319 lines
17 KiB
HTML
319 lines
17 KiB
HTML
<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html> <head>
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<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
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<title> Postfix manual - trivial-rewrite(8) </title>
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</head> <body> <pre>
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TRIVIAL-REWRITE(8) TRIVIAL-REWRITE(8)
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<b>NAME</b>
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trivial-rewrite - Postfix address rewriting and resolving
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daemon
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<b>SYNOPSIS</b>
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<b>trivial-rewrite</b> [generic Postfix daemon options]
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<b>DESCRIPTION</b>
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The <a href="trivial-rewrite.8.html"><b>trivial-rewrite</b>(8)</a> daemon processes three types of
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client service requests:
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<b>rewrite</b> <i>context address</i>
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Rewrite an address to standard form, according to
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the address rewriting context:
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<b>local</b> Append the domain names specified with <b>$<a href="postconf.5.html#myorigin">myo</a>-</b>
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<b><a href="postconf.5.html#myorigin">rigin</a></b> or <b>$<a href="postconf.5.html#mydomain">mydomain</a></b> to incomplete addresses;
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do <b><a href="postconf.5.html#swap_bangpath">swap_bangpath</a></b> and <b><a href="postconf.5.html#allow_percent_hack">allow_percent_hack</a></b> pro-
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cessing as described below, and strip source
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routed addresses (<i>@site,@site:user@domain</i>)
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to <i>user@domain</i> form.
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<b>remote</b> Append the domain name specified with
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<b>$<a href="postconf.5.html#remote_header_rewrite_domain">remote_header_rewrite_domain</a></b> to incomplete
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addresses. Otherwise the result is identical
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to that of the <b>local</b> address rewriting con-
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text. This prevents Postfix from appending
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the <a href="ADDRESS_CLASS_README.html#local_domain_class">local domain</a> to spam from poorly written
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remote clients.
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<b>resolve</b> <i>sender address</i>
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Resolve the address to a (<i>transport</i>, <i>nexthop</i>,
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<i>recipient</i>, <i>flags</i>) quadruple. The meaning of the
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results is as follows:
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<i>transport</i>
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The delivery agent to use. This is the first
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field of an entry in the <a href="master.5.html"><b>master.cf</b></a> file.
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<i>nexthop</i>
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The host to send to and optional delivery
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method information.
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<i>recipient</i>
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The envelope recipient address that is
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passed on to <i>nexthop</i>.
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<i>flags</i> The address class, whether the address
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requires relaying, whether the address has
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problems, and whether the request failed.
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<b>verify</b> <i>sender address</i>
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Resolve the address for address verification pur-
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poses.
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<b>SERVER PROCESS MANAGEMENT</b>
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The <a href="trivial-rewrite.8.html"><b>trivial-rewrite</b>(8)</a> servers run under control by the
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Postfix master server. Each server can handle multiple
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simultaneous connections. When all servers are busy while
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a client connects, the master creates a new server
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process, provided that the trivial-rewrite server process
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limit is not exceeded. Each trivial-rewrite server termi-
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nates after serving at least <b>$<a href="postconf.5.html#max_use">max_use</a></b> clients of after
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<b>$<a href="postconf.5.html#max_idle">max_idle</a></b> seconds of idle time.
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<b>STANDARDS</b>
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None. The command does not interact with the outside
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world.
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<b>SECURITY</b>
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The <a href="trivial-rewrite.8.html"><b>trivial-rewrite</b>(8)</a> daemon is not security sensitive.
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By default, this daemon does not talk to remote or local
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users. It can run at a fixed low privilege in a chrooted
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environment.
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<b>DIAGNOSTICS</b>
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Problems and transactions are logged to <b>syslogd</b>(8).
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<b>CONFIGURATION PARAMETERS</b>
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On busy mail systems a long time may pass before a <a href="postconf.5.html"><b>main.cf</b></a>
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change affecting <a href="trivial-rewrite.8.html"><b>trivial-rewrite</b>(8)</a> is picked up. Use the
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command "<b>postfix reload</b>" to speed up a change.
