spam bounces have my email address

[http://dummy.us.eu.org/robert (Robert )]

Sonic.NET,

It looks like my email address is encoded in the bounces sent back to
spammers, even if it is redirected from an alias.  See below for an
example.

Is there any way to either?:

 1) Suppress my email address in the body of the message?
 2) Not generate any bounce when there are an excessive number of
    complaints?

Thanks.

-------------------------------------------------------------------------------

 This message was created automatically by mail delivery software.
 
 A message that you sent could not be delivered to one or more of its
 recipients. This is a permanent error. The following address(es) failed:
 
   http://dummy.us.eu.org/robert
     (generated from *********************************)
     SMTP error from remote mail server after end of data:
     host mailin-01.mx.sonic.net [69.12.208.73]: 554 5.7.1 The message you
 have sent generated an excessive number of complaints from our users.