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Set/Change DNS nameservers on Ubuntu 18.04
Aug 21, 2019

How to Set DNS Nameservers on Ubuntu 18.04

The DNS nameservers (resolvers) are servers which are used by other devices to perform DNS lookup for a requested domain. In this guide, we’ll explain how to configure the DNS nameservers (resolvers) on Ubuntu 18.04.

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How to Edit Your Hosts File on Linux, Windows, and Mac
Apr 9, 2019

How to Edit Your Hosts File on Linux, Windows, and macOS

The hosts file is used to map domain names (hostnames) to IP addresses. It is a plain-text file used by all operating systems. In this article, we’ll provide instructions about how to modify the hosts file on Linux, macOS and Windows.

Install and integrate Rspamd
Mar 8, 2018 • series

Install and Integrate Rspamd

In this tutorial we will go through the installation and configuration of the Rspamd spam filtering system and its integration into our mail server and creating DKIM and DMARC DNS records.

Install PostfixAdmin on Ubuntu
Mar 1, 2018 • series

Set up a mail server with PostfixAdmin

Postfix Admin is a web based interface which allows users to configure and manage a Postfix based email server. With Postfix Admin you can create and manage multiple virtual domains, users and aliases.

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