During the installation process of Postfix you will be asked a series of questions. To install postfix in Debian from official repositories execute the following command. In this guide we’ll use Postfix as the mail transfer agent. The MTA is a software built in a server-client architecture, which is responsible for mail transfer between mail servers. The most important piece of software required for a mail server to function properly is the MTA agent. Query Domain DNS Step 2: Install Postfix Mail Server on Debianħ. Also, be aware that the DNS resolution for a domain added to /etc/hosts file won’t work via host, nslookup or dig commands. However, the domain should reply from other systems if you manually add the domain name to each of their /etc/hosts file. Be aware that the domain won’t replay to remote queries issued by other systems in your network, because we’re not using a DNS server. Also, test if the domain correctly replies to local queries by issuing the below commands. The domain name, the FQDN, the hostname and the IP address of the system should be returned by hostname command. After reboot, verify if the hostname has been correctly configured by issuing the following series of commands. Afterwards, reboot the machine in order to apply the hostname properly. Replace IP address and domain accordingly. Use your system IP address to resolve the name of the domain and FQDN as illustrated in the below screenshot. Next, setup your machine FQDN and add your domain name and your system FQDN to /etc/hosts file. Next, open /etc/nf file for editing with your favorite text editor and add the following line at the beginning of the file in order for DNS resolution to read the hosts file first. # apt-get install curl net-tools bash-completion wget lsof nanoģ. On the next step install the following software packages that will be used for system administration, by issuing the following command. In the first step, login to your machine with an account with root privileges or directly with the root user and make sure your Debian system is up to date with the latest security patches and software and packages releases, by issuing the following command. Step 1: Initial Configurations for Postfix Mail Server on Debianġ. In this tutorial we’ll use a private domain account for mail server setup configured via /etc/hosts file only, without any DNS server involved in handling DNS resolution.
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December 2022
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