Hi Eric,
Thanks for your reply and the explanation.
We use spamdyke already and would be happy if that solution comes about.
I wonder why spammers aren't exploiting this to generate bounceback
spam, maybe they just haven't caught on yet...?
Quoting Eric Shubert :
I've been seeing several
I've been seeing several of these lately as well. The problem is that
there's a Delivered To: header coming in (before it's actually delivered
anywhere), so qmail-send thinks it's already delivered and is in a loop,
creates a bounce message, which double-bounces back. At that point, I
simply ha