Hi @Markus Veismann ,
To scope the question, what if you don't use Dynamics AX?
If not using "Dynamics AX" will also be converted to random symbols by exchange, can you provide a sample of the random symbols?
Are you checking emails through the Outlook client? How about in OWA?
If the recipient uses Outlook to view the email, you could change the encoding as shown below.
Regards
Shaofan
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