E-Mails werden nicht richtig dargestellt (Exchange 2013)

Hallo Admins,

vereinzelnd bekomme ich die Rückmeldung von Kollegen, dass sie sporadisch Mails von Kunden zurückgeschickt bekommen, die inhaltlich nicht richtig dargestellt werden

Beispiel:

Ursprüngliche Nachricht-----
Von: Max Mustermann
Gesendet: Donnerstag, 22. März 2017 18:31
An: heinz.mustermann@firma.de
Cc: Günther Mustermann<günther@firmamuster.de>; Wolf@muster.de
Betreff: WG: Fwd: Das ist eine Testmail


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_com.samsung.android.email_1033426344893120--

Jemand eine Idee?