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_exit
__syscall
 
FreeBSD/Linux/UNIX General Commands Manual
Hypertext Man Pages
sendmail
 
SENDMAIL(1)							   SENDMAIL(1)



NAME
       sendmail - Postfix to Sendmail compatibility interface

SYNOPSIS
       sendmail [option ...] [recipient ...]

       mailq
       sendmail -bp

       newaliases
       sendmail -I

DESCRIPTION
       The Postfix sendmail(1) command implements the Postfix to Sendmail com-
       patibility interface.  For the  sake  of  compatibility	with  existing
       applications,  some  Sendmail  command-line  options are recognized but
       silently ignored.

       By default, Postfix sendmail(1) reads a	message  from  standard  input
       until  EOF  or  until  it  reads  a  line  with only a . character, and
       arranges for delivery.  Postfix sendmail(1) relies on  the  postdrop(1)
       command to create a queue file in the maildrop directory.

       Specific  command aliases are provided for other common modes of opera-
       tion:

       mailq  List the mail queue. Each entry shows the queue file ID, message
	      size,  arrival  time, sender, and the recipients that still need
	      to be delivered.	If mail could not be delivered upon  the  last
	      attempt, the reason for failure is shown. This mode of operation
	      is implemented by executing the postqueue(1) command.

       newaliases
	      Initialize the alias database.  If no input  file  is  specified
	      (with  the  -oA  option,	see  below), the program processes the
	      file(s) specified with the alias_database configuration  parame-
	      ter.   If  no alias database type is specified, the program uses
	      the type specified with the default_database_type  configuration
	      parameter.  This mode of operation is implemented by running the
	      postalias(1) command.

	      Note: it may take a minute or so before an alias database update
	      becomes  visible.  Use the "postfix reload" command to eliminate
	      this delay.

       These and other features can be selected by specifying the  appropriate
       combination  of	command-line  options. Some features are controlled by
       parameters in the main.cf configuration file.

       The following options are recognized:

       -Am (ignored)

       -Ac (ignored)
	      Postfix sendmail uses the same configuration file regardless  of
	      whether or not a message is an initial submission.

       -B body_type
	      The message body MIME type: 7BIT or 8BITMIME.

       -bd    Go  into	daemon	mode. This mode of operation is implemented by
	      executing the "postfix start" command.

       -bh (ignored)

       -bH (ignored)
	      Postfix has no persistent host status database.

       -bi    Initialize alias database. See the newaliases command above.

       -bm    Read mail from standard input and arrange for delivery.  This is
	      the default mode of operation.

       -bp    List the mail queue. See the mailq command above.

       -bs    Stand-alone  SMTP  server mode. Read SMTP commands from standard
	      input, and write responses to standard output.   In  stand-alone
	      SMTP  server  mode,  mail relaying and other access controls are
	      disabled by default. To enable them,  run  the  process  as  the
	      mail_owner user.

	      This  mode  of  operation is implemented by running the smtpd(8)
	      daemon.

       -bv    Do not collect or deliver a  message.  Instead,  send  an  email
	      report  after  verifying each recipient address.	This is useful
	      for testing address rewriting and routing configurations.

	      This feature is available in Postfix version 2.1 and later.

       -C config_file (ignored)
	      The path name of the  sendmail.cf  file.	Postfix  configuration
	      files are kept in the /usr/local/etc/postfix directory.

       -F full_name
	      Set  the	sender full name. This is used only with messages that
	      have no From: message header.

       -f sender
	      Set the envelope sender  address.  This  is  the	address  where
	      delivery problems are sent to. With Postfix versions before 2.1,
	      the  Errors-To:  message	header	overrides  the	error	return
	      address.

       -G (ignored)
	      Gateway  (relay)	submission, as opposed to initial user submis-
	      sion.

       -h hop_count (ignored)
	      Hop count limit. Use the hopcount_limit configuration  parameter
	      instead.

       -I     Initialize alias database. See the newaliases command above.

       -i     When  reading  a message from standard input, don't treat a line
	      with only a . character as the end of input.

       -L label (ignored)
	      The logging label. Use the syslog_name  configuration  parameter
	      instead.

