One of our on-premises customers uses Greenview Data's SpamStopsHere as anti-spam/anti-virus for their Exchange 2010 implementation. He wants to move to Office 365 and keep it. Given the fact that the cloud service put a mask in front of the messaging system so that everyone sends e-mail for that business to SpamStopsHere instead of to that business's e-mail server, I do not see any issue on using this. Does anyone has any contradictory experience with this?
Also uses the Greenview Email Encryption service to have secure email encryption. He also wants to keep it. Does anyone has experience setting this from Office 365?