sendmail(8) - phpMan

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SSMTP(8)                             System Manager's Manual                             SSMTP(8)

       ssmtp, sendmail - send a message using smtp

       ssmtp [ flags ] [ address ... ]
       /usr/lib/sendmail [ flags ] [ address ... ]

       ssmtp is a send-only sendmail emulator for machines which normally pick their mail up from
       a centralized mailhub (via pop, imap, nfs mounts or other means).  It provides  the  func-
       tionality  required for humans and programs to send mail via the standard or /usr/bin/mail
       user agents.

       It accepts a mail stream on standard input with recipients specified on the  command  line
       and  synchronously  forwards  the  message to the mail transfer agent of a mailhub for the
       mailhub MTA to process. Failed messages are placed in dead.letter  in  the  sender's  home

       Config  files  allow one to specify the address to receive mail from root, daemon, etc.; a
       default mailhub; a default domain to be used in From: lines; per-user From: addresses  and
       mailhub names; and aliases in the traditional format used by sendmail for the /etc/aliases

       It does not attempt to provide all the functionality of sendmail: it is intended  for  use
       where  other  programs are the primary means of at last mail delivery.  It is usefull with
       pop/imap, or to simulate the Sun shared  mail  spool  option  for  non-Sun  machines,  for
       machines  whose  sendmails  are too difficult (or various) to configure, for machines with
       known disfeatures in their sendmails or for ones where there are ``mysterious problems''.

       It does not honor .forwards, which have to be done on the recieving host.   It  especially
       does not deliver to pipelines.

       Most  sendmail  options  are  irrelevent to sSMTP. Those marked ``ignored'' or ``default''
       have no effect on mail transfer.  Those marked ``unsupported'' are  fatal  errors.   Those
       marked  ``simulated''  are  not  errors, but the result is for the program to exit with an
       informative message. A sort of fatal non-error.

       -4     Forces ssmtp to use IPv4 addresses only.

       -6     Forces ssmtp to use IPv6 addresses only.

              Specifies username for SMTP authentication.

              Specifies password for SMTP authentication.

              Specifies mechanism for SMTP authentication. (Only LOGIN and CRAM-MD5)

       -ba    (unsupported) ARPANET mode. All input lines must end with a LINEFEED, and all  mes-
              sages  will  be  generated  with  a  CR-LF  at  the  end.  Also,  the ``From:'' and
              ``Sender:'' fields are examined for the name of the sender.

       -bd    (unsupported) Run as a daemon.

       -bi    (ignored) Initialise the alias database.

       -bm    (default) Deliver mail in the usual way.

       -bp    (simulated) Print a summary of the mail queue.

       -bs    (unsupported) Read SMTP commands from stdin.

       -bt    (unsupported) Run in address test mode.

       -bv    (unsupported) Verify names only.

       -bz    (unsupported) Create the configuration freeze file.

       -Cfile Use alternate configuration file.

       -dX    Set debugging value to X.

       -E     (ignored) Don't trust userid of sender.

              Set the full name of the sender.

       -fname Sets the name of the ``from'' person. This option is valid only if no From: line is
              specified within the header of the email.

       -h     (ignored) Set the hop count to N.

       -m     (ignored) Ignore originator in alias.

       -Mid   (ignored) Attempt to deliver the queued message with message-id id.

       -N dsn (ignored) Set delivery status notification conditions to dsn.

       -n     (default) Do not do aliasing.

              (ignored) Use alternate alias file.

       -oc    (ignored) Delay ``expensive'' connections.

       -od    (ignored)  Set  the  delivery  mode to interactive/synchronous, background or queue
              (Always interactive).

       -oD    (ignored) Run newaliases if required.

       -oe    (ignored) Set error processing to mail, write, print or quit. (Always print).

              (ignored) The mode to use when creating temporary files.

       -of    (ignored) Save UNIX-system-style ``From'' lines at the front of messages.

       -ogN   (ignored) Set group ID to use when calling mailers.

              (ignored) Set SMTP help file.

       -oi    (default) Do not take dots on a line by themselves as a message terminator.

       -oLn   (ignored) The log level.

       -om    (default) Send to ``me'' (the sender) also if in an alias.

       -oo    (unsupported) If set, this message may have old style headers.

              (ignored) Select the directory in which to queue messages.

              (ignored) The timeout on reads.

              (ignored) Save statistics in the named file.

       -os    (ignored) Always instantiate the queue.

              (ignored) Set timeout on messages.

              (ignored) Set the name of the time zone.

       -ouN   (ignored) Set the default user id for mailers.

              (simulated) Process the queue.

       -rname Same as -f.

              (ignored) Process queue for recipient.

       -R return
              (ignored) Set the amount of the message to be returned if the message bounces.

       -t     Read  message, searching for recipients. ``To:'', `Cc:'', and ``Bcc:''  lines  will
              be  scanned  for  people  to send to. Any addresses  in  the  argument list will be
              suppressed (not supported).

       -v     Go into verbose mode.

       -V     Say version and quit.

       A reverse alias gives the From: address placed on a user's outgoing messages and  (option-
       ally) the mailhub these messages will be sent through. Example:

          root:jdoe AT

       Messages root sends will be identified as from jdoe AT and sent through

        /etc/ssmtp/ssmtp.conf - configuration file
        /etc/ssmtp/revaliases - reverse aliases file
        /etc/aliases - aliases file

       RFC821, RFC822, ssmtp.conf(5).

       Matt  Ryan  (mryan AT  Hugo  Haas  (hugo AT  Christoph  Lameter  (clame-
       ter AT Dave Collier-Brown (davecb AT

       sSMTP does not support exception lists to the -t option (never seen it used).

       sSMTP will fail if the mailhub is unreachable.

                                   Last change: 4 February 2005                          SSMTP(8)

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