[newadmin]

Hi everyone Im new around here. I just landed a job as a linux sysadmin at a small business in my hometown. I know this sounds weird, I've used linux for the last five years but I've never tried anything at this scope. So I was hoping maybe someone here could help me. I am setting up a server at the business previously mentioned, particularly an e-mail server, using webmin.

Heres the problem, the server with the domain name is offsite. So we have to log into the server to use it. How do I apply the domain name as opposed to the hostname to the e-mails?

i.e. frank@arcomputers.org opposed to frank@armailserv

How can I have users log into a website instead of into an ip and port?

And Im new with webmin, so how do I go to setup smtp and pop3?

Thanks in advance Im up for anything, this could mean a raise!