Since this thread is still active, I'll add my 2 cents:
Werner Fleck wrote:
I did not mean forged bounces but real bounces for forged mails.
Spammers discovered my domains some months ago and are increasingly
using them for forged mails. I am using SPF to protect my domains but if
other mail servers don't check it on reception and then additionally
bounce the forged mail, I'm getting the bounce, not the spammer.
I'm surprised that adding an SPF record to your domain is not working
for you. Maybe your SPF record is too weak? I've experienced several
misdirected bounces floods on various domains, and these floods have
dried up completely within a few days or weeks every time after adding
an SPF record that ends with
-all
Apparently, this causes enough rejections to annoy the spammers and get
them to move on to other domains that they can exploit with less hassle.
If this has gone on for an extended period of time, it may take longer
to dry up, but I think your chances are intact, with a strong SPF record.
Hans