       -m (ignored)
	      Backwards compatibility.

       -N dsn (ignored)
	      Delivery	status	notification  control. Currently, Postfix does
	      not implement DSN.

       -n (ignored)
	      Backwards compatibility.

       -oAalias_database
	      Non-default alias database. Specify pathname  or	type:pathname.
	      See postalias(1) for details.

       -O option=value (ignored)
	      Backwards compatibility.

       -o7 (ignored)

       -o8 (ignored)
	      To  send 8-bit or binary content, use an appropriate MIME encap-
	      sulation and specify the appropriate -B command-line option.

       -oi    When reading a message from standard input, don't treat  a  line
	      with only a . character as the end of input.

       -om (ignored)
	      The sender is never eliminated from alias etc. expansions.

       -o x value (ignored)
	      Set  option x to value. Use the equivalent configuration parame-
	      ter in main.cf instead.

       -r sender
	      Set the envelope sender  address.  This  is  the	address  where
	      delivery problems are sent to. With Postfix versions before 2.1,
	      the  Errors-To:  message	header	overrides  the	error	return
	      address.

       -R return_limit (ignored)
	      Limit  the  size of bounced mail. Use the bounce_size_limit con-
	      figuration parameter instead.

       -q     Attempt to deliver all queued mail. This is implemented by  exe-
	      cuting the postqueue(1) command.

	      Warning:	flushing  undeliverable mail frequently will result in
	      poor delivery performance of all other mail.

       -qinterval (ignored)
	      The interval between queue runs. Use the queue_run_delay config-
	      uration parameter instead.

       -qRsite
	      Schedule	immediate  delivery of all mail that is queued for the
	      named site. This option accepts only site names that are	eligi-
	      ble  for the "fast flush" service, and is implemented by execut-
	      ing the postqueue(1) command.  See flush(8) for more information
	      about the "fast flush" service.

       -qSsite
	      This  command  is  not implemented. Use the slower "sendmail -q"
	      command instead.

       -t     Extract recipients from message headers. These are added to  any
	      recipients specified on the command line.

	      With Postfix versions prior to 2.1, this option requires that no
	      recipient addresses are specified on the command line.

       -U (ignored)
	      Initial user submission.

       -V     Variable Envelope Return Path. Given an envelope sender  address
	      of  the  form  owner-listname@origin, each recipient user@domain
	      receives mail with a personalized envelope sender address.

	      By default, the personalized envelope sender address  is	owner-
	      listname+user=domain@origin.  The default + and = characters are
	      configurable  with  the  default_verp_delimiters	 configuration
	      parameter.

	      This feature is available in Postfix version 1.1 and later.

       -Vxy   As  -V,  but  uses  x  and  y  as the VERP delimiter characters,
	      instead of the characters specified with the default_verp_delim-
	      iters configuration parameter.

       -v     Send an email report of the first delivery attempt (Postfix ver-
	      sions 2.1 and later). Mail delivery always happens in the  back-
	      ground.  When multiple -v options are given, enable verbose log-
	      ging for debugging purposes.

       -X log_file (ignored)
	      Log mailer traffic. Use the debug_peer_list and debug_peer_level
	      configuration parameters instead.

SECURITY
       By design, this program is not set-user (or group) id. However, it must
       handle data from untrusted users  or  untrusted	machines.   Thus,  the
       usual precautions need to be taken against malicious inputs.

DIAGNOSTICS
       Problems are logged to syslogd(8) and to the standard error stream.

ENVIRONMENT
       MAIL_CONFIG
	      Directory with Postfix configuration files.

       MAIL_VERBOSE
	      Enable verbose logging for debugging purposes.

       MAIL_DEBUG
	      Enable debugging with an external command, as specified with the
	      debugger_command configuration parameter.

CONFIGURATION PARAMETERS
       The following main.cf parameters are especially relevant to  this  pro-
       gram.   The  text  below  provides  only a parameter summary. See post-
       conf(5) for more details including examples.

