multi-parts mail body processing problem

Zhiliang Hu <[email protected]> Mon, 1 Aug 2016 09:50:14 -0500 (CDT)
Newsgroups gmane.mail.smartlist.user
Message-ID <[email protected]>
Sometimes a mail going through my Smartlist is seen all mail body =

multi-parts in full text, like in:

___________start quote________________________________

--Apple-Mail=3D_550744D4-79AF-4AF1-944D-3EAEDC8521DF
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
 	charset=3Dus-ascii

Hi everyone,
....................................
.......................................
............................

--Apple-Mail=3D_550744D4-79AF-4AF1-944D-3EAEDC8521DF
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
 	charset=3Dus-ascii

<html><head><meta http-equiv=3D3D"Content-Type" content=3D3D"text/html =3D
charset=3D3Dus-ascii"></head><body style=3D3D"word-wrap: break-word; =3D
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =3D
class=3D3D"">Hi everyone,<div class=3D3D""><br class=3D3D""></div><div =3D
........................
..............................
.......................................
_________________________________end quote__________________

and sometimes an attachment is sent as BASE64 coded ascii text, which =

often not being able to be decoded by most recepient mail clients. I =

wonder does anyone see the similar, and what I should look into to
correct this?

Thanks in advance,

Zhiliangh