[EMAIL PROTECTED] wrote:
>
> > > On Wed, Sep 27, 2000 at 04:28:13PM -0300, Daniel Augusto Fernandes wrote:
> > >
> > > > Even with shell access, one would have to connect to a port 25 on the
> > > > other side to send its msgs. This would not be possible with the
> > > > firewall. These users would have to use the first server as a relay if
> > > > they want to send msgs to the net.
> > >
> > > Whaa? Most Unix UAs do not connect to an SMTP server directly, but submit
> > > via qmail-inject (or more likely a sendmail wrapper).
> > >
> > > What if user 'a' can send externally and user 'b' cannot and they both
> > > use, eg, mailx?
> > >
> > > The answer is that they'd have to be permissioned and pathed to use
> > > seperate instances of qmail.
> > >
> > > Regards.
> >
> > If they do that they will be on the same machine, and they should be
> > able to do that. But if they want to send an internet mail they will
> > have to connect to port 25 of the extern host if they want to use smtp.
> >
> > qmail-inject and any sendmail wrapper actually connect to port 25 when
> > sending extern mail.
>
> Whaa? This is completely wrong. Neither qmail-inject nor the sendmail wrapper
> connects to port 25 at all!
>
> They both utimately give the mail to qmail-queue which gives it to qmail-send
> which gives it to qmail-rspawn which gives it to qmail-remote who hasn't the
> foggiest idea who the real submittor is and has no authentication information
> to give to the SMTP connection on port 25 that it establishes totally independently
> of your submission.
>
> At what part of the qmail-inject process do you think you give the
> authentication information? There is none.
>
> Have you actually tried what you propose?
>
Well, You're right! He will have some problem if he want some shell
users to have extern mail access and some not!
Still, I don't know how could qmail-inject(qmail-remote) and sendmail
send msgs to other hosts without connecting to port 25...
Well done,
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Daniel Augusto Fernandes (DAF tm) [EMAIL PROTECTED]
GCSNet http://www.gcsnet.com.br/
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Se voc� n�o encontra
o sentido das coisas
� porque este n�o
se encontra, se cria.
Antoine Saint-Exup�ry
