Identify the minimum required steps to configure postfix on a client system to relay outbound emails to an SMTP server.
Note: The postfix package is already installed and running on the system.
1. Install the postfix-cf package.
2. Set the myorigin parameter to $mydomain in /etc/postfix/main.cf.
3. Set the relayhost parameter to the desired SMTP server in /etc/postfix/main.cf.
4. Restart mail services by using: service postfix restart.
A. 1, 2, 3, 4
B. 1, 3, 4
C. 3, 4
D. 3 only
E. 2, 3, 4
F. 2, 4