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The text below provides only a parameter summary. See
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<a href="postconf.5.html"><b>postconf</b>(5)</a> for more details including examples.
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<b>COMPATIBILITY CONTROLS</b>
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<b><a href="postconf.5.html#resolve_dequoted_address">resolve_dequoted_address</a> (yes)</b>
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Resolve a recipient address safely instead of cor-
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rectly, by looking inside quotes.
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<b><a href="postconf.5.html#resolve_null_domain">resolve_null_domain</a> (no)</b>
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Resolve an address that ends in the "@" null domain
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as if the local hostname were specified, instead of
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rejecting the address as invalid.
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<b><a href="postconf.5.html#resolve_numeric_domain">resolve_numeric_domain</a> (no)</b>
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Resolve "user@ipaddress" as "user@[ipaddress]",
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instead of rejecting the address as invalid.
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<b>ADDRESS REWRITING CONTROLS</b>
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<b><a href="postconf.5.html#myorigin">myorigin</a> ($<a href="postconf.5.html#myhostname">myhostname</a>)</b>
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The domain name that locally-posted mail appears to
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come from, and that locally posted mail is deliv-
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ered to.
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<b><a href="postconf.5.html#allow_percent_hack">allow_percent_hack</a> (yes)</b>
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Enable the rewriting of the form "user%domain" to
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"user@domain".
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<b><a href="postconf.5.html#append_at_myorigin">append_at_myorigin</a> (yes)</b>
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With locally submitted mail, append the string
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"@$<a href="postconf.5.html#myorigin">myorigin</a>" to mail addresses without domain
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information.
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<b><a href="postconf.5.html#append_dot_mydomain">append_dot_mydomain</a> (yes)</b>
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With locally submitted mail, append the string
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".$<a href="postconf.5.html#mydomain">mydomain</a>" to addresses that have no ".domain"
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information.
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<b><a href="postconf.5.html#recipient_delimiter">recipient_delimiter</a> (empty)</b>
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The separator between user names and address exten-
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sions (user+foo).
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<b><a href="postconf.5.html#swap_bangpath">swap_bangpath</a> (yes)</b>
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Enable the rewriting of "site!user" into
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"user@site".
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Available in Postfix 2.2 and later:
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<b><a href="postconf.5.html#remote_header_rewrite_domain">remote_header_rewrite_domain</a> (empty)</b>
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Don't rewrite message headers from remote clients
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at all when this parameter is empty; otherwise, re-
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write message headers and append the specified
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domain name to incomplete addresses.
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<b>ROUTING CONTROLS</b>
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The following is applicable to Postfix version 2.0 and
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later. Earlier versions do not have support for: <a href="postconf.5.html#virtual_transport">vir</a>-
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<a href="postconf.5.html#virtual_transport">tual_transport</a>, <a href="postconf.5.html#relay_transport">relay_transport</a>, <a href="postconf.5.html#virtual_alias_domains">virtual_alias_domains</a>,
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<a href="postconf.5.html#virtual_mailbox_domains">virtual_mailbox_domains</a> or <a href="postconf.5.html#proxy_interfaces">proxy_interfaces</a>.
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<b><a href="postconf.5.html#local_transport">local_transport</a> (<a href="local.8.html">local</a>:$<a href="postconf.5.html#myhostname">myhostname</a>)</b>
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The default mail delivery transport and next-hop
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destination for final delivery to domains listed
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with <a href="postconf.5.html#mydestination">mydestination</a>, and for [ipaddress] destina-
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tions that match $<a href="postconf.5.html#inet_interfaces">inet_interfaces</a> or $<a href="postconf.5.html#proxy_interfaces">proxy_inter</a>-
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<a href="postconf.5.html#proxy_interfaces">faces</a>.
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<b><a href="postconf.5.html#virtual_transport">virtual_transport</a> (virtual)</b>
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The default mail delivery transport and next-hop
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destination for final delivery to domains listed
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with $<a href="postconf.5.html#virtual_mailbox_domains">virtual_mailbox_domains</a>.
