mailpost - Feed an e-mail message into a newsgroup
] [-a addr
] [-b database
[ -c wait-time
] [ -d distribution
] [ -m mailing-list
] [ -o
] [ -p port
] [-r addr
] [ -x
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 "X-" in front of
If the article has been seen before ( mailpost
records the Message-ID of
each article it handles), then the article will be dropped with a non-zero
error status. Other errors will cause the article to be mailed to the
newsmaster (selected at configure time and defaulting to "usenet").
is run by sendmail
(8) via an alias entry:
local-mail-wreck-bikes: "|<pathbin in inn.conf>/mailpost
-b /var/tmp -t /var/tmp -d local local.mail.rec.bicycles.racing"
flags are useful to change the directories used by
by default. As a matter of fact, though it is recommended to
as the news user, it is as often as not run as another
user, for instance the mail user. Therefore, you should make sure to create
and set to be writable by the user that mailpost
runs as the
directories where to put the database and the temporary files.
Instead of /var/tmp
, the mail spool directory can be specified, or any
other directory where the mailpost
process has write access.
- -a addr
- If the -a flag is used, the value given is added to
the article as an Approved: header.
- -b database
- If the -b flag is used, then it defines the location
of the persistent 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 database directory. The
default value is pathdb as set in inn.conf.
- -c wait-time
- 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 distribution
- If the -d flag is used, the value given is added to
the article as a Distribution: header.
- -f addr
- The -f flag is a synonym for the -r
- Print usage information and exit.
- -m mailing-list
- 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
- 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
- -o output-command
- Specifies the program to which the resulting article
processed by mailpost should be sent. For debugging purpose,
"-o cat" can be used. The default value is "inews -S
- -p port
- Specifies the port on which nnrpd is listening, used
for article posting. If given, -p is passed along to
- -r addr
- 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.
- -t tempdir
- If the -t flag is used, then it defines the location
of the directory to use to temporarily store error messages that are sent
to the newsmaster. This option may be required if the default value refers
to a path that does not exist or the mailpost process does not have
write access to. Two paths are tried by default: pathtmp as set in
inn.conf, and then /var/tmp if pathtmp is not
- -x header[:header...]
- A colon-separated list of additional header fields which
should be treated as known header fields; these header fields will be
passed through to inews without having "X-" prepended.
Known header fields are:
- The Perl script itself used to feed an e-mail message to a
- pathdb/mailpost-msgid.dir and
- The default database files which record previously seen
Written by Paul Vixie long ago and then hacked up by James Brister for INN
$Id: mailpost.in 10076 2016-10-08 20:37:36Z iulius $