Professional training – Linux & Unix

Postfix Mail Server

Hands-on Postfix Mail Server course: you work on main.cf and master.cf, SMTP, submission and TLS and SPF, DKIM, DMARC and take away knowledge you can apply right away.

Duration
6 hours, one session
Level
Intermediate
Format
Online or on-site
Language
German or English
Certificate
Certificate of attendance

Overview

In “Postfix Mail Server” we combine fundamentals and practice: you get to know main.cf and master.cf, SMTP, submission and TLS and SPF, DKIM, DMARC, apply what you learn in exercises and receive templates and checklists for your own use.

Linux and Unix form the backbone of servers, cloud platforms, databases and network services. Anyone running these systems needs confident command-line skills, a clear understanding of file systems, services and networking, and the ability to narrow down problems quickly. Our Postfix Mail Server courses are aimed at beginners, administrators and operations teams who want to consolidate or deliberately extend their knowledge. We work exclusively on real systems in a provided lab environment: you type, fail, analyze and solve. The course runs online or on site, lasts one day and is offered at a fixed price per participant.

The course is delivered live – either online in a virtual classroom or on-site in our training rooms in Munich, Salzburg, Berlin, Augsburg, Hanover, Bremen, Stuttgart and Kaiserslautern. We can also run it exclusively for your team.

Focus areas of the course

main.cf and master.cfSMTP, submission and TLSSPF, DKIM, DMARCVirtual domains and aliasesQueue managementSpam protection and relay rules

Who is this course for?

  • System administrators and Linux beginners
  • DevOps and platform engineers
  • Operations and support teams in the data center
  • Developers and database admins working with Linux

What you will be able to do

  • You know the key topics of Postfix Mail Server – main.cf and master.cf, SMTP, submission and TLS, SPF, DKIM, DMARC, Virtual domains and aliases, Queue management and Spam protection and relay rules – and can apply them in practice.
  • You work confidently on the command line and use Postfix Mail Server efficiently in daily work.
  • You configure and operate Postfix Mail Server in a traceable, standards-compliant way.
  • You narrow down Postfix Mail Server faults systematically and fix them quickly.
  • You automate routine tasks and secure your systems reliably.

Course outline

Module 1 Fundamentals and concepts of Postfix Mail Server
  • Key terms, architecture and placement within the Linux and Unix landscape
  • Important directories, configuration files and tools
  • Package management, services and standard workflows
  • Differences from related technologies and distributions
Module 2 Focus areas: Postfix Mail Server
  • main.cf and master.cf
  • SMTP, submission and TLS
  • SPF, DKIM, DMARC
  • Virtual domains and aliases
  • Queue management
  • Spam protection and relay rules
Module 3 Configuration and administration
  • Installing and initially configuring Postfix Mail Server step by step
  • Users, groups, permissions and access control
  • Starting, controlling and permanently enabling services
  • Documenting and versioning configuration in a traceable way
Module 4 Operations, security and performance
  • Monitoring, logging and evaluating system data
  • Hardening according to common best practices
  • Analyzing resources and spotting bottlenecks
  • Planning backup, recovery and maintenance windows
Module 5 Troubleshooting and hands-on labs
  • Systematic troubleshooting with logs, tracing and system tools
  • Reproducing and fixing typical Postfix Mail Server failure patterns
  • Automating recurring tasks with scripts
  • Case studies and exercises from real operating scenarios
Module 6 Transfer to your daily work
  • Exercise based on a realistic case
  • Typical mistakes and how to avoid them
  • Checklist and templates to take away
  • Open questions, outlook and resources for further learning

Prerequisites

Entry-level courses require no Linux knowledge. Advanced courses assume solid command-line basics. Basic knowledge of the topic is helpful.

Technical requirements

Laptop with a current browser and SSH client; the Linux lab environment for Postfix Mail Server is provided by us.

Dates & locations

For every location we suggest a date roughly four weeks ahead. Your preferred date is always possible.

  • Munich Tue, 15 December 2026 6 hrs Request
  • Salzburg Wed, 16 December 2026 6 hrs Request
  • Berlin Tue, 15 December 2026 6 hrs Request
  • Augsburg Fri, 11 December 2026 6 hrs Request
  • Hanover Thu, 10 December 2026 6 hrs Request
  • Bremen Mon, 14 December 2026 6 hrs Request
  • Stuttgart Fri, 11 December 2026 6 hrs Request
  • Kaiserslautern Thu, 10 December 2026 6 hrs Request
  • Online Fri, 11 December 2026 6 hrs Request

Frequently asked questions

Do I need prior knowledge for Postfix Mail Server?

That depends on the level. Entry-level courses assume no Linux knowledge, while advanced Postfix Mail Server courses expect solid command-line basics. If you are unsure, we are happy to recommend the right starting point in a short pre-call.

Do we work on our own systems or in a lab environment?

For Postfix Mail Server we provide a lab environment with real Linux or Unix systems that you access via SSH. That lets you configure safely and provoke failures on purpose. You do not need your own systems, but you are welcome to bring your own questions.

How much does “Postfix Mail Server” cost?

The course costs a flat €949 plus VAT per participant – whether online or on-site. This includes 6 hours of live training with a trainer, course materials, a lab environment and a certificate of attendance.

Can I suggest my own date?

Yes. For every location we suggest a date roughly four weeks ahead. In the request form you can always describe your preferred date or period in free text – we check availability and get back to you within one working day.

Is the course online or on-site?

Both are possible: live online in a virtual classroom or on-site in Munich, Salzburg, Berlin, Augsburg, Hanover, Bremen, Stuttgart and Kaiserslautern. We can also run the course exclusively for your team.

Can the course be tailored to our team?

Yes. Tailor-made courses cost approx. €4,500 more, depending on the topic and by arrangement. We agree content, examples and exercises with you in advance.

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