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| Subject: | Re: SMTP question |
| Group: | Postfix-users |
| From: | (Wietse Venema) |
| Date: | 13 Jun 2007 |
> I started with modifying an existing one but found that needed a
> little bit more.
> Eventually I got to the point where there was little resembling the
> original.
>
> besides, what I am finding in the existing ones is that they do not
> comply with the RFC specification. For example MSDW modules, a
> classic, tracks information until DATA is received and then just
> pipes everything into a temporary file until it's no longer being
> read from the network socket.
With SMTP, the DATA ends with "." on a line by itself, and the
receiver removes '.' at the beginning of all other lines.
> Problem with this, as I understand it, is that EHLO allows me to send
> messages in the form of:
EHLO has nothing to do with the handling of '.'.
> HELO
> MAIL FROM
> RCPT TO
> DATA
> ...
> .
That last '.' is the end of the first message.
> MAIL FROM
> RCPT TO
> DATA
> ...
> .
That last '.' is the end of the second message.
> QUIT
>
> That being the case, EHLO would result in ONE MASSIVE email...
This results in multiple deliveries, regardless of whether EHLO
was sent.
Wietse
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