Some mail proxy's allow for finer control or even need custom X-headers to help with securing mail fully
Ideally where control can be presented to the user, such as "I want this message to receive special handling such as encryption"

Sophos UTM has such a need for it in the form of
'X-Sophos-SPX-Encrypt' with a value of '1'
as per

This would go a long way for enabling end to end encryption without having to build such directly into GroupWise.


  • This could be related:

  • E-Mail encryption is a hot topic since European General Data Protection Regulation is active, except for Microfocus?

  • Sophos has a Add-in for outlook - button enable encryption in send mail. Where is the add-in for GroupWise...