On Thu, May 02, 2013 at 10:31:43AM +1200, Ben WIlliams wrote: > Please can someone help me understand how to configure what is attached to > bounce messages. > > The version is postfix 2.3.3. Originally it only attached the message > headers of the failed email with Content-Description: Undelivered Message > Headers > > Now it attaches the entire failed email with Content-Description: > Undelivered Message > > I would like to revert to the previous behaviour where only the headers are > attached to the bounce.
This depends on the message size and the bounce size limit. http://www.postfix.org/postconf.5.html#bounce_size_limit If you set bounce_size_limit = 1 bounces will only include headers (no rfc822 message fits in a single byte). Postfix does not permit setting the limit to zero or less. -- Viktor.