how do i stop successful delivery notifications

[Steve Evans <Steve.Evans@ir.com>]

hiya's
 
occationally whenever a message is delivered to an account with a .forward
that contains a program. 
ie : "|/usr/local/bin/procmail"
 
both postmaster and the sender of the message are sent a delivery
notification message, such as :
 
"This is a collection of reports about email delivery

process concerning a message you originated:

<local pipe. <mailto:pipe.blah@progsoc.uts.edu.au> blah@progsoc.uts.edu.au
|/usr/local/bin/procmail 10053>: [Exit Status 0] "

 

Is there a way to stop these?

 

thanks

steve..