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1.2. Basic Configuration
To configure postfix, run the following command:
sudo dpkg-reconfigure postfix
The user interface will be displayed. On each screen, select the following values:
• Internet Site
• mail.example.com
• steve
• mail.example.com, localhost.localdomain, localhost
• No
• 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.0.0/24
• 0
• +
• all
Replace mail.example.com with the domain for which you'll accept email, 192.168.0.0/24 with the actual network and class range of your mail server, and steve with the appropriate username.
Now is a good time to decide which mailbox format you want to use. By default Postfix will use mbox for the mailbox format. Rather than editing the configuration file directly, you can use the postconf command to configure all postfix parameters. The configuration parameters will be stored in /etc/postfix/main.cf file. Later if you wish to re-configure a particular parameter, you can either run the command or change it manually in the file.
To configure the mailbox format for Maildir:
sudo postconf -e 'home_mailbox = Maildir/'
This will place new mail in /home/username/Maildir so you will need to configure your Mail Delivery Agent (MDA) to use the same path.