Path: utzoo!utstat!helios.physics.utoronto.ca!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!sun-barr!ccut!komaba!ybbs!kenji
From: kenji@ybbs.c.u-tokyo.ac.jp (Kenji Rikitake)
Newsgroups: news.software.b
Subject: Sequence of header fields
Message-ID: <1452@ybbs.c.u-tokyo.ac.jp>
Date: 20 Dec 89 17:25:09 GMT
Organization: PRUG Sakurajousui R&D Center, Tokyo, Japan
Lines: 23
Posting-Front-End: Terakoya-u KAKU u1.12.10  Dec. 20, 1989

I've been co-writing a USENET-news-compatible MS-DOS news processing
program with a staff member of my packet radio group
(Packet Radio User's Group), called "Terakoya" system.

Our news poster seems to be fairly compatible with Bnews 2.11.19,
except for control messages. The postmaster of my domain-master site
told me that control messages made by our programs did not work on
Bnews 2.11.19. He and I worked together to solve the problem. And found:

Bnews 2.11.19 requires following conditions to acceptable control messages:
1. Subject: field should appear before Control: field.
2. Approved: field should appear as the end of header fields
  (i.e. after Lines: field).

Our news poster did totally opposite things to the above criteria.

Questions: do any implicit requirements exist on each header field?
           If yes, why? And how?

-- Kenji
-- 
Kenji Rikitake, Sakurajousui R&D Center, Packet Radio User's Group (PRUG)
 72407.524@compuserve.com/kenji%dctwcs.das.net@sun.com/kenji@Nikkei_MIX
kenji@ybbs.c.u-tokyo.ac.jp/AMPR:kenji@jj1bdx.ampr{.org|.jp}[44.129.16.82]