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Is anybody using UTM SPX mail encryption with O365? Instead on-premise Exchange?
Regards
How do you propose to make that work? Outbound mail has to flow through UTM for UTM to do anything to the traffic. I doubt you can control the outbound flow from Microsoft.
It can be done. It is fully supported by Sophos.
http://www.internalit.ca/blog/post/filtering-office-365-email-through-a-sophos-utm-guide
Raz