Scoble says this like it's a good thing:
Keith Hurwitz and I tried a little test tonight. He sent me an email protected with our digital rights management (restricted rights built into Outlook). I wanted to see if Kunal's OutlookMT tool would post it. It didn't. Test succeeded!
Does it break copy/paste? Because if it doesn't, it's achieved nothing. If it does, then it'll end up being a true annoyance. There's another question as well - what if you send a DRM marked mail to someone like me who doesn't use Outlook? Does this mean that I simply won't get the mail, or does it mean that the DRM will leak off? You could argue that it's broken either way.
IMHO, this is exactly the wrong way to fight this battle. Tell people that stuff is confidential, and then apply consequences if they violate that trust. This smacks me the same way that "zero tolerance" policies in the schools do - it assumes that everyone is too stupid to use judgement, and instead imposes lame policies on the entire class. Color me entirely unimpressed...