Jim Lang:
> >>>> But if mycli...@otherserver.com can for whatever reason not be
> >>>> delivered, otherserver.com does what it is supposed to do and
> >>>> rejects the mail during the smtp connection, which causes postfix
> >>>> to send out a non-delivery report to vic...@randomdomain.com --
> >>>> backscatter.
> >>>>
> >>>> Is there a way to stop this?
> >>>>
> >>>>
> >>> Yes. Don't forward SPAM.
> >>>
> >>> Wietse
> >>>
> >>>
> >> And how do I do that in this scenario?
> >>
> >
> > You use recipient verification.
> >
> >
> I must have been really inarticulate when I wrote out the scenario. I
> do use recipient verification on my server. How is it that that is not
> clear? Do I need to rewrite this post?
Recipient verification does not expand a local alias (imagine what
would have to be done to verify with addresses in .forward files,
or in a mail distribution list).
So the best option is to avoid forwarding SPAM, including Victor's
suggestion to not forward mail indefinitely for legacy user accounts.
Other options get ugly quickly (such as replacing the return address).
Wietse
