Re: [Exim] Relaying at ISP SMTP - ANSWERED

On Sun, Nov 18, 2001 at 06:48:23PM -0500, Peter Radcliffe wrote:

> Paul M Foster <paulf@???> probably said:
> > On Sun, Nov 18, 2001 at 08:27:18PM +0000, Philip Hazel wrote:
> > > If you want more convincing, please go and read RFC 2821. I can assure
> > > there is NO WAY Exim can "ask for a relay". There just isn't such a
> > > facility in the protocol.
> > I glanced over this RFC. It makes little mention of the "handshaking"
> > that occurs prior to the first 220 reply from the smtp server. It is
>
> You're not reading very closely, then.
>

From RFC2821, p. 5:

"Once the transmission channel is established and initial handshaking
completed, the SMTP client normally initiates a mail transaction."

From RFC2821, p. 14:

"An SMTP session is initiated when a client opens a connection to a
server and the server responds with an opening message."

The RFC in question proceeds roughly from the point in time where an
SMTP connection has been established and the server responds with a 220
message. The initial "handshaking" is not covered. If you believe
otherwise, please cite the specific passage, as I have done.

Paul