Bug#421980: exim4: ALL outgoing mail returned "Relaying not allowed"

[David Baron]

On Thursday 03 May 2007, Marc Haber wrote:
> On Thu, May 03, 2007 at 06:10:03PM +0300, David Baron wrote:
> > On Thursday 03 May 2007, you wrote:
> > > On Thu, May 03, 2007 at 04:09:00PM +0300, David Baron wrote:
> > > > In outlook express, one would check authentification required and
> > > > enter simply 'v'. (Usually there will be fields for username and
> > > > password)
> > >
> > > What would "v" mean?
> >
> > Good question. How much more security can such an authorization bring?
> > However, that is what they said to do.
>
> They want you to enter "v" as username and password for authentication?
>
> Greetings
> Marc

I tried it. Did not work. Their instructions to their Outlook Express users 
were just that: check requires authorization and enter 'v'. But putting
smtp.....:v:
in password.client did not work.
Problem is that no one at the provider knows linux or exim.

This idea may not be such a bad one, though. That username and password are 
being sent out as plain text which is an open invitation for anyone with a 
packet sniffer to spam using that account. It has happened.

I would assume that when they receive that 'v', they check the originator 
against logged in subscribers and authenticate privately.