[Mailman-Users] changing rejected post messages to not include all of the original text

There is currently no setting for this in Mailman.

One way to do this is to implement spam filtering on the incoming mail
in the MTA before it ever reaches Mailman and reject spam at the SMTP
level.

It can be done in Mailman by modifying the code in Mailman/Bouncer.py.
At the end of the definition of the BounceMessage() method is the
following (watch for wrapped lines)

# Currently we always craft bounces as MIME messages.
bmsg = Message.UserNotification(msg.get_sender(),
self.GetOwnerEmail(),
subject,
lang=self.preferred_language)
# BAW: Be sure you set the type before trying to attach, or
you'll get
# a MultipartConversionError.
bmsg.set_type('multipart/mixed')
txt = MIMEText(notice,

_charset=Utils.GetCharSet(self.preferred_language))
bmsg.attach(txt)
bmsg.attach(MIMEMessage(msg))
bmsg.send(self)

If you simply remove the line

bmsg.attach(MIMEMessage(msg))

or change it to

# bmsg.attach(MIMEMessage(msg))

the reject email will still be a MIME multipart/mixed message with one
text/plain subpart containing the reject notice.

If you want a simple text/plain message, make the above look like

bmsg = Message.UserNotification(msg.get_sender(),
self.GetOwnerEmail(),
subject,
lang=self.preferred_language)
bmsg.set_payload(notice,
Utils.GetCharSet(self.preferred_language))
bmsg.send(self)