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<b><a href="postconf.5.html#relay_transport">relay_transport</a> (relay)</b>
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The default mail delivery transport and next-hop
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destination for remote delivery to domains listed
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with $<a href="postconf.5.html#relay_domains">relay_domains</a>.
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<b><a href="postconf.5.html#default_transport">default_transport</a> (smtp)</b>
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The default mail delivery transport and next-hop
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destination for destinations that do not match
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$<a href="postconf.5.html#mydestination">mydestination</a>, $<a href="postconf.5.html#inet_interfaces">inet_interfaces</a>, $<a href="postconf.5.html#proxy_interfaces">proxy_inter</a>-
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<a href="postconf.5.html#proxy_interfaces">faces</a>, $<a href="postconf.5.html#virtual_alias_domains">virtual_alias_domains</a>, $<a href="postconf.5.html#virtual_mailbox_domains">virtual_mail-
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box_domains</a>, or $<a href="postconf.5.html#relay_domains">relay_domains</a>.
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<b><a href="postconf.5.html#parent_domain_matches_subdomains">parent_domain_matches_subdomains</a> (see 'postconf -d' out-</b>
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<b>put)</b>
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What Postfix features match subdomains of
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"domain.tld" automatically, instead of requiring an
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explicit ".domain.tld" pattern.
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<b><a href="postconf.5.html#relayhost">relayhost</a> (empty)</b>
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The next-hop destination of non-local mail; over-
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rides non-<a href="ADDRESS_CLASS_README.html#local_domain_class">local domains</a> in recipient addresses.
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<b><a href="postconf.5.html#transport_maps">transport_maps</a> (empty)</b>
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Optional lookup tables with mappings from recipient
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address to (message delivery transport, next-hop
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destination).
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Available in Postfix version 2.3 and later:
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<b><a href="postconf.5.html#sender_dependent_relayhost_maps">sender_dependent_relayhost_maps</a> (empty)</b>
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A sender-dependent override for the global <a href="postconf.5.html#relayhost">relay</a>-
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<a href="postconf.5.html#relayhost">host</a> parameter setting.
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<b>ADDRESS VERIFICATION CONTROLS</b>
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Postfix version 2.1 introduces sender and recipient
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address verification. This feature is implemented by
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sending probe email messages that are not actually deliv-
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ered. By default, address verification probes use the
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same route as regular mail. To override specific aspects
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of message routing for address verification probes, spec-
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ify one or more of the following:
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<b><a href="postconf.5.html#address_verify_local_transport">address_verify_local_transport</a> ($<a href="postconf.5.html#local_transport">local_transport</a>)</b>
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Overrides the <a href="postconf.5.html#local_transport">local_transport</a> parameter setting for
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address verification probes.
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<b><a href="postconf.5.html#address_verify_virtual_transport">address_verify_virtual_transport</a> ($<a href="postconf.5.html#virtual_transport">virtual_transport</a>)</b>
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Overrides the <a href="postconf.5.html#virtual_transport">virtual_transport</a> parameter setting
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for address verification probes.
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<b><a href="postconf.5.html#address_verify_relay_transport">address_verify_relay_transport</a> ($<a href="postconf.5.html#relay_transport">relay_transport</a>)</b>
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Overrides the <a href="postconf.5.html#relay_transport">relay_transport</a> parameter setting for
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address verification probes.
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<b><a href="postconf.5.html#address_verify_default_transport">address_verify_default_transport</a> ($<a href="postconf.5.html#default_transport">default_transport</a>)</b>
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Overrides the <a href="postconf.5.html#default_transport">default_transport</a> parameter setting
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for address verification probes.
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<b><a href="postconf.5.html#address_verify_relayhost">address_verify_relayhost</a> ($<a href="postconf.5.html#relayhost">relayhost</a>)</b>
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Overrides the <a href="postconf.5.html#relayhost">relayhost</a> parameter setting for
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address verification probes.
