To start Postfix service at boot on a Linux system using the systemctl command, you can use the following steps. First, open a terminal window or connect to your server by SSH.
Check the status of the Postfix service (optional but useful to ensure it's installed):
sudo systemctl status postfix
Enable the Postfix service to start at boot:
sudo systemctl enable postfix
Start the Postfix service immediately:
sudo systemctl start postfix
Verify that the Postfix service is running and enabled:
sudo systemctl status postfix sudo systemctl is-enabled postfix
The systemctl enable command ensures that Postfix will start automatically at boot, while the systemctl start command initiates the service immediately. The systemctl status command helps confirm that the service is running, and systemctl is-enabled verifies that it will start on boot.