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Diffstat (limited to 'man/man8/trivial-rewrite.8')
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diff --git a/man/man8/trivial-rewrite.8 b/man/man8/trivial-rewrite.8 new file mode 100644 index 0000000..e41da71 --- /dev/null +++ b/man/man8/trivial-rewrite.8 @@ -0,0 +1,325 @@ +.TH TRIVIAL-REWRITE 8 +.ad +.fi +.SH NAME +trivial-rewrite +\- +Postfix address rewriting and resolving daemon +.SH "SYNOPSIS" +.na +.nf +\fBtrivial\-rewrite\fR [generic Postfix daemon options] +.SH DESCRIPTION +.ad +.fi +The \fBtrivial\-rewrite\fR(8) daemon processes three types of client +service requests: +.IP "\fBrewrite \fIcontext address\fR" +Rewrite an address to standard form, according to the +address rewriting context: +.RS +.IP \fBlocal\fR +Append the domain names specified with \fB$myorigin\fR or +\fB$mydomain\fR to incomplete addresses; do \fBswap_bangpath\fR +and \fBallow_percent_hack\fR processing as described below, and +strip source routed addresses (\fI@site,@site:user@domain\fR) +to \fIuser@domain\fR form. +.IP \fBremote\fR +Append the domain name specified with +\fB$remote_header_rewrite_domain\fR to incomplete +addresses. Otherwise the result is identical to that of +the \fBlocal\fR address rewriting context. This prevents +Postfix from appending the local domain to spam from poorly +written remote clients. +.RE +.IP "\fBresolve \fIsender\fR \fIaddress\fR" +Resolve the address to a (\fItransport\fR, \fInexthop\fR, +\fIrecipient\fR, \fIflags\fR) quadruple. The meaning of +the results is as follows: +.RS +.IP \fItransport\fR +The delivery agent to use. This is the first field of an entry +in the \fBmaster.cf\fR file. +.IP \fInexthop\fR +The host to send to and optional delivery method information. +.IP \fIrecipient\fR +The envelope recipient address that is passed on to \fInexthop\fR. +.IP \fIflags\fR +The address class, whether the address requires relaying, +whether the address has problems, and whether the request failed. +.RE +.IP "\fBverify \fIsender\fR \fIaddress\fR" +Resolve the address for address verification purposes. +.SH "SERVER PROCESS MANAGEMENT" +.na +.nf +.ad +.fi +The \fBtrivial\-rewrite\fR(8) servers run under control by +the Postfix master(8) +server. Each server can handle multiple simultaneous connections. +When all servers are busy while a client connects, the master +creates a new server process, provided that the trivial\-rewrite +server process limit is not exceeded. +Each trivial\-rewrite server terminates after +serving at least \fB$max_use\fR clients of after \fB$max_idle\fR +seconds of idle time. +.SH "STANDARDS" +.na +.nf +.ad +.fi +None. The command does not interact with the outside world. +.SH "SECURITY" +.na +.nf +.ad +.fi +The \fBtrivial\-rewrite\fR(8) daemon is not security sensitive. +By default, this daemon does not talk to remote or local users. +It can run at a fixed low privilege in a chrooted environment. +.SH DIAGNOSTICS +.ad +.fi +Problems and transactions are logged to \fBsyslogd\fR(8) +or \fBpostlogd\fR(8). +.SH "CONFIGURATION PARAMETERS" +.na +.nf +.ad +.fi +On busy mail systems a long time may pass before a \fBmain.cf\fR +change affecting \fBtrivial\-rewrite\fR(8) is picked up. Use the command +"\fBpostfix reload\fR" to speed up a change. + +The text below provides only a parameter summary. See +\fBpostconf\fR(5) for more details including examples. +.SH "COMPATIBILITY CONTROLS" +.na +.nf +.ad +.fi +.IP "\fBresolve_dequoted_address (yes)\fR" +Resolve a recipient address safely instead of correctly, by +looking inside quotes. +.PP +Available with Postfix version 2.1 and later: +.IP "\fBresolve_null_domain (no)\fR" +Resolve an address that ends in the "@" null domain as if the +local hostname were specified, instead of rejecting the address as +invalid. +.PP +Available with Postfix version 2.3 and later: +.IP "\fBresolve_numeric_domain (no)\fR" +Resolve "user@ipaddress" as "user@[ipaddress]", instead of +rejecting the address as invalid. +.PP +Available with Postfix version 2.5 and later: +.IP "\fBallow_min_user (no)\fR" +Allow a sender or recipient address to have `\-' as the first +character. +.SH "ADDRESS REWRITING CONTROLS" +.na +.nf +.ad +.fi +.IP "\fBmyorigin ($myhostname)\fR" +The domain name that locally\-posted mail appears to come +from, and that locally posted mail is delivered to. +.IP "\fBallow_percent_hack (yes)\fR" +Enable the rewriting of the form "user%domain" to "user@domain". +.IP "\fBappend_at_myorigin (yes)\fR" +With locally submitted mail, append the string "@$myorigin" to mail +addresses without domain information. +.IP "\fBappend_dot_mydomain (Postfix >= 3.0: no, Postfix < 3.0: yes)\fR" +With locally submitted mail, append the string ".$mydomain" to +addresses that have no ".domain" information. +.IP "\fBrecipient_delimiter (empty)\fR" +The set of characters that can separate an email address +localpart, user name, or a .forward file name from its extension. +.IP "\fBswap_bangpath (yes)\fR" +Enable the rewriting of "site!user" into "user@site". +.PP +Available in Postfix 2.2 and later: +.IP "\fBremote_header_rewrite_domain (empty)\fR" +Don't rewrite message headers from remote clients at all when +this parameter is empty; otherwise, rewrite message headers and +append the specified domain name to incomplete addresses. +.SH "ROUTING CONTROLS" +.na +.nf +.ad +.fi +The following is applicable to Postfix version 2.0 and later. +Earlier versions do not have support for: virtual_transport, +relay_transport, virtual_alias_domains, virtual_mailbox_domains +or proxy_interfaces. +.IP "\fBlocal_transport (local:$myhostname)\fR" +The default mail delivery transport and next\-hop destination +for final delivery to domains listed with mydestination, and for +[ipaddress] destinations that match $inet_interfaces or $proxy_interfaces. +.IP "\fBvirtual_transport (virtual)\fR" +The default mail delivery transport and next\-hop destination for +final delivery to domains listed with $virtual_mailbox_domains. +.IP "\fBrelay_transport (relay)\fR" +The default mail delivery transport and next\-hop destination for +remote delivery to domains listed with $relay_domains. +.IP "\fBdefault_transport (smtp)\fR" +The default mail delivery transport and next\-hop destination for +destinations that do not match $mydestination, $inet_interfaces, +$proxy_interfaces, $virtual_alias_domains, $virtual_mailbox_domains, +or $relay_domains. +.IP "\fBparent_domain_matches_subdomains (see 'postconf -d' output)\fR" +A list of Postfix features where the pattern "example.com" also +matches subdomains of example.com, +instead of requiring an explicit ".example.com" pattern. +.IP "\fBrelayhost (empty)\fR" +The next\-hop destination(s) for non\-local mail; overrides non\-local +domains in recipient addresses. +.IP "\fBtransport_maps (empty)\fR" +Optional lookup tables with mappings from recipient address to +(message delivery transport, next\-hop destination). +.PP +Available in Postfix version 2.3 and later: +.IP "\fBsender_dependent_relayhost_maps (empty)\fR" +A sender\-dependent override for the global relayhost parameter +setting. +.PP +Available in Postfix version 2.5 and later: +.IP "\fBempty_address_relayhost_maps_lookup_key (<>)\fR" +The sender_dependent_relayhost_maps search string that will be +used instead of the null sender address. +.PP +Available in Postfix version 2.7 and later: +.IP "\fBempty_address_default_transport_maps_lookup_key (<>)\fR" +The sender_dependent_default_transport_maps search string that +will be used instead of the null sender address. +.IP "\fBsender_dependent_default_transport_maps (empty)\fR" +A sender\-dependent override for the global default_transport +parameter setting. +.SH "ADDRESS VERIFICATION CONTROLS" +.na +.nf +.ad +.fi +Postfix version 2.1 introduces sender and recipient address verification. +This feature is implemented by sending probe email messages that +are not actually delivered. +By default, address verification probes use the same route +as regular mail. To override specific aspects of message +routing for address verification probes, specify one or more +of the following: +.IP "\fBaddress_verify_local_transport ($local_transport)\fR" +Overrides the local_transport parameter setting for address +verification probes. +.IP "\fBaddress_verify_virtual_transport ($virtual_transport)\fR" +Overrides the virtual_transport parameter setting for address +verification probes. +.IP "\fBaddress_verify_relay_transport ($relay_transport)\fR" +Overrides the relay_transport parameter setting for address +verification probes. +.IP "\fBaddress_verify_default_transport ($default_transport)\fR" +Overrides the default_transport parameter setting for address +verification probes. +.IP "\fBaddress_verify_relayhost ($relayhost)\fR" +Overrides the relayhost parameter setting for address verification +probes. +.IP "\fBaddress_verify_transport_maps ($transport_maps)\fR" +Overrides the transport_maps parameter setting for address verification +probes. +.PP +Available in Postfix version 2.3 and later: +.IP "\fBaddress_verify_sender_dependent_relayhost_maps ($sender_dependent_relayhost_maps)\fR" +Overrides the sender_dependent_relayhost_maps parameter setting for address +verification probes. +.PP +Available in Postfix version 2.7 and later: +.IP "\fBaddress_verify_sender_dependent_default_transport_maps ($sender_dependent_default_transport_maps)\fR" +Overrides the sender_dependent_default_transport_maps parameter +setting for address verification probes. +.SH "MISCELLANEOUS CONTROLS" +.na +.nf +.ad +.fi +.IP "\fBconfig_directory (see 'postconf -d' output)\fR" +The default location of the Postfix main.cf and master.cf +configuration files. +.IP "\fBdaemon_timeout (18000s)\fR" +How much time a Postfix daemon process may take to handle a +request before it is terminated by a built\-in watchdog timer. +.IP "\fBempty_address_recipient (MAILER\-DAEMON)\fR" +The recipient of mail addressed to the null address. +.IP "\fBipc_timeout (3600s)\fR" +The time limit for sending or receiving information over an internal +communication channel. +.IP "\fBmax_idle (100s)\fR" +The maximum amount of time that an idle Postfix daemon process waits +for an incoming connection before terminating voluntarily. +.IP "\fBmax_use (100)\fR" +The maximal number of incoming connections that a Postfix daemon +process will service before terminating voluntarily. +.IP "\fBrelocated_maps (empty)\fR" +Optional lookup tables with new contact information for users or +domains that no longer exist. +.IP "\fBprocess_id (read\-only)\fR" +The process ID of a Postfix command or daemon process. +.IP "\fBprocess_name (read\-only)\fR" +The process name of a Postfix command or daemon process. +.IP "\fBqueue_directory (see 'postconf -d' output)\fR" +The location of the Postfix top\-level queue directory. +.IP "\fBshow_user_unknown_table_name (yes)\fR" +Display the name of the recipient table in the "User unknown" +responses. +.IP "\fBsyslog_facility (mail)\fR" +The syslog facility of Postfix logging. +.IP "\fBsyslog_name (see 'postconf -d' output)\fR" +A prefix that is prepended to the process name in syslog +records, so that, for example, "smtpd" becomes "prefix/smtpd". +.PP +Available in Postfix version 2.0 and later: +.IP "\fBhelpful_warnings (yes)\fR" +Log warnings about problematic configuration settings, and provide +helpful suggestions. +.PP +Available in Postfix 3.3 and later: +.IP "\fBservice_name (read\-only)\fR" +The master.cf service name of a Postfix daemon process. +.SH "SEE ALSO" +.na +.nf +postconf(5), configuration parameters +transport(5), transport table format +relocated(5), format of the "user has moved" table +master(8), process manager +postlogd(8), Postfix logging +syslogd(8), system logging +.SH "README FILES" +.na +.nf +.ad +.fi +Use "\fBpostconf readme_directory\fR" or +"\fBpostconf html_directory\fR" to locate this information. +.na +.nf +ADDRESS_CLASS_README, Postfix address classes howto +ADDRESS_VERIFICATION_README, Postfix address verification +.SH "LICENSE" +.na +.nf +.ad +.fi +The Secure Mailer license must be distributed with this software. +.SH "AUTHOR(S)" +.na +.nf +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 |