Provided by: postfix_2.2.10-1_i386 bug

NAME

       trivial-rewrite - Postfix address rewriting and resolving daemon

SYNOPSIS

       trivial-rewrite [generic Postfix daemon options]

DESCRIPTION

       The  trivial-rewrite(8)  daemon processes three types of client service
       requests:

       rewrite context address
              Rewrite an address to standard form, according  to  the  address
              rewriting context:

              local  Append  the  domain  names  specified  with  $myorigin or
                     $mydomain to incomplete addresses; do  swap_bangpath  and
                     allow_percent_hack  processing  as  described  below, and
                     strip source routed  addresses  (@site,@site:user@domain)
                     to user@domain form.

              remote Append     the     domain     name     specified     with
                     $remote_header_rewrite_domain  to  incomplete  addresses.
                     Otherwise  the  result  is identical to that of the local
                     address rewriting context.  This  prevents  Postfix  from
                     appending  the  local  domain to spam from poorly written
                     remote clients.

       resolve address
              Resolve an address to a (transport, nexthop,  recipient,  flags)
              quadruple. The meaning of the results is as follows:

              transport
                     The  delivery agent to use. This is the first field of an
                     entry in the master.cf file.

              nexthop
                     The  host  to  send  to  and  optional  delivery   method
                     information.

              recipient
                     The  envelope  recipient  address  that  is  passed on to
                     nexthop.

              flags  The address class, whether the address requires relaying,
                     whether the address has problems, and whether the request
                     failed.

       verify address
              Resolve an address for address verification purposes.

SERVER PROCESS MANAGEMENT

       The trivial-rewrite(8) servers run under control by the Postfix  master
       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  $max_use clients of after $max_idle seconds of idle
       time.

STANDARDS

       None. The command does not interact with the outside world.

SECURITY

       The trivial-rewrite(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.

DIAGNOSTICS

       Problems and transactions are logged to syslogd(8).

CONFIGURATION PARAMETERS

       On busy mail systems a long time  may  pass  before  a  main.cf  change
       affecting  trivial-rewrite(8)  is  picked  up. Use the command "postfix
       reload" to speed up a change.

       The text below provides only a parameter summary. See  postconf(5)  for
       more details including examples.

COMPATIBILITY CONTROLS

       resolve_dequoted_address (yes)
              Resolve  a  recipient  address  safely  instead of correctly, by
              looking inside quotes.

       resolve_null_domain (no)
              Resolve an address that ends in the "@" null domain  as  if  the
              local  hostname were specified, instead of rejecting the address
              as invalid.

ADDRESS REWRITING CONTROLS

       myorigin ($myhostname)
              The domain name that locally-posted mail appears to  come  from,
              and that locally posted mail is delivered to.

       allow_percent_hack (yes)
              Enable the rewriting of the form "user%domain" to "user@domain".

       append_at_myorigin (yes)
              With locally submitted mail, append the string  "@$myorigin"  to
              mail addresses without domain information.

       append_dot_mydomain (yes)
              With  locally  submitted mail, append the string ".$mydomain" to
              addresses that have no ".domain" information.

       recipient_delimiter (empty)
              The  separator  between  user  names  and   address   extensions
              (user+foo).

       swap_bangpath (yes)
              Enable the rewriting of "site!user" into "user@site".

       Available in Postfix 2.2 and later:

       remote_header_rewrite_domain (empty)
              Don’t  rewrite  message  headers from remote clients at all when
              this parameter  is  empty;  otherwise,  rewrite  remote  message
              headers  and  append  the  specified  domain  name to incomplete
              addresses.

