I understand that email goes to a domain, but how would I set that up? Do I have to contact my ISP in order to have my domain be a FQDN so that my exchange server can be seen from the outside and get emails?
For example, if I sent an email to "firstname.lastname@example.org" how does it get there? My assumption is that in order to have this happen I must have a domain controller, a FQDN setup with my ISP and the ISP routes traffic to my domain.
Is this correct?