How to Set Up Your Own Mail Server on a VPS

Name: How to Set Up Your Own Mail Server on a VPS
Rating: 3.6 (4 reviews)

Build and Configure a Secure Mail Server on a VPS from Scratch

Created byJohannes Lochner

Last updated 4/2026

English

English [Auto],

What you'll learn

Choosing the right VPS provider and domain
DNS setup (MX, SPF, DKIM, DMARC)
Installing and configuring Postfix and Dovecot
SSL/TLS setup for secure connections

Course content

4 sections • 15 lectures • 4h 45m total length

How to use the course2:14
Learn how to navigate and use the course, access PDFs with commands and config, explore additional resources, ask questions in the Q&A, and adjust video resolution for clear code.
Introduction4:23
Learn to set up a mail server on a bare metal or VPS, verify port 25 and deliverability factors like domain on Namecheap and PTR records, and use multiple IPs.
Connect to the VPS4:40
Learn to connect to your VPS with Putty on Windows, using IP and password or SSH key, accept the host key, log in as root, and change the password.
Linux Shell Crashcourse20:55
Learn a Linux bash shell crash course covering essential commands (cd, ls, pwd), navigation, vim basics, root access, and file permissions to prepare your own mail server setup.

Set up other than root user9:05
Create a non-root user with a home directory, set a password, and grant sudo. Log in via ssh to verify, then switch shell to bash with sudo visudo if needed.
Set Up SSH Zertificat login10:21
Create and configure an ssh key for secure login as a non-root user, set up authorizedkeys, and prepare to disable password and root login for enhanced mail server security.
Disable root ssh login and plain password auth5:27
Secure your vps by disabling root ssh login and enforcing key-based access with ssh certificates. Update sshd_config, disable password auth, restart sshd, and verify login via private key.

Installing Postfix41:11
Install postfix as your mail transfer agent on a VPS and configure a fully qualified domain name. Create DNS A and MX records and open port 25 for deliverability.
How to install Dovecot (IMAP Server)50:59
Learn to set up a secure Ubuntu mail server using Dovecot IMAP, Postfix, and Let's Encrypt TLS certificates, enabling submission on port 587 and client access via Thunderbird.
Installing postfixadmin (Easy Admin via WebUI)51:45
Install postfixadmin to simplify mail server administration via a web UI on your VPS. Learn step-by-step setup and configuration to run an easy, centralized mail admin interface.
How to set up a new domain in PostfixAdmin8:09
Install and configure postfix admin to manage a mail server, host multiple domains, and create aliases and mailboxes, with MariaDB and dovecot integration.

How to set up the SPF Protocol13:03
Set up your mail server’s SPF by adding a DNS text record listing allowed IP addresses and MX hosts, install the Postfix SPF package, and enforce SPF checks in Postfix.
How to set up the DKIM Protocol31:18
Learn to implement the DKIM protocol for your mail server by configuring OpenDKIM, generating keys, updating DNS TXT records, wiring Postfix via a Unix socket, and validating SPF and authentication.
How to set up the DMARC Protocol29:51
Publish and validate DMARC records, configure SPF and DKIM alignment, and choose a policy (none, quarantine, reject) to protect your domain, monitor reports, and integrate Open Denmark with Postfix.
Send off2:11
Congratulations, you now have your own mail server up and running on a VPS. Explore related services like scalable hosting, mail and web servers, AI applications, and service helper bots.

Requirements

You’ll learn everything you need in this course, but without a bit of background knowledge, it can feel a little overwhelming—it’s definitely not the easiest task.

Description

Want to take full control of your email by hosting it yourself? In this hands-on course, you'll learn how to set up and manage your own mail server on a Virtual Private Server (VPS). Whether you're a developer, sysadmin, or tech enthusiast, this course will walk you through every step—from purchasing a VPS and configuring DNS, to installing Postfix, Dovecot, and securing your server with SSL/TLS, spam protection, and more.

By the end of the course, you’ll have a fully functioning, secure, and private mail server capable of sending and receiving email just like any commercial service, but fully under your control.

You'll also gain a deeper understanding of how email works behind the scenes, including SMTP, IMAP, and DNS records. Plus, you'll learn best practices to improve deliverability and keep your messages out of spam folders. The course also includes optional lessons on integrating a webmail interface for administration.

What You'll Learn:

Choosing the right VPS provider and domain
DNS setup (MX, SPF, DKIM, DMARC)
Installing and configuring Postfix and Dovecot
SSL/TLS setup for secure connections
Tips for keeping your mail server out of the spam folder

Take ownership of your email infrastructure and gain valuable sysadmin skills in the process!

Who this course is for:

Anyone looking to host their own small mail server on a VPS

How to Set Up Your Own Mail Server on a VPS

What you'll learn

Explore related topics

Course content

First Steps4 lectures • 32min

Basic Security Setup for your VPS3 lectures • 25min

Setting up the mailserver4 lectures • 2hr 32min

How to set up Protocols (SPF, DKIM, DMARC)4 lectures • 1hr 16min

Requirements

Description

Who this course is for: