Home Man
Today's Posts

Linux & Unix Commands - Search Man Pages

Linux 2.6 - man page for sendmail (linux section 1)

SENDMAIL(1)			     General Commands Manual			      SENDMAIL(1)

       sendmail - Postfix to Sendmail compatibility interface

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

       sendmail -bp

       sendmail -I

       The  Postfix  sendmail(1)  command implements the Postfix to Sendmail compatibility inter-
       face.  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 operation:

       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. The queue
	      ID string is followed by an optional status character:

	      *      The message is in the active queue, i.e. the message is selected for  deliv-

	      !      The  message  is in the hold queue, i.e. no further delivery attempt will be
		     made until the mail is taken off hold.

	      This mode of operation is implemented by executing the postqueue(1) command.

	      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 parameter.	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 com-
       mand-line options. Some features are controlled by parameters in the main.cf configuration

       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  "post-
	      fix 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

	      This feature is available in Postfix version 2.1 and later.

       -C config_file

       -C config_dir
	      The  path name of the Postfix main.cf file, or of its parent directory. This infor-
	      mation is ignored with Postfix versions before 2.3.

	      With all Postfix versions, you can specify a directory pathname with the	MAIL_CON-
	      FIG environment variable to override the location of configuration files.

       -F full_name
	      Set the sender full name. This overrides the NAME environment variable, and 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     Gateway (relay) submission, as opposed to initial user submission.  Either  do  not
	      rewrite  addresses  at all, or update incomplete addresses with the domain informa-
	      tion specified with remote_header_rewrite_domain.

	      This option is ignored before Postfix version 2.3.

       -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 .  char-
	      acter as the end of input.

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

       -m (ignored)
	      Backwards compatibility.

       -N dsn (default: 'delay, failure')
	      Delivery	status	notification  control. Specify either a comma-separated list with
	      one or more of failure (send notification when delivery fails), delay (send notifi-
	      cation when delivery is delayed), or success (send notification when the message is
	      delivered); or specify never (don't send any notifications at all).

	      This feature is available in Postfix 2.3 and later.

       -n (ignored)
	      Backwards compatibility.

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

       -O option=value (ignored)
	      Backwards compatibility.

       -o7 (ignored)

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

       -oi    When reading a message from standard input, don't treat a line with only a .  char-
	      acter 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 parameter in main.cf

       -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  configuration	parameter

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

	      Warning: flushing undeliverable mail frequently will result in poor  delivery  per-
	      formance of all other mail.

       -qinterval (ignored)
	      The  interval  between  queue runs. Use the queue_run_delay configuration parameter

	      Schedule immediate delivery of mail with the specified queue ID.	 This  option  is
	      implemented  by  executing  the postqueue(1) command, and is available with Postfix
	      version 2.4 and later.

	      Schedule immediate delivery of all mail that is queued for  the  named  site.  This
	      option  accepts only site names that are eligible for the "fast flush" service, and
	      is implemented by executing the postqueue(1) command.  See flush(8) for more infor-
	      mation about the "fast flush" service.

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

       -t     Extract  recipients  from message headers. These are added to any recipients speci-
	      fied 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 envid
	      Specify the envelope ID for notification by servers that support DSN.

	      This feature is available in Postfix 2.3 and later.

       -XV (Postfix 2.2 and earlier: -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 enve-
	      lope sender address.

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

       -XVxy (Postfix 2.2 and earlier: -Vxy)
	      As  -XV,	but uses x and y as the VERP delimiter characters, instead of the charac-
	      ters specified with the default_verp_delimiters configuration parameter.

       -v     Send an email report of the  first  delivery  attempt  (Postfix  versions  2.1  and
	      later).  Mail  delivery  always happens in the background. When multiple -v options
	      are given, enable verbose logging for debugging purposes.

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

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

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

	      Directory with Postfix configuration files.

       MAIL_VERBOSE (value does not matter)
	      Enable verbose logging for debugging purposes.

       MAIL_DEBUG (value does not matter)
	      Enable  debugging  with an external command, as specified with the debugger_command
	      configuration parameter.

       NAME   The sender full name. This is used only with messages that have  no  From:  message
	      header. See also the -F option above.

       The  following main.cf parameters are especially relevant to this program.  The text below
       provides only a parameter summary. See postconf(5) for more details including examples.

       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

       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 sendmail(1)  command  (and
	      with the privileged postdrop(1) helper command).

       bounce_size_limit (50000)
	      The  maximal amount of original message text that is sent in a non-delivery notifi-

       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 (300s)
	      The  time  between  deferred queue scans by the queue manager; prior to Postfix 2.4
	      the default value was 1000s.

       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-destination logfiles with
	      mail that is queued to those destinations.

       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 send-
	      mail(1) command line and in SMTP commands.

       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 configuration 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)

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

       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 version 2.2, is turned off by default with Postfix version 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  pro-

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

       remote_header_rewrite_domain (empty)
	      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.

       syslog_facility (mail)
	      The syslog facility of Postfix logging.

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

       /var/spool/postfix, mail queue
       /etc/postfix, configuration files

       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

       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

       The Secure Mailer license must be distributed with this software.

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


All times are GMT -4. The time now is 05:46 AM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
Show Password