How to Install Postfix on CentOS 8
In this article, I’m going to share how to install Postfix on CentOS 8 server. Let’s see:
Table of Contents
We need to remove Sendmail if it is installed on your system. Run this command to remove:
sudo dnf remove sendmail
So, we don’t have any Mail Transfer Agent (MTA) on our server. Now we can install Postfix:
sudo dnf install postfix
Check whether Postfix is installed or not:
rpm -qa|grep postfix
After that we need to enable & start Postfix:
# enable sudo systemctl enable postfix # start sudo systemctl start postfix
Now we can check status:
systemctl status postfix
Install Email Client
We’ll install mailx email client to check email send:
sudo dnf install mailx
After installation, I’m going to send a test mail to my system’s admin user obydul:
Hit enter. The system will ask to provide “Subject“. Then hit enter again and write the email body. After writing body, hit enter and type dot (.) & hit enter again to send mail.
To check whether the email has arrived at its destination, log in as root from the recipient side, and type mail in the terminal.
You’ll see the output like:Done! Postfix has been successfully installed on your CentOS 8. ?
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Below you will find some common used markdown syntax. For a deeper dive in Markdown check out this Cheat Sheet
Bold & Italic
Bold **double asterisks**
Three back ticks and then enter your code blocks here.
# This is a Heading 1
## This is a Heading 2
### This is a Heading 3
> type a greater than sign and start typing your quote.
You can add links by adding text inside of  and the link inside of (), like so:
To add a numbered list you can simply start with a number and a ., like so:
1. The first item in my list
For an unordered list, you can add a dash -, like so:
- The start of my list
You can add images by selecting the image icon, which will upload and add an image to the editor, or you can manually add the image by adding an exclamation !, followed by the alt text inside of , and the image URL inside of (), like so:
To add a divider you can add three dashes or three asterisks:
--- or ***