Master and Child Servers

SSL/TLS

• Letsencrypt SSL Installation
• Postfix MTA SSL/TLS Installation
• Creating PEM files with SSL/TLS Certificates
• Adding Your Own SSL/TLS Certificates in the GUI

Installation

• Upgrading the Ubuntu OS
• First Steps
• Repository and Software Installation
• Migrating Master Data from v4 to v5

Configuration

• Two-Factor Authentication (2FA)
• Domains
• Networks
• Email Objects
• Route Exceptions
• Process Policies
See all 12 articles

Cluster

• Mail Transport Settings
• Member Servers
• Administrators and Permissions
• Authenticators
• Hash Reporting
• Software Updates and Release Cycles

Policy Guides

• Managing Domains, Networks and Email Objects
• Blacklist / Whitelist Guide

Components

• Spam Score Mods
• Custom Spam Rules - Writing Rules
• File Extensions
• MIME Types

Portal

• Portal Report CSS Classes
• Importing Portal Users
• Groups
• Group Administrators
• User Report Frequency

Network

• DNS Requirements
• MTA Hostname Restrictions
• Ports and Protocols
• RBL Checks
• SPF Checks
• SPF Records

Common Issues

• Problem: Parts of GUI not Working
• Problem: Postfix "lost connection"
• Error warning: TLS library problem
• Problem: GUI not loading

Reporting and Email Templates

• Portal User Reports
• Summary Reports
• Email Template Basics
• Master Global Report Templates
• Portal User Report Templates

System Settings

• Recipient Verification
• Virtual Host (Web URL)
• TLS Connections (browser SSL)

Design

• Customizing Master Summary Reports CSS

Gullekson Virtuoso

• What is Gullekson?
• Engine Flow
• Email Queues