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mailq.postfix (1)
  • >> mailq.postfix (1) ( Linux man: Команды и прикладные программы пользовательского уровня )


    Postfix to Sendmail compatibility interface


    sendmail [option ...] [recipient ...]
    sendmail -bp
    sendmail -I


    The sendmail program implements the Postfix to Sendmail compatibility interface. For the sake of compatibility with existing applications, some Sendmail command-line options are recognized but silently ignored.

    By default, sendmail reads a message from standard input until EOF or until it reads a line with only a . character, and arranges for delivery. sendmail 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:

    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.
    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 command-line options. Some features are controlled by parameters in the 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.
    -C config_file (ignored :-)
    The path name of the file. Postfix configuration files are kept in /etc/postfix.
    -F full_name
    Set the sender full name. This is used only with messages that have no From: message header.
    -G (ignored)
    Gateway (relay) submission, as opposed to initial user submission.
    Initialize alias database. See the newaliases command above.
    -L label (ignored)
    The logging label. Use the syslog_name configuration parameter instead.
    -N dsn (ignored)
    Delivery status notification control. Currently, Postfix does not implement DSN.
    -R return_limit (ignored)
    Limit the size of bounced mail. Use the bounce_size_limit configuration parameter instead.
    -X log_file (ignored)
    Log mailer traffic. Use the debug_peer_list and debug_peer_level configuration parameters instead.
    -U (ignored)
    Initial user submission.
    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.

    As -V, but uses x and y as the VERP delimiter characters, instead of the characters specified with the default_verp_delimiters configuration parameter.
    Go into daemon mode. This mode of operation is implemented by executing the postfix start command.
    Initialize alias database. See the newaliases command above.
    Read mail from standard input and arrange for delivery. This is the default mode of operation.
    List the mail queue. See the mailq command above.
    Stand-alone SMTP server mode. Read SMTP commands from standard input, and write responses to standard output. In stand-alone SMTP server mode, UCE restrictions and 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.

    -f sender
    Set the envelope sender address. This is the address where delivery problems are sent to, unless the message contains an Errors-To: message header.
    -h hop_count (ignored)
    Hop count limit. Use the hopcount_limit configuration parameter instead.
    When reading a message from standard input, don't treat a line with only a . character as the end of input.
    -m (ignored)
    Backwards compatibility.
    -n (ignored)
    Backwards compatibility.
    Non-default alias database. Specify pathname or type:pathname. See postalias(1) for details.
    -o7 (ignored)
    -o8 (ignored)
    To send 8-bit or binary content, use an appropriate MIME encapsulation and specify the appropriate -B command-line option.
    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 parameter in instead.
    -r sender
    Set the envelope sender address. This is the address where delivery problems are sent to, unless the message contains an Errors-To: message header.
    Attempt to deliver all queued mail. This is implemented by executing the postqueue(1) command.
    -qinterval (ignored)
    The interval between queue runs. Use the queue_run_delay configuration parameter instead.
    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 information about the "fast flush" service.
    This command is not implemented. Use the slower sendmail -q command instead.
    Extract recipients from message headers. This requires that no recipients be specified on the command line.
    Enable verbose logging for debugging purposes. Multiple -v options make the software increasingly verbose. For compatibility with mailx and other mail submission software, a single -v option produces no output.


    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


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


    Directory with Postfix configuration files.
    Enable verbose logging for debugging purposes.
    Enable debugging with an external command, as specified with the debugger_command configuration parameter.


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


    See the Postfix file for syntax details and for
    default values. Use the postfix reload command after a
    configuration change.
    Default alias database(s) for newaliases. The default value for this parameter is system-specific.
    The amount of original message context that is sent along with a non-delivery notification.
    Default alias etc. database type. On many UNIX systems the default type is either dbm or hash.
    Command that is executed after a Postfix daemon has initialized.
    Increment in verbose logging level when a remote host matches a pattern in the debug_peer_list parameter.
    List of domain or network patterns. When a remote host matches a pattern, increase the verbose logging level by the amount specified in the debug_peer_level parameter.
    The VERP delimiter characters that are used when the -V command line option is specified without delimiter characters.
    List of domains that will receive "fast flush" service (default: all domains that this system is willing to relay mail to). This list specifies the domains that Postfix accepts in the SMTP ETRN request and in the sendmail -qR command.
    Number of attempts to fork() a process before giving up.
    Delay in seconds between successive fork() attempts.
    Limit the number of Received: message headers.
    The owner of the mail queue and of most Postfix processes.
    Directory with Postfix support commands.
    Directory with Postfix daemon programs.
    Top-level directory of the Postfix queue. This is also the root directory of Postfix daemons that run chrooted.
    The time between successive scans of the deferred queue.
    The characters that Postfix accepts as VERP delimiter characters.


    pickup(8) mail pickup daemon
    postsuper(1) queue maintenance
    postalias(1) maintain alias database
    postdrop(1) mail posting utility
    postfix(1) mail system control
    postqueue(1) mail queue control
    qmgr(8) queue manager
    smtpd(8) SMTP server
    flush(8) fast flush service
    syslogd(8) system logging


    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




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