TROUBLE SHOOTING CONTROLS
       The DEBUG_README file gives examples of how to trouble shoot a  Postfix
       system.

       debugger_command (empty)
	      The external command to execute when a Postfix daemon program is
	      invoked with the -D option.

       debug_peer_level (2)
	      The increment in verbose logging level when a remote  client  or
	      server matches a pattern in the debug_peer_list parameter.

       debug_peer_list (empty)
	      Optional	list  of  remote  client or server hostname or network
	      address  patterns  that  cause  the  verbose  logging  level  to
	      increase by the amount specified in $debug_peer_level.

ACCESS CONTROLS
       Available in Postfix version 2.2 and later:

       authorized_flush_users (static:anyone)
	      List of users who are authorized to flush the queue.

       authorized_mailq_users (static:anyone)
	      List of users who are authorized to view the queue.

       authorized_submit_users (static:anyone)
	      List  of	users who are authorized to submit mail with the send-
	      mail(1) command (and with the privileged postdrop(1) helper com-
	      mand).

RESOURCE AND RATE CONTROLS
       bounce_size_limit (50000)
	      The  maximal  amount  of original message text that is sent in a
	      non-delivery notification.

       fork_attempts (5)
	      The maximal number of attempts to fork() a child process.

       fork_delay (1s)
	      The delay between attempts to fork() a child process.

       hopcount_limit (50)
	      The maximal number of Received:  message headers that is allowed
	      in the primary message headers.

       queue_run_delay (1000s)
	      The time between deferred queue scans by the queue manager.

FAST FLUSH CONTROLS
       The  ETRN_README file describes configuration and operation details for
       the Postfix "fast flush" service.

       fast_flush_domains ($relay_domains)
	      Optional list of destinations that are eligible for per-destina-
	      tion logfiles with mail that is queued to those destinations.

VERP CONTROLS
       The  VERP_README  file describes configuration and operation details of
       Postfix support for variable envelope return path addresses.

       default_verp_delimiters (+=)
	      The two default VERP delimiter characters.

       verp_delimiter_filter (-=+)
	      The characters Postfix accepts as VERP delimiter	characters  on
	      the Postfix sendmail(1) command line and in SMTP commands.

MISCELLANEOUS CONTROLS
       alias_database (see 'postconf -d' output)
	      The  alias databases for local(8) delivery that are updated with
	      "newaliases" or with "sendmail -bi".

       command_directory (see 'postconf -d' output)
	      The location of all postfix administrative commands.

       config_directory (see 'postconf -d' output)
	      The default location of the Postfix main.cf and  master.cf  con-
	      figuration files.

       daemon_directory (see 'postconf -d' output)
	      The directory with Postfix support programs and daemon programs.

       default_database_type (see 'postconf -d' output)
	      The default database type for use in newaliases(1), postalias(1)
	      and postmap(1) commands.

       delay_warning_time (0h)
	      The  time after which the sender receives the message headers of
	      mail that is still queued.

       enable_errors_to (no)
	      Report mail delivery errors to the address  specified  with  the
	      non-standard  Errors-To: message header, instead of the envelope
	      sender address (this feature is removed  with  Postfix  2.2,  is
	      turned  off by default with Postfix 2.1, and is always turned on
	      with older Postfix versions).

       mail_owner (postfix)
	      The UNIX system account that owns the  Postfix  queue  and  most
	      Postfix daemon processes.

       queue_directory (see 'postconf -d' output)
	      The location of the Postfix top-level queue directory.

       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,	"post-
	      fix/smtpd".

       trigger_timeout (10s)
	      The  time  limit	for sending a trigger to a Postfix daemon (for
	      example, the pickup(8) or qmgr(8) daemon).

FILES
       /var/spool/postfix, mail queue
       /usr/local/etc/postfix, configuration files

SEE ALSO
       pickup(8), mail pickup daemon
       qmgr(8), queue manager
       smtpd(8), SMTP server
       flush(8), fast flush service
       postsuper(1), queue maintenance
       postalias(1), create/update/query alias database
       postdrop(1), mail posting utility
       postfix(1), mail system control
       postqueue(1), mail queue control
       syslogd(8), system logging

README_FILES
       Use "postconf readme_directory" or
       "postconf html_directory" to locate this information.
       DEBUG_README, Postfix debugging howto
       ETRN_README, Postfix ETRN howto
       VERP_README, Postfix VERP howto

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



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