How To Install and Configure Postfix on Ubuntu 24.10

To install and configure Postfix on Ubuntu 24.10, follow these simple steps to set up a functional mail transfer agent.

Step 1 : Ensure your system is up-to-date:

sudo apt update

Step 2 : Install Postfix using the following command:

sudo apt install postfix -y

During installation:

- Select "Internet Site".

- Enter your System Mail Name (e.g., example.com).

Step 3 : Run the configuration tool to adjust Postfix settings:

sudo dpkg-reconfigure postfix

Provide the following details:

- General type of mail configuration: Internet Site

- System mail name: Your domain name or server hostname

- Recipient for root and postmaster mail: Your email address

- Other destinations to accept mail for: Keep the default

- Force synchronous updates on mail queue?: No

Local networks: Keep the default value

Mailbox size limit: 0 (unlimited)

Local address extension character: Leave as default

Internet protocols to use: Select "all"

Step 4 : Check if Postfix is running:

sudo systemctl status postfix

Step 5 : Test Postfix

- Install mailutils

sudo apt install mailutils -y

- Visit a temporary email service like https://temp-mail.org.

- Send an email to the temporary address:

echo "This is a test email" | mail -s "Test Postfix" youremail@temp-mail.org

- Check if the email is received on the temporary email website.

Step 6 : Inspect logs to verify mail activity:

sudo tail -f /var/log/mail.log

Congratulations! You have successfully installed and configured Postfix on Ubuntu 24.10.