Ron Garret:
[ Charset windows-1252 converted... ]
>
> On Jul 11, 2021, at 9:58 AM, Wietse Venema <[email protected]> wrote:
>
> > Ron Garret:
> >> I have recently come under a backscatter spam attack from one
> >> specific domain. This domain has blacklisted my server?s IP
> >> address, and so bounce replies sent to this domain are piling up
> >> in my mail queue and I have to go through periodically and manually
> >> delete them. I don?t want to disable bounce messages in general
> >> because I don?t want incoming messages with typos in the destination
> >> address to just vanish into the cosmic void. Is there a way to
> >> disable bounce replies for a specific domain?
> >
> > Why is your server sending bounces (or any other email) to that
> > domain?
>
> Because spammers are sending messages with forged return-path headers to
> invalid addresses on my server. It?s called backscatter:
You must reject mail for invalid recipient addresses. Otherwise,
you deserve by 100% the problem that you experience.
Wietse
