I have a domain name, my email adres for admin is the info adres of that domainnaam.
So if my domain is
www.myforums.org then i have my admin email
info@myforums.org.
The nice thing about that, is that the mailserver for that domain is running at my own home, but that does not make any difference with hosting.
As far as I know you should be able to get a bounced message at gmail too. I will try lateron with my own gmail account.
Is that what you mean by an example? If not, please specify.