If you just want to stop these particular messages, try googling around
for qmail and "double bounce", which is the sendmail nomenclature for the
bounce-of-a-bounce message.

grep -B 1 -i doublebounce /etc/mail/sendmail.cf:
# where do errors that occur when sending errors get sent?
#O DoubleBounceAddress=postmaster


On Wed, 1 Sep 2004 rotbau at squishnet.com wrote:

> Hello all,
> 
> I have recently set up qmail and I have a question regarding the mailer-daemon
> mail.  I am new to qmail (used to run sendmail) so this may be a easy/dumb
> question.
> 
> I get a fair number of bounces when qmail sends out a delivery failure notice
> for non existent user or user that has been deleted.  Of course most of the
> bounces are caused by spam so the failure notice from qmail gets bounced back
> to qmail which then notifies me via the mailer-daemon address of the failure.
> 
> I know that qmail uses the .qmail files to deliver alaises.  Originally the
> .qmail alias for mailer-daemon was a simlink to the .qmail postmaster file
> which contains the user I want to receive system mail  I removed the simlink
> and made the .qmail file for mailer-daemon try to send mail to /dev/null hoping
> this might stop the messages from clogging up my inbox.  No luck.  I still get
> them.
> 
> Anyone have any suggestions how to stop/control/configure messages from
> mailer-daemon or the qmail mta in general?  Thanks.
> 
> regards, rotbau
> 
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