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SPOST(8)			    [mmh-0.4]				SPOST(8)

NAME
     spost - feed a message to sendmail

SYNOPSIS

     spost [-verbose | -noverbose] file [-Version] [-help]

DESCRIPTION
     Spost is the program called by send to feed the message in file to sendmail
     for delivery.  In fact, many of the features attributed to send in its man-
     ual page are performed by spost, with send acting as a preprocessor.  Thus,
     it  is  spost  which  parses the various header fields, appends `From:' and
     `Date:' lines, and finally feeds the message to the MTA.	Spost  will  not
     normally be called directly by the user.

     Spost  searches the `To:', `Cc:', `Bcc:', `Dcc:', `Fcc:', and `Resent-xxx:'
     header lines of the specified message for destination addresses,

     Spost invokes sendmail with all recipients, except the blind ones (`Bcc:'),
     as command line arguments:
	    sendmail -i [-v] recipients ...

     If a `Bcc:' field is encountered, its addresses will be used for  delivery,
     and  the  `Bcc:' field will be removed from the message sent to sighted re-
     cipients.	The blind recipients will receive a  newly  constructed  message
     with  a copy of the original message attached.  MIME rules are used for en-
     capsulation.  (spost invokes send to send the Bcc message.)

     If a `Dcc:' field is encountered, the field will be removed before  sending
     the  message. The Dcc recipient will receive the message as well, but with-
     out being mentioned in the recipient headers.

     In contrast to Bcc, the Dcc recipient receives the same original message as
     all the sighted reciepients, whereas the Bcc recipient receives a	special,
     newly  constructed  message,  which contains the original message as an at-
     tachment.

     Bcc is probably a good choice for a message with both sighted and invisible
     reciepients (e.g. inform someone privately about the message  being  sent).
     Dcc  is  probably	a good choice for a message to a group of only invisible
     recipients (e.g. invite to a party).

     The `Aliasfile' profile entry can be used to specify one or more files that
     spost should take aliases from.

     Aliasing is done on any address field. Those are:	`From:',  `To:',  `Cc:',
     `Bcc:' and `Dcc:', or the `Resent-xxx:' versions of these fields.

     The  -verbose switch enables informational messages.  For example, the `-v'
     switch will be added to the sendmail invocation.

     If you specify a `From:' line manually in the message  draft,  it	will  be
     used as provided.	If there is no `From:' line in the draft, spost uses the
     `Default-From'  profile  entry,  if  set.	 Otherwise  spost constructs the
     `From:' line from the user's login name and the full name	from  the  GECOS
     field of the passwd file.	An example is `From: Dan Harkless <dan>'.

     If  you  set  the $SIGNATURE environment variable.  Its value overrides the
     full name from the GECOS field.

     A `Sender:' header will be added in two cases.  First, if the `From:'  line
     given  in	the  draft  contains one or more addresses, of which none is the
     user's own one, as defined by `Alternate-Mailboxes'.  (The  sender  address
     will  then  be determined equally as described above for the absent `From:'
     header.)  Second, if the `From:' line contains multiple addresses, of which
     at least one is the user's own address. The first own address will be  used
     as the sender address.

     Note  that  this  applies	equally to `Resent-From:' lines in messages sent
     with dist.

     Spost tries to fully qualify the addresses in every  address  field.   Your
     MTA is supposed to add the correct domain, if there is none after aliasing.

     The draft is filed to the folders in the Fcc headers by refile.

FILES
     None

PROFILE COMPONENTS
     Aliasfile: 	  For default alias files
     Default-From:	  The default From header
     Alternate-Mailboxes: The user's addresses
     Sendmail:		  The path name to the sendmail program.

SEE ALSO
     send(1), mh-mail(5), mh-alias(5), mh-tailor(5), refile(1), Standard for the
     Format of ARPA Internet Text Messages (RFC-822)

DEFAULTS
     `-noverbose'

CONTEXT
     None

BUGS
     None

HISTORY
     The  spost  in mmh-0.1 used sendmail's -t flag to have sendmail extract the
     recipients from the message headers. Now, it passes the recipients as  com-
     mand  line  arguments. This provides better compatibility to other sendmail
     implementations.

MH.6.8				   2019-01-06				SPOST(8)
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