parameters are especially relevant. +# The text below provides only a parameter summary. See +# postconf(5) for more details including examples. +# +# canonical_classes (envelope_sender, envelope_recipient, +# header_sender, header_recipient) +# What addresses are subject to canonical_maps +# address mapping. +# +# canonical_maps (empty) +# Optional address mapping lookup tables for message +# headers and envelopes. +# +# recipient_canonical_maps (empty) +# Optional address mapping lookup tables for envelope +# and header recipient addresses. +# +# sender_canonical_maps (empty) +# Optional address mapping lookup tables for envelope +# and header sender addresses. +# +# propagate_unmatched_extensions (canonical, virtual) +# What address lookup tables copy an address exten- +# sion from the lookup key to the lookup result. +# +# Other parameters of interest: +# +# inet_interfaces (all) +# The network interface addresses that this mail sys- +# tem receives mail on. +# +# local_header_rewrite_clients (permit_inet_interfaces) +# Rewrite message header addresses in mail from these +# clients and update incomplete addresses with the +# domain name in $myorigin or $mydomain; either don't +# rewrite message headers from other clients at all, +# or rewrite message headers and update incomplete +# addresses with the domain specified in the +# remote_header_rewrite_domain parameter. +# +# proxy_interfaces (empty) +# The network interface addresses that this mail sys- +# tem receives mail on by way of a proxy or network +# address translation unit. +# +# masquerade_classes (envelope_sender, header_sender, +# header_recipient) +# What addresses are subject to address masquerading. +# +# masquerade_domains (empty) +# Optional list of domains whose subdomain structure +# will be stripped off in email addresses. +# +# masquerade_exceptions (empty) +# Optional list of user names that are not subjected +# to address masquerading, even when their addresses +# match $masquerade_domains. +# +# mydestination ($myhostname, localhost.$mydomain, local- +# host) +# The list of domains that are delivered via the +# $local_transport mail delivery transport. +# +# myorigin ($myhostname) +# The domain name that locally-posted mail appears to +# come from, and that locally posted mail is deliv- +# ered to. +# +# owner_request_special (yes) +# Enable special treatment for owner-listname entries +# in the aliases(5) file, and don't split owner-list- +# name and listname-request address localparts when +# the recipient_delimiter is set to "-". +# +# remote_header_rewrite_domain (empty) +# Don't rewrite message headers from remote clients +# at all when this parameter is empty; otherwise, re- +# write message headers and append the specified +# domain name to incomplete addresses. +# +# SEE ALSO +# cleanup(8), canonicalize and enqueue mail +# postmap(1), Postfix lookup table manager +# postconf(5), configuration parameters +# virtual(5), virtual aliasing +# +# README FILES +# Use "postconf readme_directory" or "postconf html_direc- +# tory" to locate this information. +# DATABASE_README, Postfix lookup table overview +# ADDRESS_REWRITING_README, address rewriting guide +# +# LICENSE +# The Secure Mailer license must be distributed with this +# software. +# +# AUTHOR(S) +# Wietse Venema +# IBM T.J. Watson Research +# P.O. Box 704 +# Yorktown Heights, NY 10598, USA +# +# Wietse Venema +# Google, Inc. +# 111 8th Avenue +# New York, NY 10011, USA +# +# CANONICAL(5) |