![Tutorial Install Postfix on Ubuntu 20.04 [Step by Step]](https://neuronvm.com/wp-content/uploads/2021/10/Tutorial-Install-Postfix-on-Ubuntu20.04-Step-by-Step.webp)
Postfix is a popular open-source Mail Transfer Agent (MTA) that can be used to route and send an email on a Linux system. It is estimated that about 25% of public mail servers on the Internet run Postfix. In this article, we are going to teach you How to Install Postfix on Ubuntu 20.04 [linux vps] step by step.
How to Install Postfix on Ubuntu Linux
We will mention some of the features of Postfix at the beginning of this article. Then we will fully explain how to install and configure Postfix on Ubuntu 20.04. Please stay tuned for the rest of this article.
Postfix Features
Postfix is one of the most common mail servers that can send and receive emails while running on Linux. The best feature of this server is that it is free and open-source, which makes it more popular among people. So, in this article, we will explain how to install Postfix on Ubuntu 20.04.
Install Postfix on Ubuntu 20.04
To install Postfix on Ubuntu 20.04, follow these steps:
We will launch the terminal on Ubuntu 20.04 and update the system to get all the new packages and updates ready. To do this, type the following command in the terminal and then press Enter:
sudo apt update
After successfully running the above command, type the following command in your terminal and then press Enter:
sudo DEBIAN_PRIORITY=low apt install postfix
Here, DEBIAN_PRIORITY is an environment variable that allows us to configure additional options with regular Postfix installation. These options appear in the terminal as notifications or dialog boxes that allow us to choose from the given options.
How to Configure Postfix on Ubuntu 20.04
In this section, we want to teach you to step by step how to Configure Postfix on Ubuntu 20.04. As soon as we press the Enter key to start the Postfix installation process, different types of email server configurations are displayed. After studying the types of configurations and deciding which email server to maintain, press the Enter key to continue as shown below:
Now we are asked to select our Mail Server Configuration type. Select the Internet Site option from that list and press the Enter key as shown below:
After doing this, we will ask to select our Fully Qualified domain name (FQDN) or System Mail Name. In this example, I typed my Mail Name in the textbox and then pressed the Enter key to continue, as shown in the image below:
At the next step, we are asking to select the Root and Postmaster Mail recipient. We can keep our original username in Ubuntu 20.04. Press Enter key to continue as shown below:
After doing this, we are asking to select all possible domains for which the email server is able to accept emails. We can add another domain name according to our needs. Otherwise, we can go to the default options and press the Enter key to continue, as shown in the image below:
It then asks if we want to force the synchronous update in the mail queue. As shown in the image below, select No, which is also the default option, and then press Enter to continue:
After that, we are asking to select the LANs. We can change them to suit our needs, or we can even select the default ones by pressing the Enter key as shown below:
Now we are asking to adjust the size range of Mailbox by bytes. This is using to determine the size of messages that the inbox can accept. Its default value is zero, which means that there is no limit to the size of the messages. As shown in the image below, stick to the default option and press Enter:
Then we are asking to select the Local Address Extension character. We stay with the default character and press the Enter key to continue, as shown in the image below:
Finally, we are asking to choose the Internet protocol we want. Select all from this list and then press Enter to continue, as shown in the image below:
Now the Postfix installation process takes a while to complete.
Conclusion
In this article, you learned about the features, installation, and setup of Postfix on Ubuntu 20.04. Everything was said about Postfix. To install this software, you can use our step-by-step tutorial, and if you have any questions or problems, you can ask in the comments section.
Share this Post
![Tutorial Install Fsniper on Ubuntu 20.04 [TOP]](https://neuronvm.com/wp-content/uploads/2021/10/Tutorial-Install-Fsniper-on-Ubuntu-20.04-TOP-150x150.webp)
Tutorial Install Fsniper on Ubuntu 20.04 [TOP]
Dominique YulinHow to Configure XFCE Desktop on Rocky Linux
Dominique Yulin
Chris Scott
How do I start and stop Postfix on Ubuntu?
Jannson Miller
To start and stop Postfix on Ubuntu, you can use the following commands:
Start Postfix:
sudo systemctl start postfixStop Postfix:
sudo systemctl stop postfixNikki
During installation, I was prompted to select a mail server configuration type. What should I choose?
Jannson Miller
Here are a few options commonly available:
No Configuration: Selecting this option means that no mail server will be installed or configured during the installation process. You can manually set up a mail server later if needed.
Internet Site: Choose this configuration if you’re installing a mail server to send and receive emails over the internet. It is suitable for small to medium-sized setups and allows you to enter your system’s mail name.
Internet with Smarthost: Select this option if you want to route all outgoing emails through a relay server (smarthost). This configuration is useful when you have a separate server or service to handle outbound email deliveries.
Satellite System: This configuration is appropriate when the system acts as a satellite receiving emails from a different machine and does not perform local mail delivery.
Local Only: Choose this option if you want the system to handle mail for local users only. It is suitable for systems where mail is not intended to be sent externally.
Valerie
Can I create a Certificate Signing Request (CSR) with OpenSSL? please show me the way.
Jannson Miller
Yes;
Step 1: Generate a Private Key First, you need to generate a private key that will be used in the CSR generation process. Run the following command to generate a 2048-bit RSA private key:
openssl genpkey -algorithm RSA -out private.keyStep 2: Create a CSR Now, use the private key to create a CSR:
openssl req -new -key private.key -out csr.pemThis command will prompt you to enter information for the CSR (e.g., Country, State, Common Name, etc.). Provide the required details based on your certificate needs.
Step 3: Verify CSR To verify the content of CSR, you can use the following command:
openssl req -text -noout -verify -in csr.pemThis will display the details you provided in the CSR.
Step 4: Save CSR Save the CSR file (csr.pem) to a secure location. This file is what you will need to provide to a Certificate Authority (CA) for certificate issuance.
Miguel
It has been a while since I used Postfix…it is relaible and secure. thanks for your informative guide
Jannson Miller
Your Welcome, thanks for your attention to this article.