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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:46:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:46:30 +0000 |
| commit | b5896ba9f6047e7031e2bdee0622d543e11a6734 (patch) | |
| tree | fd7b460593a2fee1be579bec5697e6d887ea3421 /html/generic.5.html | |
| parent | Initial commit. (diff) | |
| download | postfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.tar.xz postfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.zip | |
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'html/generic.5.html')
| -rw-r--r-- | html/generic.5.html | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/html/generic.5.html b/html/generic.5.html new file mode 100644 index 0000000..17d31d5 --- /dev/null +++ b/html/generic.5.html @@ -0,0 +1,231 @@ +<!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 - generic(5) </title> +</head> <body> <pre> +GENERIC(5) GENERIC(5) + +<b>NAME</b> + generic - Postfix generic table format + +<b>SYNOPSIS</b> + <b>postmap /etc/postfix/generic</b> + + <b>postmap -q "</b><i>string</i><b>" /etc/postfix/generic</b> + + <b>postmap -q - /etc/postfix/generic</b> <<i>inputfile</i> + +<b>DESCRIPTION</b> + The optional <a href="generic.5.html"><b>generic</b>(5)</a> table specifies an address mapping that applies + when mail is delivered. This is the opposite of <a href="canonical.5.html"><b>canonical</b>(5)</a> mapping, + which applies when mail is received. + + Typically, one would use the <a href="generic.5.html"><b>generic</b>(5)</a> table on a system that does not + have a valid Internet domain name and that uses something like <i>localdo-</i> + <i>main.local</i> instead. The <a href="generic.5.html"><b>generic</b>(5)</a> table is then used by the <a href="smtp.8.html"><b>smtp</b>(8)</a> + client to transform local mail addresses into valid Internet mail + addresses when mail has to be sent across the Internet. See the EXAM- + PLE section at the end of this document. + + The <a href="generic.5.html"><b>generic</b>(5)</a> 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). + + Normally, the <a href="generic.5.html"><b>generic</b>(5)</a> 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/generic</b>" 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 regular-expression map + where patterns are given as regular expressions, or lookups can be + directed to TCP-based server. In those case, the lookups are done in a + slightly different way as described below under "REGULAR EXPRESSION + TABLES" or "TCP-BASED TABLES". + +<b>CASE FOLDING</b> + 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 <a href="regexp_table.5.html">regexp</a>: or <a href="pcre_table.5.html">pcre</a>: whose lookup fields can match both upper and + lower case. + +<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 corre- + sponding <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 logical line. + +<b>TABLE SEARCH ORDER</b> + With lookups from indexed files such as DB or DBM, or from networked + tables such as NIS, LDAP or SQL, each <i>user</i>@<i>domain</i> 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. + + <i>user</i>@<i>domain address</i> + Replace <i>user</i>@<i>domain</i> by <i>address</i>. This form has the highest prece- + dence. + + <i>user address</i> + Replace <i>user</i>@<i>site</i> 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">mydestination</a></b>, or when it is listed in + $<b><a href="postconf.5.html#inet_interfaces">inet_interfaces</a></b> or $<b><a href="postconf.5.html#proxy_interfaces">proxy_interfaces</a></b>. + + @<i>domain address</i> + Replace other addresses in <i>domain</i> by <i>address</i>. This form has the + lowest precedence. + +<b>RESULT ADDRESS REWRITING</b> + The lookup result is subject to address rewriting: + + <b>o</b> When the result has the form @<i>otherdomain</i>, the result becomes + the same <i>user</i> in <i>otherdomain</i>. + + <b>o</b> When "<b><a href="postconf.5.html#append_at_myorigin">append_at_myorigin</a>=yes</b>", append "<b>@$<a href="postconf.5.html#myorigin">myorigin</a></b>" to addresses + without "@domain". + + <b>o</b> When "<b><a href="postconf.5.html#append_dot_mydomain">append_dot_mydomain</a>=yes</b>", append "<b>.$<a href="postconf.5.html#mydomain">mydomain</a></b>" to addresses + without ".domain". + +<b>ADDRESS EXTENSION</b> + When a mail address localpart contains the optional recipient 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 propagated 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 bro- + ken 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 interpo- + lated 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 description of the TCP + client/server lookup protocol, see <a href="tcp_table.5.html"><b>tcp_table</b>(5)</a>. This feature is not + available up to and including Postfix version 2.4. + + 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> con- + stituent 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>EXAMPLE</b> + The following shows a generic mapping with an indexed file. When mail + is sent to a remote host via SMTP, this replaces <i>his@localdomain.local</i> + by his ISP mail address, replaces <i>her@localdomain.local</i> by her ISP mail + address, and replaces other local addresses by his ISP account, with an + address extension of <i>+local</i> (this example assumes that the ISP supports + "+" style address extensions). + + /etc/postfix/<a href="postconf.5.html">main.cf</a>: + <a href="postconf.5.html#smtp_generic_maps">smtp_generic_maps</a> = <a href="DATABASE_README.html#types">hash</a>:/etc/postfix/generic + + /etc/postfix/generic: + his@localdomain.local hisaccount@hisisp.example + her@localdomain.local heraccount@herisp.example + @localdomain.local hisaccount+local@hisisp.example + + Execute the command "<b>postmap /etc/postfix/generic</b>" whenever the table + is changed. Instead of <b>hash</b>, some systems use <b>dbm</b> database files. To + find out what tables your system supports use the command "<b>postconf</b> + <b>-m</b>". + +<b>BUGS</b> + The table format does not understand quoting conventions. + +<b>CONFIGURATION PARAMETERS</b> + The following <a href="postconf.5.html"><b>main.cf</b></a> parameters are especially relevant. The text + below provides only a parameter summary. See <a href="postconf.5.html"><b>postconf</b>(5)</a> for more + details including examples. + + <b><a href="postconf.5.html#smtp_generic_maps">smtp_generic_maps</a></b> + Address mapping lookup table for envelope and header sender and + recipient addresses while delivering mail via SMTP. + + <b><a href="postconf.5.html#propagate_unmatched_extensions">propagate_unmatched_extensions</a></b> + A list of address rewriting or forwarding mechanisms that propa- + gate 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>for-</b> + <b>ward</b>, <b>include</b>, or <b>generic</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 Postfix 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 translator. + + <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="postmap.1.html">postmap(1)</a>, Postfix lookup table manager + <a href="postconf.5.html">postconf(5)</a>, configuration parameters + <a href="smtp.8.html">smtp(8)</a>, Postfix SMTP client + +<b>README FILES</b> + <a href="ADDRESS_REWRITING_README.html">ADDRESS_REWRITING_README</a>, address rewriting guide + <a href="DATABASE_README.html">DATABASE_README</a>, Postfix lookup table overview + <a href="STANDARD_CONFIGURATION_README.html">STANDARD_CONFIGURATION_README</a>, configuration examples + +<b>LICENSE</b> + The Secure Mailer license must be distributed with this software. + +<b>HISTORY</b> + A genericstable feature appears in the Sendmail MTA. + + This feature is available in Postfix 2.2 and later. + +<b>AUTHOR(S)</b> + 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 + + GENERIC(5) +</pre> </body> </html> |