I don't think so! (If that's the case, then your system won't
be able to receive mail from anywhere on the network!) That's
the way SMTP works - its a mail receiving protocol - and its
defined to work (RFC 911 I think) such that the sender doesn't
have to log in!
However, with the /etc/mail/access file, you can restrict the
hosts that connect to it - and using the AUTH protocol (aka
identd) you can sorta authenticate the sender (however, there
are some well-known ways to spoof this, so its not considered
"secure").
"Joshua S. Freeman" wrote:
>
> On Tue, 8 Feb 2000, Benjamin Scott wrote:
>
> >
> > > I do have a question though: how do I lock down smtp services on the
> > > linux box if I move smtp services there (for users using clients from
> > > other networks...)
> >
> > Not sure what you mean by "lock down". Please clarify. :)
>
> The only people I want using my smtp server are people logged into their
> shell account, or people who HAVE shell accounts using a mail client from
> a remote network...
>
> J.
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