How To Install and Configure Postfix on CentOS Stream 10

To install and configure Postfix on CentOS Stream 10, follow these simple steps.

Step 1 : Before installing any software, update the system's package index to ensure you have access to the latest versions.

sudo dnf update -y

Step 2 : Install Postfix using the dnf package manager.

sudo dnf install postfix -y

Step 3 : Start Postfix and enable it to automatically start on boot.

sudo systemctl start postfix
sudo systemctl enable postfix

Step 4 : Check the status of Postfix to ensure it is running properly.

sudo systemctl status postfix

Step 5 : Test Postfix

- Install the s-nail utility to send test emails.

sudo dnf install s-nail -y

- Visit a temporary email service such as temp-mail.org to get a temporary email address.

- Use the s-nail command to send an email to your temporary email address.

echo "This is a test email from Postfix." | mail -s "Postfix Test Email" your_temp_email@example.com

Replace your_temp_email@example.com with the email address you obtained from the temporary email service.

- Go back to the temporary email service and verify that the test email has been received.

Step 6 : To debug or verify email delivery, review the Postfix logs.

sudo tail -f /var/log/maillog

This will show the latest mail log entries in real time, allowing you to confirm email delivery.

Congratulations! You have successfully installed and configured Postfix on CentOS Stream 10.