232 lines
11 KiB
HTML
232 lines
11 KiB
HTML
<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
|
|
"http://www.w3.org/TR/html4/loose.dtd">
|
|
<html> <head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
|
|
<title> Postfix manual - canonical(5) </title>
|
|
</head> <body> <pre>
|
|
CANONICAL(5) CANONICAL(5)
|
|
|
|
<b>NAME</b>
|
|
canonical - format of Postfix canonical table
|
|
|
|
<b>SYNOPSIS</b>
|
|
<b>postmap /etc/postfix/canonical</b>
|
|
|
|
<b>postmap -q "</b><i>string</i><b>" /etc/postfix/canonical</b>
|
|
|
|
<b>postmap -q - /etc/postfix/canonical</b> <<i>inputfile</i>
|
|
|
|
<b>DESCRIPTION</b>
|
|
The optional <b>canonical</b> table specifies an address mapping
|
|
for local and non-local addresses. The mapping is used by
|
|
the <a href="cleanup.8.html"><b>cleanup</b>(8)</a> daemon. The address mapping is recursive.
|
|
|
|
Normally, the <b>canonical</b> table is specified as a text file
|
|
that serves as input to the <a href="postmap.1.html"><b>postmap</b>(1)</a> command. The
|
|
result, an indexed file in <b>dbm</b> or <b>db</b> format, is used for
|
|
fast searching by the mail system. Execute the command
|
|
<b>postmap /etc/postfix/canonical</b> in order to rebuild the
|
|
indexed file after changing the 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 regular-
|
|
expression map where patterns are given as regular expres-
|
|
sions, or lookups can be directed to TCP-based server. In
|
|
that case, the lookups are done in a slightly different
|
|
way as described below under "REGULAR EXPRESSION TABLES"
|
|
and "TCP-BASED TABLES".
|
|
|
|
The <b>canonical</b> mapping affects both message header
|
|
addresses (i.e. addresses that appear inside messages) and
|
|
message envelope addresses (for example, the addresses
|
|
that are used in SMTP protocol commands). Think Sendmail
|
|
rule set <b>S3</b>, if you like.
|
|
|
|
Typically, one would use the <b>canonical</b> table to replace
|
|
login names by <i>Firstname.Lastname</i>, or to clean up
|
|
addresses produced by legacy mail systems.
|
|
|
|
The <b>canonical</b> mapping is not to be confused with <i>virtual</i>
|
|
<i>domain</i> support. Use the <a href="virtual.5.html"><b>virtual</b>(5)</a> map for that purpose.
|
|
|
|
The <b>canonical</b> mapping is not to be confused with local
|
|
aliasing. Use the <a href="aliases.5.html"><b>aliases</b>(5)</a> map for that purpose.
|
|
|
|
<b>TABLE FORMAT</b>
|
|
The input format for the <a href="postmap.1.html"><b>postmap</b>(1)</a> command is as follows:
|
|
|
|
<i>pattern result</i>
|
|
When <i>pattern</i> matches a mail address, replace it by
|
|
the corresponding <i>result</i>.
|
|
|
|
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.
|
|
|
|
With lookups from indexed files such as DB or DBM, or from
|
|
networked tables such as NIS, LDAP or SQL, patterns are
|
|
tried in the order as listed below:
|
|
|
|
<i>user</i>@<i>domain address</i>
|
|
<i>user</i>@<i>domain</i> is replaced by <i>address</i>. 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 <i>Firstname.Lastname</i> style addresses, but see
|
|
below for a simpler solution.
|
|
|
|
<i>user address</i>
|
|
<i>user</i>@<i>site</i> is replaced by <i>address</i> when <i>site</i> is equal
|
|
to $<b><a href="postconf.5.html#myorigin">myorigin</a></b>, when <i>site</i> is listed in $<b><a href="postconf.5.html#mydestination">mydestina</a>-</b>
|
|
<b><a href="postconf.5.html#mydestination">tion</a></b>, or when it is listed in $<b><a href="postconf.5.html#inet_interfaces">inet_interfaces</a></b> or
|
|
$<b><a href="postconf.5.html#proxy_interfaces">proxy_interfaces</a></b>.
|
|
|
|
This form is useful for replacing login names by
|
|
<i>Firstname.Lastname</i>.
|
|
|
|
@<i>domain address</i>
|
|
Every address in <i>domain</i> is replaced by <i>address</i>.
|
|
This form has the lowest precedence.
|
|
|
|
In all the above forms, when <i>address</i> has the form @<i>other-</i>
|
|
<i>domain</i>, the result is the same user in <i>otherdomain</i>.
|
|
|
|
<b>ADDRESS EXTENSION</b>
|
|
When a mail address localpart contains the optional recip-
|
|
ient delimiter (e.g., <i>user+foo</i>@<i>domain</i>), the lookup order
|
|
becomes: <i>user+foo</i>@<i>domain</i>, <i>user</i>@<i>domain</i>, <i>user+foo</i>, <i>user</i>, and
|
|
@<i>domain</i>.
|
|
|
|
The <b><a href="postconf.5.html#propagate_unmatched_extensions">propagate_unmatched_extensions</a></b> parameter controls
|
|
whether an unmatched address extension (<i>+foo</i>) is propa-
|
|
gated to the result of table lookup.
