Trying to set up postfix on Ubuntu 14.04

I am trying to set up postfix for an smtp server for my company.

I am using this tutorial: https://www.digitalocean.com/community/tutorials/how-to-install-and-setup-postfix-on-ubuntu-14-04

Everything seems to work until I get to testing it by sending an email. I have set up my A and MX recordfor the mail server (hopefully).

I am trying to use virtual_alias_maps in my /etc/postfix/main.cf file, because everyone in the company needs a separate email address.

When I try to send an email my personal account to what will be my company email, and look it /var/mail/my_name it does not show anything. Neither will it when I use mail from mailutils

I am sorry I don’t have much information to give you all, I am trying to start over and work through it again to see if I can get it right this time.

When I first enter postfix and set up the internet site for sending, the fqnd should be mail.devplateau.com or just devplateau.com?

Thank you for reading, and any help will be appreciated. Just ask for more information and I will be happy to give it you.