• NAME
  
  mailpost - Feed an e-mail message into a newsgroup
• SYNOPSIS
  
  mailpost [-hn] [-a addr] [-b database] [-c wait-time] [-d distribution] [-f addr] [-m mailing-list] [-o output-command] [-p port] [-r addr] [-x header[:header...]] newsgroups
• DESCRIPTION
  
  The mailpost program reads a properly formatted e-mail message from stdin and feeds it to inews for posting to a news server.  newsgroups is a whitespace-separated list of group names to which to post the article (at least one newsgroup must be specified).
  
  Before feeding the article to inews, it checks that the article has not been seen before, and it changes some headers (cleans up some address headers, removes X-Trace: and X-Complaints-To:, and puts <(>CW"X-" in front of unknown headers).
  
  If the article has been seen before (mailpost records the Message-ID of each article it handles), then the article will be silently dropped.  Other errors will cause the article to be mailed to the newsmaster (selected at configure time and defaulting to <(>CW"usenet").
  
  Normally, mailpost is run by sendmail(8) via an alias entry:
  
  
      local-mail-wreck-bikes: "|<pathbin in inn.conf>/mailpost
          -b /var/tmp -d local local.mail.rec.bicycles.racing"
  
  
  
  Instead of /var/tmp, the mail spool directory can be specified, or any other directory where the mailpost process has write access.
• OPTIONS
  

  "-a

  If the -a flag is used, the value given is added to the article as an Approved: header.

  "-b

  If the -b flag is used, then it defines the location of the database used to store the Message-IDs of articles sent on.  This is to prevent articles looping around if a news-to-mail gateway sends them back here.  This option may be required if the mailpost process does not have write access to the news temporary directory.  The default value is pathtmp as set in inn.conf.

  "-c

  The -c flag indicates a length of time to sleep before posting.  If duplicate messages are received in this interval (by any instance of mailpost using the same database), the article is only posted once, but with Newsgroups: header modified to crosspost the article to all indicated groups.  The units for wait-time are seconds; a reasonable value may be anywhere from tens to hundreds of seconds, or even higher, depending on how long mail can be delayed on its way to your system.

  "-d

  If the -d flag is used, the value given is added to the article as a Distribution: header.

  "-f

  The -f flag is a synonym for the -r flag.

  "-h"

  Print usage information and exit.

  "-m

  If the -m flag is used, the value given is added to the article in a Mailing-List: header, if such a header doesn't already exist.

  "-n"

  If the -n flag is used, neither an article is posted nor a mail is sent in case an error occurs.  Everything is written to the standard output.

  "-o

  Specifies the program to which the resulting article processed by mailpost should be sent.  For debugging purpose, <(>CW"-o cat" can be used.  The default value is <(>CW"inews -S -h".

  "-p

  Specifies the port on which nnrpd is listening, used for article posting. If given, -p is passed along to inews.

  "-r

  A heuristic is used to determine a reasonable value for the Path: header. The -r flag indicates what to use if no other value can be determined.

  "-x

  A colon-separated list of additional headers which should be treated as known headers; these headers will be passed through to inews without having <(>CW"X-" prepended. Known headers are:
      Approved
      Content-*
      Date
      Distribution
      From
      Mailing-List
      Message-ID
      MIME-*
      References
      Return-Path
      Sender
      Subject
  
  

• FILES
  

  "pathbin/mailpost"

  The Perl script itself used to feed an e-mail message to a newsgroup.

  "pathtmp/mailpost-msgid.dir

  The default database files which record previously seen Message-IDs.

• HISTORY
  
  Written by Paul Vixie long ago and then hacked up by James Brister for INN integration.
  
  $Id: mailpost.8 8330 2009-02-19 20:41:04Z iulius $
• SEE ALSO
  
  active(5) , inews(1) , inn.conf(5) , nnrpd(8) , uwildmat(3) .

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