Exim is a popular mail transfer agent (MTA) used on Unix-like operating systems. It is a flexible and highly customizable MTA that supports various authentication mechanisms and delivers emails efficiently. If you're looking to install Exim on your Elementary OS Latest system, here's a step-by-step guide:
Before installing Exim, it's essential to make sure your system is up-to-date. To do that, open the terminal and run the following commands:
sudo apt-get update
sudo apt-get upgrade
Enter your password when prompted and wait for the process to complete.
To install Exim on your Elementary OS system, open the terminal and run the following command:
sudo apt-get install exim4
This will install the Exim MTA and its dependencies on your system.
After installing Exim, you need to configure it to send and receive emails. To do that, run the following command:
sudo dpkg-reconfigure exim4-config
This will start the Exim configuration wizard. Here are the settings you need to configure:
General type of mail configuration: Select "Internet Site" if you're using Exim to send and receive emails over the internet.
System mail name: Enter the domain name that you're hosting emails for. For example, if your domain is "example.com," enter "example.com" here.
IP-addresses to listen on for incoming SMTP connections: Leave this field blank to listen on all IP addresses.
Other destinations for which mail is accepted: Leave this field blank to accept mail for all domains.
Visible domain name for local users: Enter the same domain name you entered in the "System mail name" field.
IP address or host name of the outgoing smarthost: You can enter the IP address or hostname of your ISP's mail server here if you want to relay emails through their server.
Keep number of DNS-queries minimal (Dial-on-Demand)? Select "No" unless you're using a dial-up connection.
Delivery method for local mail: Select the default options.
Split configuration into small files? Select "No" unless you're an advanced user.
Root and postmaster mail recipient: Enter your email address for both fields.
After entering the above settings, the configuration wizard will ask if you want to make any more changes. Select "No" to save the settings and exit the wizard.
To apply the changes, restart the Exim service by running the following command:
sudo service exim4 restart
Exim is now installed and configured on your Elementary OS Latest system. You can test the MTA by sending a test email to your email address and checking if it's delivered successfully. If you encounter any issues, you can refer to the Exim documentation or seek help from the Exim community.
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