Outlook doesn't show properly attachement sent from andrion samsung galaxy s2

i have an exchange 2013 organization. when user from Samsung galaxy s2 sent attachment (JPG), users in outlook don't see picture.

users with iPhone don't have problems.

this is what thy get:

MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="--_com.android.email_2875564083171210" ----_com.android.email_2875564083171210 Content-Type: multipart/alternative; boundary="--_com.android.email_2875564086528151" ----_com.android.email_2875564086528151 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64

U3RlZmljZSwgbW9saW0gdGUgdXBpc2kgbWkgemFwaXNuaWsgbyBzbml6ZW5qdSBpcHMgamVyIGph IG5lbW9ndSB1cGlzYXRpIHJpenUsIG1ha251dGEgbWkgamUgaXogc2FsZXNwb2RhLgoKClNlbnQg ZnJvbSBTYW1zdW5nIE1vYmlsZQ==

----_com.android.email_2875564086528151 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: base64

dj48YnI+PC9kaXY+PGRpdj48ZGl2IHN0eWxlPSJmb250LXNpemU6NzUlO2NvbG9yOiM1NzU3NTci PlNlbnQgZnJvbSBTYW1zdW5nIE1vYmlsZTwvZGl2PjwvZGl2PjwvYm9keT48L2h0bWw+ ----_com.android.email_2875564086528151--

----_com.android.email_2875564083171210 Content-Type: image/jpeg;  name="20131205_113820.jpg"

Content-Transfer-Encoding: base64 Content-Dis  filename="20131205_113820.jpg";  size=3132506

 Content-Dis  filename="20131205_113820.jpg";  size=3132506