I have a client with a 2003 SBS server, 35 Vista client all running Office 2007. They are a law firm and have asked me to to secure their internal mail. I already have a Borderware BSP doing external encryption, yet they want to secure the mail that the partners send between one another. The issue is, some of the partners have given their assistants proxy access to their mail. They want to be able to selectively exclude their assistants from reading some of the mail. They want to be able to mark a message private, so the the assistant can't read the mail. I'm not sure if this can be done. Does anyone have an experience with this issue.