[Mailman-Users] bounces SMTP error 554

Sat Apr 22 22:30:56 EDT 2017

I have a couple members of our list whose remote mail servers reject some
of our messages because of what appears to be text formatting in the
messages. Usually MS Office formatting. I get a bounce back ala:

"host mtaonline.net.mx1.greymail.rcimx.net [208.80.206.74]
    SMTP error from remote mail server after end of data:
    554 Failed: Malformed MIME field: X-Ham-Report:
    Spam detection software, running on the system "
gandalf.nomekennelclub.com", has NOT identified this incoming email as
spam.  The original message has been attached to this so you can view it or
label similar future email.  If you have any questions, see root\@localhost
for details.  Content preview:
     blockquote, div.yahoo_quoted { margin-left: 0 !important;
border-left:1px #715FFA solid !important; padding-left:1ex !important;
background-color:white    !important; } 3 topping 19 inch pizza$20.00 2
chicken fajitas and a sala [0xC2] ..."

In googling, it seems I found others have problems with the [OxC2] type
formatting as well. Just curious if there's much I can do about it or just
ignore these bounces.

Here's the original source of that particular message:

Sent from My iPhone
7=C2=A0 ------=_Part_2280092_117074804.1492908307810 Content-Type:
text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit <html xmlns="
http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml"
xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso
9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body>
<style type="text/css" scoped> blockquote, div.yahoo_quoted { margin-left:
0 !important; border-left:1px #715FFA solid !important; padding-left:1ex
!important; background-color:white !important; } </style>3 topping 19 inch
pizza<div>$20.00</div><div><br></div><div>2 chicken fajitas and a
salad </div><div>$12.00</div><div><br></div><div>Bacon cheese
burger </div><div>$10.00</div><div><br></div><div>Nome
Nachos </div><div>$12.00</div><div><br></div><div>443-7992<br><br><br>Sent
from My iPhone 7 </div> </body></html>
------=_Part_2280092_117074804.1492908307810--
--===============6170515499548786613== Content-Type: text/plain;
charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit
Content-Disposition: inline