Someone posted a patch quite some time ago to the lists, try searching the
archives.
Colin Humphreys writes:
> Is there a package for doing imap before smtp with courier-imap and
> qmail?
>
> Jeremy McLeod wrote:
> >
> > Auf Oct 22, 2000, an 08:20, Mark Thomas (Tech14) besagt dieses:
> >
> > >Hello everyone,
> > >
> > >Is there a way to setup qmail to use SMTP authorization?
> > >Right now I am limiting sending of mail to authorized users on the
> > >local segment(10.1.0.x). How would I go about forcing the user to
> > >sign in with a username/password in order to send smtp mail, rather
> > >than disallowing totally access from outside?
> > >
> > >Also, does this open any doors that I should be concerned with?
> >
> > Install relay-ctrl(http://em.ca/~bruceg/relay-ctrl/) if you're using
> > qmail's pop3d. This opens relay for users who have successfully logged
> > in via pop3. Instructions are included with the package.
> >
> > -jeremy
> > --
> > The reason they're called wisdom teeth is that the experience makes you wise.
