How To Install and Configure Postfix as a Send-Only SMTP Server on Ubuntu 14.04

How To Install and Configure Postfix as a Send-Only SMTP Server on Ubuntu 14.04

How To Install and Configure Postfix as a Send-Only SMTP Server on Ubuntu 14.04

If you want to send emails from your Ubuntu 14.04 server, you'll need to install a Mail Transfer Agent (MTA). In this tutorial, we'll show you how to install and configure Postfix as a send-only SMTP server on Ubuntu 14.04.

Step 1: Install Postfix

The first step is to install Postfix:

sudo apt-get update
sudo apt-get install postfix

During the installation, you'll be prompted to select the type of mail configuration. Choose "Internet Site" and enter the hostname for your server when prompted.

Step 2: Configure Postfix

Once Postfix is installed, you need to configure it:

sudo nano /etc/postfix/main.cf

Add the following lines to the end of the file:

myhostname = yourhostname.com
mydestination =
relayhost = [smtp.gmail.com]:587
smtp_use_tls = yes
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous

Replace "yourhostname.com" with the hostname for your server. These settings will configure Postfix to use Gmail as an SMTP relay.

Step 3: Configure SMTP Authentication

Next, you need to configure SMTP authentication:

sudo nano /etc/postfix/sasl_passwd

Add the following line to the end of the file:

[smtp.gmail.com]:587 your_email@gmail.com:your_app_password

Replace "your_email@gmail.com" with your Gmail address and "your_app_password" with the app password you generated for your Gmail account.

After saving the changes to the file, run the following command to create the hash database:

sudo postmap /etc/postfix/sasl_passwd

Finally, secure the password file by running:

sudo chmod 600 /etc/postfix/sasl_passwd*

Step 4: Restart Postfix

After making the changes, restart Postfix to apply the new configuration:

sudo service postfix restart

Postfix is now configured as a send-only SMTP server on your Ubuntu 14.04 server. You can test the configuration by sending an email:

echo "This is a test email." | mail -s "Test Email" recipient_email_address

Replace "recipient_email_address" with the email address you want to send

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