Hi Doug,
This is not quite true. It's a very dodgy issue that I've been discussing a lot recently. You and people that you email a lot may recieve emails apparently from you or an address that 'could' be yours.
The lastest bugs, worms & viruses infect your email program and send spam emails from addresses that are, or could be, yours.
I for example, have the address
jonathan@livescripts.net. And when I send mail my name comes up as Jonathan S. So people who I email a lot get spam email from addresses like:
jonathan@livescripts.net
jonathan.s@livescripts.net
jon-s@livescripts.neteven though some of these addresses do not exist.
Basically what I am saying is that not many people will get email from
doug@simviation.com, but mostly from their
own email account.
I hope that helps you a bit & I apologise that it's so long winded

Jon
