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Re: Rough consensus reached. Let's move on.

2004-04-19 07:47:11

On Mon, Apr 19, 2004 at 11:20:01AM +0100, Tony Finch wrote:
Although you MUST NOT reject EHLO/HELO, that doesn't mean you can't reject

This is not true.

    RFC 2821        Simple Mail Transfer Protocol            April 2001

    4.3.2 Command-Reply Sequences
    [ ... ]
    In addition to the codes listed below, any SMTP command can return
    any of the following codes if the corresponding unusual circumstances
    are encountered:
    [ ... ]
    421  Service shutting down and closing transmission channel
    [ ... ]
    Specific sequences are:
    CONNECTION ESTABLISHMENT
    [ ... ]
    EHLO or HELO
        S: 250
        E: 504, 550

and later:

    7.7 Scope of Operation of SMTP Servers
    [ ... ] When mail
    is rejected for these or other policy reasons, a 550 code SHOULD be
    used in response to EHLO, MAIL, or RCPT as appropriate.


        \Maex

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