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

NAME

       ssmtp, sendmail - send a message using smtp

SYNOPSIS

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

DESCRIPTION

       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 functionality 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 directory.

       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; and per-user From: addresses and mailhub names.

       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 do aliasing, which must be done either in the user agent or on the mailhub. Nor does it honor .forwards, which have to be  done
       on the recieving host.  It especially does not deliver to pipelines.

OPTIONS

       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.

       -auusername
	      Specifies username for SMTP authentication.

       -appassword
	      Specifies password for SMTP authentication.

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

       -ba    (unsupported)  ARPANET  mode.  All input lines must end with a LINEFEED, and all messages 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.

       -Ffullname
	      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.

       -oAfile
	      (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).

       -oFmode
	      (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.

       -oHfile
	      (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.

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

       -ortimeout
	      (ignored) The timeout on reads.

       -oSfile
	      (ignored) Save statistics in the named file.

       -os    (ignored) Always instantiate the queue.

       -oTtime
	      (ignored) Set timeout on messages.

       -otstz,dtz
	      (ignored) Set the name of the time zone.

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

       -q[time]
	      (simulated) Process the queue.

       -rname Same as -f.

       -Rstring
	      (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.

REVERSE ALIASES

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

	  root:jdoe@isp.com:mail.isp.com

       Messages root sends will be identified as from jdoe@isp.com and sent through mail.isp.com.

FILES

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

SEE ALSO

       RFC821, RFC822, ssmtp.conf(5).

AUTHORS

       Matt Ryan (mryan@debian.org) Hugo Haas (hugo@debian.org) Christoph Lameter (clameter@debian.org) Dave Collier-Brown (davecb@hobbes.ss.org)

BUGS

       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)