OSEC

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Subject: Re: Postfix to Postfix session: DATA after 450 error
From: Wietse Venema (wietseporcupine.org)
Date: Sun Sep 24 2000 - 12:13:07 CDT

Sergei Laskavy:
> On Sun, Sep 24, 2000 at 12:09:43PM -0400, Wietse Venema wrote:
> > This is not a problem. This transcript was recorded by the server.
> > What you can't see in the transcript is that the client sent the MAIL
> > FROM, RCPT TO and DATA commands all in one network packet (this is
> > ESMTP command pipelining).
>
> Sounds like a (very good) FEATURE then :-)

With small messages, ESMTP command pipelining can send 30% less
TCP network packets, which supposedly helps to speed up delivery.

It does not do much good when the client or server does a lot of
processing in-between MAIL FROM, RCPT TO and DATA.

Fixing the unnecessary email notification is on the TODO list, but
has not a lot of priority.

        Wietse