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<b><a href="postconf.5.html#address_verify_transport_maps">address_verify_transport_maps</a> ($<a href="postconf.5.html#transport_maps">transport_maps</a>)</b>
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Overrides the <a href="postconf.5.html#transport_maps">transport_maps</a> parameter setting for
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address verification probes.
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Available in Postfix version 2.3 and later:
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<b><a href="postconf.5.html#address_verify_sender_dependent_relayhost_maps">address_verify_sender_dependent_relayhost_maps</a> (empty)</b>
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Overrides the <a href="postconf.5.html#sender_dependent_relayhost_maps">sender_dependent_relayhost_maps</a>
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parameter setting for address verification probes.
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<b>MISCELLANEOUS CONTROLS</b>
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<b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b>
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The default location of the Postfix <a href="postconf.5.html">main.cf</a> and
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<a href="master.5.html">master.cf</a> configuration files.
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<b><a href="postconf.5.html#daemon_timeout">daemon_timeout</a> (18000s)</b>
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How much time a Postfix daemon process may take to
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handle a request before it is terminated by a
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built-in watchdog timer.
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<b><a href="postconf.5.html#empty_address_recipient">empty_address_recipient</a> (MAILER-DAEMON)</b>
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The recipient of mail addressed to the null
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address.
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<b><a href="postconf.5.html#ipc_timeout">ipc_timeout</a> (3600s)</b>
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The time limit for sending or receiving information
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over an internal communication channel.
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<b><a href="postconf.5.html#max_idle">max_idle</a> (100s)</b>
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The maximum amount of time that an idle Postfix
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daemon process waits for the next service request
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before exiting.
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<b><a href="postconf.5.html#max_use">max_use</a> (100)</b>
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The maximal number of connection requests before a
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Postfix daemon process terminates.
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<b><a href="postconf.5.html#relocated_maps">relocated_maps</a> (empty)</b>
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Optional lookup tables with new contact information
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for users or domains that no longer exist.
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<b><a href="postconf.5.html#process_id">process_id</a> (read-only)</b>
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The process ID of a Postfix command or daemon
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process.
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<b><a href="postconf.5.html#process_name">process_name</a> (read-only)</b>
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The process name of a Postfix command or daemon
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process.
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<b><a href="postconf.5.html#queue_directory">queue_directory</a> (see 'postconf -d' output)</b>
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The location of the Postfix top-level queue direc-
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tory.
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<b><a href="postconf.5.html#show_user_unknown_table_name">show_user_unknown_table_name</a> (yes)</b>
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Display the name of the recipient table in the
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"User unknown" responses.
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<b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b>
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The syslog facility of Postfix logging.
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<b><a href="postconf.5.html#syslog_name">syslog_name</a> (postfix)</b>
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The mail system name that is prepended to the
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process name in syslog records, so that "smtpd"
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becomes, for example, "postfix/smtpd".
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Available in Postfix version 2.0 and later:
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<b><a href="postconf.5.html#helpful_warnings">helpful_warnings</a> (yes)</b>
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Log warnings about problematic configuration set-
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tings, and provide helpful suggestions.
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<b>SEE ALSO</b>
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<a href="postconf.5.html">postconf(5)</a>, configuration parameters
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<a href="transport.5.html">transport(5)</a>, transport table format
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<a href="relocated.5.html">relocated(5)</a>, format of the "user has moved" table
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<a href="master.8.html">master(8)</a>, process manager
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syslogd(8), system logging
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<b>README FILES</b>
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<a href="ADDRESS_CLASS_README.html">ADDRESS_CLASS_README</a>, Postfix address classes howto
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<a href="ADDRESS_VERIFICATION_README.html">ADDRESS_VERIFICATION_README</a>, Postfix address verification
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<b>LICENSE</b>
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The Secure Mailer license must be distributed with this
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software.
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<b>AUTHOR(S)</b>
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Wietse Venema
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IBM T.J. Watson Research
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P.O. Box 704
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Yorktown Heights, NY 10598, USA
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TRIVIAL-REWRITE(8)
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</pre> </body> </html>
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