Jasen Betts <jasen@???> (Do 13 Nov 2014 22:38:29 CET): > On 2014-11-13, Heiko Schlittermann <hs@???> wrote:
>
> > Thank you. Reading this it seems to be possible.
> > I'll report the solution to this list. (I think, I got this link
> > already, but I was confused because the Exchange2013 people kept telling
> > me, that it is not possible to reject at RCPT)
>
> it's easy to avoid backscatter, just set errors_to=postmaster@their-domain
> that should motivate them to fix their exchange.
But it doesn't help, if they accept every recipient of their domain and
then generate the bounce by themselve. Creating a bcc-router for empty
sender addresses from their host would help probably :)
