From: %(From)s
To: %(To)s
Subject: Bad address list for %(list)s
Content-type: multipart/mixed; boundary="%(boundary)s"
MIME-Version: 1.0

This is a multipart message in MIME format

--%(boundary)s
Content-type: text/plain; charset=us-ascii

Hello, 

This mail has been sent by the mailing list manager operating the
%(list)s mailing list.

The address list you sent was syntactically incorrect. You need to have
exactly one address per line, and nothing else.

For instructions on using the mailing list manager software, send
mail to %(local)s-help@%(domain)s .

If you have problems, please contact the human owners of the list
at %(local)s-owner@%(domain)s .

Thank you.

--%(boundary)s
Content-type: message/rfc822
Content-disposition: inline; filename=original.txt

%(origmail)s--%(boundary)s--