Actually, I take back my previous post about not being able to access SMTP. I've never done much with those types of servers. You should see an e-mail from
info@ustoresolutions.co.uk to
mail@ustoresolutions.co.uk in a few moments, which I sent as a test. I think if I had passed a cc: it might have been able to spam outside of the network, but I am not extremely familiar with SMTP. It would not, however, let me directly send an e-mail to an external domain.