Introduction To Postfix Training in Teesside

Introduction to Postfix Training​ Course Outline

Module 1: Postfix Basic Configuration

• Introduction
• Postfix Configuration Files
• Domain Name to Use in Outbound Mail
• What Domains to Receive Mail for
• Clients
• Destinations
• Delivery Methods
• Trouble to Report to the Postmaster
• Proxy/NAT External Network Addresses
• Postfix Logging
• Running Postfix Daemon Processes Chrooted
• Hostname
• Domain Name
• Network Addresses

Module 2: Postfix Architecture Overview

• How Postfix Receives and Delivers Mail?
• Postfix Behind the Scenes
• Support Commands

Module 3: Postfix Address Rewriting

• Purpose
• Rewrite Message Headers or Not, or to Label as Invalid
• Postfix Address Rewriting Overview
• Address Rewriting When Mail is Received and Delivered
• Address Rewriting with Remote Delivery
• Address Rewriting with Local Delivery
• Debugging Your Address Manipulations

Module 4: Virtual Domain Hosting

• Canonical Versus Hosted Versus Other Domains
• Local Files Versus Network Databases
• Shared Domains, UNIX System Accounts
• Postfix Virtual ALIAS Example: Separate Domains, UNIX System Accounts
• Postfix Virtual MAILBOX Example: Separate Domains, Non-UNIX Accounts
• Non-Postfix Mailbox Store: Separate Domains, Non-UNIX Accounts
• Mail Forwarding Domains
• Mailing Lists
• Autoreplies

Module 5: Bottleneck Analysis

• Introducing the qshape Tool
• Trouble Shooting with qshape
• Healthy Queue
• Deferred Queue Full of Dictionary Attack Bounces
• Congestion in the Active Queue
• High Volume Destination Backlog
• Postfix Queue Directories

Module 6: Content Inspection

• Content Inspection Overview
• Stopping Backscatter Mail
• Built-in Content Inspection
• After-Queue Content Filter
• Before-Queue Content Filter
• Before-Queue Milter Applications

Module 7: SMTP Relay and Access Control

• Relay Control, Junk Mail Control, and Per-User Policies
• Restrictions that Apply to all SMTP Mail
• Getting Selective with SMTP Access Restriction Lists
• Delayed Evaluation of SMTP Access Restriction Lists
• use of smtpd_Recipient_Restrictions
• SMTP Access Rule Testing

Module 8: Postfix Lookup Table Overview

• Postfix Lookup Table Model
• Postfix Lists Versus Tables
• Preparing Postfix for LDAP or SQL Lookups
• Maintaining Postfix Lookup Table Files
• Updating Berkeley DB Files Safely
• Postfix Lookup Table Types