🚀 go-pugleaf

Terrance Richard Boyes <tez@pierrot.co.uk> wrote:
> 
> Paul Black <URL:mailto:paul@darwin.demon.co.uk> wrote:
> > Terrance Richard Boyes <tez@pierrot.co.uk> wrote:
> > > >  Received: from moss.limitless.co.uk ([194.205.45.5]) by punt-2.mail.demon.net
> > > >           id aa0522976; 10 Apr 98 14:37 GMT
> > > >
> > > > for a recent email of mine.
> > >
> > > What I was hoping for was a lookup on 194.205.45.5.
> >
> > And that is what it does.
> 
> No it doesn't.

Yes it does, see below.


> moss would be given at the HELO
> 194.205.45.5 is the IP address of the connecting machine
> We do not have a DNS lookup on 194.205.45.5
> 
> > > AIUI moss.limitless.co.uk is the name given, 194.205.45.5 is the
> > > actual IP address, these _may_ not match up.
> >
> > They will, given the above.
> 
> In that one particular case that _may_ be the case.
> 
> However I suggest you investigate giving an incorrect response to
> the HELO prompt sometime.

I did before I posted my reply and am including the results gain to
assist your understanding. You will, of course, notice that
bollocks.bollocks has been magically transformed into
darwin.demon.co.uk.

HTH

Paul

P.S. Your news reader is broken. It's truncating the references line.


paul@darwin> telnet punt-2.mail.demon.net smtp
Trying 194.217.242.5...
Connected to punt-2.mail.demon.net.
Escape character is '^]'.
220 relay-5.mail.demon.net Server SMTP (Complaints/bugs to:  postmaster@demon.net)
helo bollocks.bollocks
250 Good evening, pleased to meet you
mail from: <bollocks>
250 OK
rcpt to: <paul@darwin.demon.co.uk>
250 Recipient OK.
data
354 Enter Mail, end by a line with only '.'
To: someone
From: Someone else

fherwfr
fw
rewfrw
.
250 Submitted & queued (25/msg.aa0528083)
quit
221 relay-5.mail.demon.net says goodbye to darwin.demon.co.uk at Sat Apr 11 20:00:28.
Connection closed by foreign host.
paul@darwin> 


The mail received:


From bollocks@darwin.demon.co.uk  Sat Apr 11 21:03:31 1998
Return-Path: <bollocks@darwin.demon.co.uk>
Received: from relay-5.mail.demon.net (punt-2a.mail.demon.net [194.217.242.5])
        by darwin.demon.co.uk (8.8.8/8.8.8) with SMTP id VAA01571
        for <paul@darwin.demon.co.uk>; Sat, 11 Apr 1998 21:03:30 +0100
Date: Sat, 11 Apr 1998 21:03:30 +0100
Received: from punt-2.mail.demon.net by mailstore for paul@darwin.demon.co.uk
          id 892324827:05:28550:0; Sat, 11 Apr 98 20:00:27 GMT
Received: from darwin.demon.co.uk ([158.152.86.28]) by punt-2.mail.demon.net
           id aa0528083; 11 Apr 98 20:00 GMT
To: someone@darwin.demon.co.uk
From: Someone.else@darwin.demon.co.uk
Message-ID: <892324825.0528083.0@darwin.demon.co.uk>

fherwfr
fw
rewfrw