RFC 3977, "Network News Transfer Protocol (NNTP)", October 2006

Errata ID: 1533
Status: Verified
Type: Editorial
Publication Format(s) : TEXT
Reported By: Julien Élie
Date Reported: 2008-10-01
Verifier Name: Lisa Dusseault
Date Verified: 2009-11-23

Section 5.3.3 says:

Example of use of the MODE READER command on a server that provides
reading facilities:

   [C] CAPABILITIES
   [S] 101 Capability list:
   [S] VERSION 2
   [S] READER
   [S] LIST ACTIVE NEWSGROUPS
   [S] .
   [C] MODE READER
   [S] 200 Reader mode, posting permitted
   [C] IHAVE <i.am.an.article.you.have@example.com>
   [S] 500 Permission denied
   [C] GROUP misc.test
   [S] 211 1234 3000234 3002322 misc.test

It should say:

Example of use of the MODE READER command on a server that provides
reading facilities:

   [C] CAPABILITIES
   [S] 101 Capability list:
   [S] VERSION 2
   [S] READER
   [S] LIST ACTIVE NEWSGROUPS
   [S] .
   [C] MODE READER
   [S] 200 Reader mode, posting permitted
   [C] IHAVE <i.am.an.article.you.have@example.com>
   [S] 500 Unknown command
   [C] GROUP misc.test
   [S] 211 1234 3000234 3002322 misc.test

Notes:

The response code 500 is sent because this server does not implement the IHAVE command at all. Therefore, IHAVE is not recognized.
Had the server known the command, it would have replied "502 Permission denied" (according to the result of CAPABILITIES, there is no possibility to authenticate or negotiate a TLS layer which could have provided the availability of the command).

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