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Conflicting Enhanced Status Codes between RFC 4468 and draft-siemborski-rfc2554bis

2007-03-12 04:34:01

Chris Newman just pointed out that there is a conflict between an Enhanced Status Code defined in RFC 4468 and draft-siemborski-rfc2554bis.

RFC 4468 defines:

  X.7.8 Trust relationship required

     The submission server requires a configured trust relationship
     with a third-party server in order to access the message content.

draft-siemborski-rfc2554bis-08.txt defines:

   535 5.7.8 Authentication credentials invalid

   This response to the AUTH command indicates that the authentication
   failed due to invalid or insufficient authentication credentials.
   In this case, the client SHOULD ask the user to supply new
   credentials (such as by presenting a password dialog box).

Use of 5.7.8 in draft-siemborski-rfc2554bis-08.txt is a new feature since RFC 2554. However, draft-siemborski-rfc2554bis was around for long time and there might be more implementations of its 5.7.8 than that from the RFC 4468. There are certainly fewer RFC 4468 implementations deployed at the moment.

So, in order to decide whether draft-siemborski-rfc2554bis needs to be changed or whether rfc4468bis needs to be published, I would like to solicit comments from implementors of both extensions.