Re: Re: Small addition to draft-gellens-submit-bis-02.txt

>>
>> If an MSA host accepts messages on port 25 then DNS-MX records SHOULD
>> NOT point to this host.

> This rule isn't necessary. SMTP server software can distinguish between
> MSA mode and MX mode using the fact that the client did or did not
> authenticate itself. The only caveat is that systems that work like this
> have less scope for pre-authentication anti-spam techniques because some
> of these tricks can disrupt MSA clients in unpleasant ways.
>

I thought that one of the ideas behind MSA was that you didn't need SMTP server software that can distinguish between MSA mode and MX mode.

But i also saw a bit of your point, that is why i formulated it as a recommandation (SHOULD) not an requirement (MUST)