https://blog.param.sh/tags/ubuntu/Recent content in Ubuntu on DevLogsHugoenSun, 22 Mar 2026 14:24:59 +0530https://blog.param.sh/posts/how-to-setup-iredmail-server-on-linux/Sun, 22 Mar 2026 14:24:59 +0530https://blog.param.sh/posts/how-to-setup-iredmail-server-on-linux/<div class="notice note"> <div class="notice-title"> <i class="fa-solid fa-sticky-note" aria-hidden="true"></i>Note </div> <div class="notice-content">This walkthrough is part of the <a href="https://blog.param.sh/series/cloning-gmails-architecture" >Cloning Gmail&rsquo;s Architecture</a> series. For better context, I suggest you to start from <a href="https://blog.param.sh/posts/mail-server-communications-101/" >Part 1</a></div> </div> <p>In this tutorial, we will look how to configure a mail server (iRedMail) on the EC2, assign an Elastic IP (static public IP), enable port access for SMTP / IMAP communications and more, to replicate an actual email flow from server to server.</p> <h3 id="pre-requisites"> Pre-Requisites <a class="heading-link" href="#pre-requisites"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ol> <li>You have access to a linux environment where you want to configure iRedMail.</li> <li>Network connection on that linux environment.</li> <li>Privileges to run the commands as a super user.</li> <li>A TLD domain to setup mail server&rsquo;s hostname and configure settings.</li> </ol> <div class="notice info"> <div class="notice-title"> <i class="fa-solid fa-exclamation-circle" aria-hidden="true"></i>Info </div> <div class="notice-content">Make sure to replace <code>example.com</code> with the domain that you have registered with your DNS provider. Use of <code>example.com</code> is for merely demo purposes to showcase how DNS mapping is working.</div> </div> <h2 id="prepare-the-linux-instance"> Prepare the Linux Instance <a class="heading-link" href="#prepare-the-linux-instance"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h2> <p>Login to the linux instance:</p>