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<html> <head> </head> <body> <pre>
TRIVIAL-REWRITE(8) TRIVIAL-REWRITE(8)
<b>NAME</b>
trivial-rewrite - Postfix address rewriting and resolving
daemon
<b>SYNOPSIS</b>
<b>trivial-rewrite</b> [generic Postfix daemon options]
<b>DESCRIPTION</b>
The <b>trivial-rewrite</b> daemon processes two types of client
service requests:
<b>rewrite</b>
Rewrite an address to standard form. The <b>trivial-</b>
<b>rewrite</b> daemon by default appends local domain
information to unqualified addresses, swaps bang
paths to domain form, and strips source routing
information. This process is under control of sev-
eral configuration parameters (see below).
<b>resolve</b>
Resolve an address to a (<i>transport</i>, <i>nexthop</i>, <i>recip-</i>
<i>ient</i>) triple. The meaning of the results is as fol-
lows:
<i>transport</i>
The delivery agent to use. This is the first
field of an entry in the <b>master.cf</b> file.
<i>nexthop</i>
The host to send to. For local delivery this
is an empty string.
<i>recipient</i>
The envelope recipient address that is
passed on to <i>nexthop</i>.
The <b>trivial-rewrite</b> daemon by default only distin-
guishes between local and non-local mail. For finer
control over mail routing, use the optional <a href="transport.5.html"><b>trans-</b>
<b>port</b>(5)</a> lookup table.
This program expects to be run from the <a href="master.8.html"><b>master</b>(8)</a> process
manager.
<b>STANDARDS</b>
None. The command does not interact with the outside
world.
<b>SECURITY</b>
The <b>trivial-rewrite</b> daemon is not security sensitive. By
default, this daemon does not talk to remote or local
users. It can run at a fixed low privilege in a chrooted
environment.
1
TRIVIAL-REWRITE(8) TRIVIAL-REWRITE(8)
<b>DIAGNOSTICS</b>
Problems and transactions are logged to <b>syslogd</b>(8).
<b>BUGS</b>
<b>CONFIGURATION</b> <b>PARAMETERS</b>
The following <b>main.cf</b> parameters are especially relevant
to this program. See the Postfix <b>main.cf</b> file for syntax
details and for default values. Use the <b>postfix</b> <b>reload</b>
command after a configuration change.
<b>Miscellaneous</b>
<b>inet</b><i>_</i><b>interfaces</b>
The network interfaces that this mail system
receives mail on. This information is used to
determine if <i>user</i>@[<i>net.work.addr.ess</i>] is local or
remote.
<b>mydestination</b>
List of domains that this machine considers local.
<b>myorigin</b>
The domain that locally-posted mail appears to come
from.
<b>Rewriting</b>
<b>allow</b><i>_</i><b>percent</b><i>_</i><b>hack</b>
Rewrite <i>user</i>%<i>domain</i> to <i>user</i>@<i>domain</i>.
<b>append</b><i>_</i><b>at</b><i>_</i><b>myorigin</b>
Rewrite <i>user</i> to <i>user</i>@$<b>myorigin</b>.
<b>append</b><i>_</i><b>dot</b><i>_</i><b>mydomain</b>
Rewrite <i>user</i>@<i>host</i> to <i>user</i>@<i>host</i>.$<b>mydomain</b>.
<b>swap</b><i>_</i><b>bangpath</b>
Rewrite <i>site</i>!<i>user</i> to <i>user</i>@<i>site</i>.
<b>Routing</b>
<b>default</b><i>_</i><b>transport</b>
The default transport to use when no transport is
explicitly given in the <a href="transport.5.html"><b>transport</b>(5)</a> table.
<b>relayhost</b>
The default host to send mail to when no entry is
matched in the <a href="transport.5.html"><b>transport</b>(5)</a> table.
When no <b>relayhost</b> is specified, mail is routed
directly to the destination's mail exchanger.
<b>transport</b><i>_</i><b>maps</b>
List of tables with <i>domain</i> to (<i>transport,</i> <i>nexthop</i>)
mappings.
2
TRIVIAL-REWRITE(8) TRIVIAL-REWRITE(8)
<b>SEE</b> <b>ALSO</b>
<a href="master.8.html">master(8)</a> process manager
syslogd(8) system logging
<a href="transport.5.html">transport(5)</a> transport table format
<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
3
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