Re: [exim] Blocking non-authenticated senders

On Tue, 2007-02-20 at 15:38 +0100, Peter Velan wrote:
> I don't see a situation where a foreign server sends me a legit email
> with envelope-from = "localpart@???"?

If there is any external email address for which email is just
automatically forwarded to your systems, and if any of your users send
mail to that address, then it'll happen.

> > - your mail server in turn rejects the forwarded mail because it was
> > not sent via SMTP AUTH
> > - your user will receive an error mail from the forwarding mail server
> >
> > I would stongly recommend not to implement this kind of blocking.
>
> If the scenario you described above is real, then for sure, it would be
> a stupid thing to implement this!

It's very real; it's very stupid :)

--
dwmw2