|
|
|
|
<b>REGULAR EXPRESSION TABLES</b>
|
|
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 <a href="regexp_table.5.html"><b>regexp_table</b>(5)</a> or <a href="pcre_table.5.html"><b>pcre_table</b>(5)</a>.
|
|
|
|
Each pattern is a regular expression that is applied to
|
|
the entire address being looked up. Thus, <i>user@domain</i> mail
|
|
addresses are not broken up into their <i>user</i> and <i>@domain</i>
|
|
constituent parts, nor is <i>user+foo</i> broken up into <i>user</i> and
|
|
<i>foo</i>.
|
|
|
|
Patterns are applied in the order as specified in the
|
|
table, 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 <b>$1</b>, <b>$2</b> and so on.
|
|
|
|
<b>TCP-BASED TABLES</b>
|
|
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
|
|
<b>tcp_table</b>(5). This feature is not available in Postfix
|
|
version 2.1.
|
|
|
|
Each lookup operation uses the entire address once. Thus,
|
|
<i>user@domain</i> mail addresses are not broken up into their
|
|
<i>user</i> and <i>@domain</i> constituent parts, nor is <i>user+foo</i> broken
|
|
up into <i>user</i> and <i>foo</i>.
|
|
|
|
Results are the same as with indexed file lookups.
|
|
|
|
<b>BUGS</b>
|
|
The table format does not understand quoting conventions.
|
|
|
|
<b>CONFIGURATION PARAMETERS</b>
|
|
The following <b>main.cf</b> parameters are especially relevant.
|
|
The text below provides only a parameter summary. See
|
|
<a href="postconf.5.html">postconf(5)</a> for more details including examples.
|
|
|
|
<b><a href="postconf.5.html#canonical_maps">canonical_maps</a></b>
|
|
List of canonical mapping tables.
|
|
|
|
<b><a href="postconf.5.html#recipient_canonical_maps">recipient_canonical_maps</a></b>
|
|
Address mapping lookup table for envelope and
|
|
header recipient addresses.
|
|
|
|
<b><a href="postconf.5.html#sender_canonical_maps">sender_canonical_maps</a></b>
|
|
Address mapping lookup table for envelope and
|
|
header sender addresses.
|
|
|
|
<b><a href="postconf.5.html#propagate_unmatched_extensions">propagate_unmatched_extensions</a></b>
|
|
A list of address rewriting or forwarding mecha-
|
|
nisms that propagate an address extension from the
|
|
original address to the result. Specify zero or
|
|
more of <b>canonical</b>, <b>virtual</b>, <b>alias</b>, <b>forward</b>, or
|
|
<b>include</b>.
|
|
|
|
Other parameters of interest:
|
|
|
|
<b><a href="postconf.5.html#inet_interfaces">inet_interfaces</a></b>
|
|
The network interface addresses that this system
|
|
receives mail on. You need to stop and start Post-
|
|
fix when this parameter changes.
|
|
|
|
<b><a href="postconf.5.html#proxy_interfaces">proxy_interfaces</a></b>
|
|
Other interfaces that this machine receives mail on
|
|
by way of a proxy agent or network address transla-
|
|
tor.
|
|
|
|
<b><a href="postconf.5.html#masquerade_classes">masquerade_classes</a></b>
|
|
List of address classes subject to masquerading:
|
|
zero or more of <b>envelope_sender</b>, <b>envelope_recipi-</b>
|
|
<b>ent</b>, <b>header_sender</b>, <b>header_recipient</b>.
|
|
|
|
<b><a href="postconf.5.html#masquerade_domains">masquerade_domains</a></b>
|
|
List of domains that hide their subdomain struc-
|
|
ture.
|
|
|
|
<b><a href="postconf.5.html#masquerade_exceptions">masquerade_exceptions</a></b>
|
|
List of user names that are not subject to address
|
|
masquerading.
|
|
|
|
<b><a href="postconf.5.html#mydestination">mydestination</a></b>
|
|
List of domains that this mail system considers
|
|
local.
|
|
|
|
<b><a href="postconf.5.html#myorigin">myorigin</a></b>
|
|
The domain that is appended to locally-posted mail.
|
|
|
|
<b><a href="postconf.5.html#owner_request_special">owner_request_special</a></b>
|
|
Give special treatment to <b>owner-</b><i>xxx</i> and <i>xxx</i><b>-request</b>
|
|
addresses.
|
|
|
|
<b>SEE ALSO</b>
|
|
<a href="cleanup.8.html">cleanup(8)</a>, canonicalize and enqueue mail
|
|
<a href="postmap.1.html">postmap(1)</a>, Postfix lookup table manager
|
|
<a href="postconf.5.html">postconf(5)</a>, configuration parameters
|
|
<a href="virtual.5.html">virtual(5)</a>, virtual aliasing
|
|
|
|
<b>README FILES</b>
|
|
<a href="DATABASE_README.html">DATABASE_README</a>, Postfix lookup table overview
|
|
<a href="ADDRESS_REWRITING_README.html">ADDRESS_REWRITING_README</a>, address rewriting guide
|
|
|
|
<b>LICENSE</b>
|
|
The Secure Mailer license must be distributed with this
|
|
software.
|
|
|
|
<b>AUTHOR(S)</b>
|
|
Wietse Venema
|
|
IBM T.J. Watson Research
|
|
P.O. Box 704
|
|
Yorktown Heights, NY 10598, USA
|
|
|
|
CANONICAL(5)
|
|
</pre> </body> </html>
|