[exim] how to disable mailer-daemon or edit notice templates…

Hello.
I've got a problem:
On my server on NONexisting email-address like hello@??? comes spam with substitued email that is a target for getting this spam-message.

It works like this:
1 server get a spam from xxxx=target of a spam
2 mailer-daemon reply to sender(target of a spam)
In this situation our server is like spam-server and we get abuses on data-center.

For example:
real sender is spammer@??? but he substitute it to a target of
spam like michael@??? with sending email to my server on email
hello@???. and mailer daemon reply to michael@???
(not spammer@??? ) thathello@??? non exists and
SHOW THE SPAM MESSAGE above!

How to disable this feature of mailer-daemon or at least make him not to show spam-message but say only about error?
Thank you much!