Now, your postfix is successfully installed on your Debian 10 machine. When you’ve finished, press TAB, then ENTER. If it shows a subdomain like, change it to just. Enter your domain (which you mapped to this server earlier at the start of this tutorial) and then press OK. you will be asked to enter the System mail name, which is actually the domain name. So, press TAB, then ENTER to continue with the installation. The default option is the Internet Site and that’s the recommended one for this tutorial too. Press Enter to see next screen which shows options to select. Once all the package is downloaded you will see a screen like the one below which will be asking you to choose the type of configuration. sudo apt install mailutilsįinally, install the postfix package itself: sudo apt install postfix Next, install mailutils, a package which postfix requires to function properly. Let's first update the Package Database itself: sudo apt update The next step is two install two important packages mailutils, which includes programs necessary for Postfix to function, and the postfix itself. Just confirm your Debian server version first using the below lsb command: lsb_release -a The output should show the domain name e.g. And, in order to check the same you can run the following command: hostname Note, the hostname of your machine must match your domain name. One valid domain name eg:, which should be pointing to your Debian 10 server.One Debian 10 server, and a sudo non-root user.Postfix is one of the most popular open-source Mail Transfer Agent (MTA) which route and delivers mails. But, if you are not using a third party and want to set up something on your local server which can help you to send emails at scale, then you can use Postfix for that purpose. If you are already using a third-party service provider like Sendgrid, Pepipost etc to send emails, then you really don't need a Postfix. In this tutorial, you will learn how to install and configure Postfix on your server, so that other applications installed on that server can use the Postfix to send emails. The author voluntarily contributed this tutorial as a part of Pepipost Write to Contribute program.
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