On 5/15/08, Aidas Kasparas <[EMAIL PROTECTED]> wrote:
> Sam Varshavchik wrote:
>> Aidas Kasparas writes:
>>
>>> I do not have arguments why courier should not fallback in 454 cases
>>> [remember "be liberal at what you accept" internet principle?].
>>
>> Because any 4xx SMTP error code means exactly that: "try again later",
>> not "try something else entirely, which is less secure".
[snip]
> Therefore, I would agree that fallback to plain ESMT from 354 is
> "slightly less private" but no "less secure". But, we MUST NOT relay on
> that privacy which STARTTLS offers, therefore I see no problem doing
> fallback (with exception when STARTTLS is explicitly requested).

Wrong. A breach of "privacy" is a breach of "security". Period.
Delivery should be done within the confines of what the session has
negotiated - no more, no less.

jerry

-- 
I wish I had your happiness
And you had a do-wacka-do-wacka-do-wacka-do-wacka-do-wacka-do
-Roger MIller

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