Thanks for all your help Paul, I think I understand it a little more now.
One other small thing but I doubt there's an easy solution to this, I actually have 2 mailboxes in my outlook - my personal work one and a service wide 'no-reply' account. It would be ideal if I could send from my the no-reply account - any idea if there is a simple way to implement this?

Many thanks again, you're a star!
Good luck with the assignments!

Mikey