with SR-1 installed (according to MS) there is NO way to send emails through outlook without prompting for confirmation from the user. this is to prevent automation in a malicous way.. like those email worm viruses. So if you want the email to be sent in the background (without the user having to do anything) then you need to get rid of SR-1. Supposidly there is no way to turn it off or change anything in the registry. MS said that the update was actually a chance to the outlook object model which is what you reference to automate outlook...

I think it is total BS but what can you do... I guess people have the option to install SR-1 or not... but my company did it and I have no choice but to work around it