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As the King and Queen have celebrated their 20th wedding anniversary in Italy, the Princess Royal has praised her sister-in-law for her 'understanding' of her role in Tatler.

Mansfield Town striker Lucas Akins, 36, struck Adrian Daniel, 33, after he failed to see the cyclist as the footballer pulled out of an awkward T-junction.

Fans of the Netflix hit, created by Jenji Kohan, have shared their shock after an old clip went viral.

by George Whittaker Introduction

Email remains a cornerstone of modern communication. From business notifications to personal messages, having a robust and reliable mail server is essential. While cloud-based solutions dominate the mainstream, self-hosting a mail server offers control, customization, and learning opportunities that managed services can't match.

In this guide, we will explore how to set up a secure and efficient mail server using Dovecot on an Ubuntu Server. Dovecot is a lightweight and high-performance IMAP and POP3 server that provides secure access to mailboxes. When paired with Postfix, it forms a powerful mail server stack capable of sending and receiving messages seamlessly.

Whether you're a system administrator, a DevOps enthusiast, or simply curious about running your own mail infrastructure, this article provides a deep dive into configuring Dovecot on Ubuntu.

Prerequisites

Before we dive into configuration and deployment, ensure the following requirements are met:

• Ubuntu Server (20.04 or later recommended)

• Root or sudo access

• Static IP address assigned to your server

• Fully Qualified Domain Name (FQDN) pointing to your server

• Proper DNS records:

  • A record pointing your domain to your server IP

  • MX record pointing to your mail server’s FQDN

  • Optional: SPF, DKIM, and DMARC for email authentication

You should also ensure that your system is up-to-date:

sudo apt update && sudo apt upgrade -y

Understanding the Mail Server Stack

A modern mail server is composed of several components:

• Postfix: SMTP server responsible for sending and routing outgoing mail.

• Dovecot: Handles retrieval of mail via IMAP/POP3 and secure authentication.

• SpamAssassin / ClamAV: For filtering spam and malware.

• TLS/SSL: Provides encrypted communication channels.

Here's how they work together:

1. Postfix receives email from external sources.

2. It stores messages into local mailboxes.

3. Dovecot lets users access their mail securely using IMAP or POP3.

4. TLS/SSL encrypts the entire process, ensuring privacy.

Step 1: Installing Postfix and Dovecot Install Postfix

sudo apt install postfix -y

During installation, you will be prompted to choose a configuration. Select:

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