From: Andrzej Adam Filip (anfixl.wp.pl)
Date: Fri Jul 27 2007 - 05:03:44 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Rod Dorman wrote:
> On Thursday, July 26, 2007, 18:49:33, Andrzej Adam Filip wrote:
>> Magnus Bäck wrote:
>>> ...
>>> b) when the whole message has been received you cannot reject the
>>> message for some users but allow it for others. It's either
>>> accept or reject for all recipients.
>> SMTP have been designed long time ago and "the requirements has changed"
>
> What are these "requirements" that you are referencing?

The environment (E)SMTP has to face has changed a lot during 25 years.

When SMTP was designed ability to face spam/abuse as we see day was not
on the (informal/assumed) requirements lists. *For years* every mail
server had been an open relay.

* RFC822 is dated August 13, 1982
* "relay control hooks" in sendmail-8.8.0 are dated November 26, 1996

> Please give the RFC number and section number that supports your claim.

Common sense and logic had lived for long before any RFC.

P.S.
In my opinion bare minimum required consists of:
a) "asynchronous break" so server can break session an *any* time
    [with variants: 'try later' and 'try no more']
b) ability to selectively reject recipient(s) *after* the final dot

--
[pl>en: Andrew] Andrzej Adam Filip : anfipriv.onet.pl : anfixl.wp.pl
Home site: http://anfi.homeunix.net/

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]