how to disable mailer-daemon or edit notice templates?

Bizitops

Registered
Mar 31, 2010
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Hello.
I've got a problem:
On my server on NONexisting email-address like [email protected] 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.

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!