Emails with PDF Attachments converted to winmail.dat

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Emails with PDF Attachments converted to winmail.dat

We currently have a PA220 running 9.1.5 and a strange situation occurred on Monday where emails with PDF attachments sent via outlook 2016 from a local client to office365 Online Exchange and the recipients were receiving the email as winmail.dat. Has anyone see this behaviour and Is there anyway to check if Wildfire was converting the attachments. We had the remote domains set too none to send as RTF and disable TNEF in Office365.


Cyber Elite
Cyber Elite


WildFire wouldn't have come into play on this, and certainly wouldn't be what was causing the winmail.dat attachments. 

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