ROUTING CONTROLS

       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.

       local_transport (local:$myhostname)
              The default mail  delivery  transport  for  domains  that  match
              $mydestination, $inet_interfaces or $proxy_interfaces.

       virtual_transport (virtual)
              The  default  mail delivery transport for domains that match the
              $virtual_mailbox_domains parameter value.

       relay_transport (relay)
              The default mail delivery transport and next-hop information for
              domains that match the $relay_domains parameter value.

       default_transport (smtp)
              The  default  mail  delivery  transport  for domains that do not
              match   $mydestination,   $inet_interfaces,   $proxy_interfaces,
              $virtual_alias_domains,       $virtual_mailbox_domains,       or
              $relay_domains.

       parent_domain_matches_subdomains (see β€β€™postconf -dβ€β€™ output)
              What  Postfix  features   match   subdomains   of   "domain.tld"
              automatically,  instead  of  requiring an explicit ".domain.tld"
              pattern.

       relayhost (empty)
              The default host to send non-local mail  to  when  no  entry  is
              matched in the optional transport(5) table.

       transport_maps (empty)
              Optional  lookup  tables with mappings from recipient address to
              (message delivery transport, next-hop destination).

ADDRESS VERIFICATION CONTROLS

       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:

       address_verify_local_transport ($local_transport)
              Overrides  the  local_transport  parameter  setting  for address
              verification probes.

       address_verify_virtual_transport ($virtual_transport)
              Overrides the virtual_transport parameter  setting  for  address
              verification probes.

       address_verify_relay_transport ($relay_transport)
              Overrides  the  relay_transport  parameter  setting  for address
              verification probes.

       address_verify_default_transport ($default_transport)
              Overrides the default_transport parameter  setting  for  address
              verification probes.

       address_verify_relayhost ($relayhost)
              Overrides   the   relayhost   parameter   setting   for  address
              verification probes.

       address_verify_transport_maps ($transport_maps)
              Overrides  the  transport_maps  parameter  setting  for  address
              verification probes.

MISCELLANEOUS CONTROLS

       config_directory (see β€β€™postconf -dβ€β€™ output)
              The  default  location  of  the  Postfix  main.cf  and master.cf
              configuration files.

       daemon_timeout (18000s)
              How much time a Postfix daemon process  may  take  to  handle  a
              request before it is terminated by a built-in watchdog timer.

       empty_address_recipient (MAILER-DAEMON)
              The recipient of mail addressed to the null address.

       ipc_timeout (3600s)
              The  time  limit  for  sending  or receiving information over an
              internal communication channel.

       max_idle (100s)
              The maximum amount of time that an idle Postfix  daemon  process
              waits for the next service request before exiting.

       max_use (100)
              The  maximal  number  of  connection  requests  before a Postfix
              daemon process terminates.

       relocated_maps (empty)
              Optional lookup tables with new contact information for users or
              domains that no longer exist.

       process_id (read-only)
              The process ID of a Postfix command or daemon process.

       process_name (read-only)
              The process name of a Postfix command or daemon process.

       queue_directory (see β€β€™postconf -dβ€β€™ output)
              The location of the Postfix top-level queue directory.

       show_user_unknown_table_name (yes)
              Display  the  name  of the recipient table in the "User unknown"
              responses.

       syslog_facility (mail)
              The syslog facility of Postfix logging.

       syslog_name (postfix)
              The mail system name that is prepended to the  process  name  in
              syslog   records,   so   that   "smtpd"  becomes,  for  example,
              "postfix/smtpd".

       Available in Postfix version 2.0 and later:

       helpful_warnings (yes)
              Log  warnings  about  problematic  configuration  settings,  and
              provide helpful suggestions.

SEE ALSO

       postconf(5), configuration parameters
       transport(5), transport table format
       relocated(5), format of the "user has moved" table
       master(8), process manager
       syslogd(8), system logging

README FILES

       Use  "postconf readme_directory" or "postconf html_directory" to locate
       this information.
       ADDRESS_CLASS_README, Postfix address classes howto
       ADDRESS_VERIFICATION_README, Postfix address verification

LICENSE

       The Secure Mailer license must be distributed with this software.

AUTHOR(S)

       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

                                                            TRIVIAL-REWRITE(8)