[news.software.nntp] Nntp-Posting-Host line

swindon.ingr.com (Nik Simpson x4333) (06/06/91)

	On anumber of articles I see posted there is a "Nntp-Posting-Host:"
header,  however I haven't seen any posting program that generates this
field.  Before I go and change the posting mechanisms that I provide could
somebody tell me 

	1) Is this header part of any standard which specifies the
	   format and contents.
	2) What if any posting mechanisms will generate this
	   automatically.

	My intentions was simply to add the field something like the following

	Nntp-Posting-Host: <domain address>

	eg

	Nntp-Posting-Host: st_nik.swindon.ingr.com
-- 
|--------------------------------------------------|
|  Nik Simpson	Mail : nik@swindon.ingr.com        |
|  Systems Consultant (UNIX).   Intergraph UK Ltd. |
|--------------------------------------------------|

brian@ucsd.Edu (Brian Kantor) (06/07/91)

The NNTP-Posting-Host: header line comes from sites running later
versions of nntp, and it there to help discourage spoofing of news
articles.  The nntp server which accepted the article with a POST
command is responsible for adding that header line (and eliding any
such which may be received in the article to be posted), so that
if an article needs to be tracked down, where it entered the news
system can be identified.

It is clearly not incorruptible, but it can help.

If you are not using nntp to post (not transfer, POST) articles, you
don't need it.

No, it's not in any standard.  Too new (about a year ago) for that.

	- Brian

PS: I'd have replied to the original question by mail, but the poster's
news posting software is putting out buggered From addresses and I
can't reply to them.

jgabriel@mtecv2.mty.itesm.mx (Ing. J. Gabriel Ruiz P.) (06/07/91)

nik@st_nik!swindon.ingr.com (Nik Simpson x4333) writes:

>	My intentions was simply to add the field something like the following
>	Nntp-Posting-Host: st_nik.swindon.ingr.com

   The Nntp-Posting-Host header is generated by the nntp server program,
  but you must define the AUTH variable when you compile the program.

-- 
Juan Gabriel Ruiz Pinto                   Internet:
Ing. Sistemas Electronicos                jgabriel@mtecv2.mty.itesm.mx
I.T.E.S.M. Campus Monterrey

sob@tmc.edu (Stan Barber) (06/08/91)

Nntp-posting-host: was added as part of the auth extensions to nntp 1.5.
It is added by nntpd when an article is posted via nntp.

-- 
Stan           internet: sob@bcm.tmc.edu         Director, Networking 
Olan           uucp: rutgers!bcm!sob             and Systems Support
Barber         Opinions expressed are only mine. Baylor College of Medicine