Exim is a popular mail transfer agent (MTA) for Unix systems that can be used to send and receive emails over the internet. In this tutorial, we will be installing Exim on POP! OS Latest, which is a Linux distribution based on Ubuntu.
Before we start, we need to make sure that our system is up-to-date and has all the necessary packages installed. To do so, open a terminal and run the following commands:
sudo apt update
sudo apt upgrade
Once our system is up-to-date, we can proceed with the installation of Exim. To install Exim on POP! OS Latest, run the following command in your terminal:
sudo apt install exim4
This command will install Exim and any dependencies that it needs to function properly. During the installation process, you will be asked to configure Exim. You can select the default options by pressing Enter.
After the installation is complete, we need to configure Exim to send and receive emails. To do so, edit the Exim configuration file /etc/exim4/update-exim4.conf.conf using your favorite text editor.
sudo nano /etc/exim4/update-exim4.conf.conf
Inside the file, you will find several options that you can configure. Make sure that the following options are set as follows:
dc_eximconfig_configtype='internet'
dc_other_hostnames=''
dc_local_interfaces='127.0.0.1 ; ::1'
dc_readhost=''
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost=''
CFILEMODE='644'
dc_use_split_config='false'
dc_hide_mailname='true'
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'
Once you have made the changes, save and close the file.
Next, restart Exim to apply the changes:
sudo systemctl restart exim4.service
Exim is now installed and configured on your POP! OS Latest system.
To test Exim, you can use the command-line tool mail that is included with Exim. To send an email to yourself using Exim, run the following command:
echo "This is a test email." | mail -s "Test Email" your-email@example.com
Replace your-email@example.com with your actual email address.
If everything is working correctly, you should receive the email in your inbox within a few minutes.
Congratulations! You have successfully installed Exim on your POP! OS Latest system and have sent a test email. Exim is a powerful and versatile mail transfer agent that can be used to send and receive emails over the internet. With some additional configuration, you can also use Exim as a mail server for your organization.
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