Re: [exim] how could i authenticate local users ?

Hey,Todd,Thanks for your reply. you said "
There is no need to require smtp authentication for a local user that is
sending if the recipient is also a local user. "

but now the mail server suffered from spams. because the spammer know some of the senders and recipients ( local users could send mails
each other),
so he could easily send emails from the known local user to the another . although the mail server is not spammed as
open relay ,but the spammer sometimes disrupts it. so how i could authenticate local users without rejecting the outsider? thanks very much.




On 2011-09-13 15:33, Todd Lyons wrote:
> On Tue, Sep 13, 2011 at 1:44 AM, freeman <freeman@???> wrote:
> > HI,ALL
> >
> > the exim mail server is setup ,all goes well.
> >
> > one day ,i found the local virtual users could send emails to local virtual users without authentication.
>
> Because *ANY* user can send email to a local virtual user. There is
> no need to require smtp authentication for a local user that is
> sending if the recipient is also a local user.
>
>
> --
> If Americans could eliminate sugary beverages, potatoes, white bread,
> pasta, white rice and sugary snacks, we would wipe out almost all the
> problems we have with weight and diabetes and other metabolic
> diseases. -- Dr. Walter Willett, Harvard School of Public Health
>
>