====== How to create a Postfix relay Server ======
To create a Postfix relay Server ensure you have the appropriate Linux distribution installed on a Virtual Server.
===== Install postfix =====
Type the following command to install postfix:
sudo apt install postfix
You need to select mail server type:
{{https://www.cyberciti.biz/media/new/faq/2016/08/1-1.jpg?nolink&599x434|Fig.01: Postfix config during installation on an Ubuntu or Debian server}}
Select Internet Site:
{{https://www.cyberciti.biz/media/new/faq/2016/08/2-1.jpg?nolink&599x438|Fig: Select internet site as type of mail configuration}}
Type fully qualified name of your domain such as flakie.org
{{https://www.cyberciti.biz/media/new/faq/2016/08/3-1.jpg?nolink&599x434|Fig.03: Type FQDN}}
===== Configure myhostname =====
Edit /etc/postfix/main.cf, enter:
sudo nano /etc/postfix/main.cf
Set myhostname to FQDN as configured earlier
myhostname = bash.cyberciti.biz
Save and close the file.