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Re: rfc2821bis-01 Issue 18: Usability of 1yz replies

2007-04-10 10:43:52

John C Klensin wrote:
I've assigned Issue 18 to the question of whether it is
permitted to use 1yz codes without extensions and whether
additional text is needed to clarify the answer (whatever it is).

It appears that there are four options:

        (i) Do nothing, leaving the text as is
        (ii) Make it clear that 1yz codes are prohibited without
        (iii) Specify conditions under which a
        2821bis-conforming server, without extensions, may
        generate a 1yz code and what clients are expected to do
when such codes are received.
        (iv) Say nothing more about servers generating these
        codes, but offer some guidance to clients if they
        receive them (whether the server is otherwise conformant
        or not).

I vote (iii) but also (iv) is ok.

     Clients SHOULD rely on using the final reply-code in
     a multiline response as the servers intended reply-code
     to the current command.  Other other codes SHOULD be
     ignored as it may not match the final code.

I think that is all it should be added, really.