How to Install Proxmox Mail Gateway on Debian 11

[Administrator]

Introduction

Proxmox Mail Gateway is an open-source email security solution that acts as a layer between users and your origin mail server. It helps eliminate incoming or outgoing spam or email threats. In addition, it comes with a user-friendly web-based management interface that allows you to control everything easily.

This article explains the installation of Proxmox Mail Gateway, using Nginx as a reverse proxy to serve the management interface & securing the management interface with an SSL certificate on a Debian 11 machine.


Prerequisites

To complete this guide, you will need to:

Deploy a fresh Debian 11 Server

Point a subdomain to your server
Change Hostname

You are required to point a subdomain to your server using A record. The same subdomain will be used throughout the article. For example, mailgateway.domain.tl

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. Add hostname in /etc/hostname.
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# nano /etc/hostname

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Overwrite the existing content with your subdomain and save the file using CTRL + X then ENTER. Add hostname in /etc/hosts.

# nano /etc/hosts


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Paste the following line below 127.0.0.1 localhost and save the file using CTRL + X then ENTER.

127.0.0.1 your_subdomain
Reboot the server to ensure everything works.

# rebootVerify Hostname

After your server is up and running, run the following command and check if the output matches with your subdomain

# hostname
Expected output

your_subdomain