Zimbra Collaboration: Full Email, Calendar, and Contacts on Your Servers Training Course

The Landscape of Collaboration Sovereignty

• Zimbra compared to Microsoft Exchange and Google Workspace regarding total cost.
• Benefits of single-tenant control, auditing, and data residency.
• Feature comparison between Network Edition and Open Source Edition.

Installation and Setup

• Preparation: hostname configuration, DNS, firewall settings, and OS hardening.
• Deployment patterns for single-server and multi-server setups.
• Using the installation wizard, creating the initial domain, and provisioning admin accounts.

Core Messaging Features

• Integrating Postfix and OpenLDAP within Zimbra.
• Configuring webmail, IMAP, and POP3 clients.
• Enabling mobile access via ActiveSync, Exchange Web Services, and CalDAV.

Groupware Capabilities

• Shared calendars, resource scheduling, and delegation.
• Contacts and global address lists linked to organizational units.
• Briefcase file sharing and document versioning.

Security and Authentication

• SSL/TLS setup and automation with LetsEncrypt.
• Implementing two-factor authentication using TOTP and hardware keys.
• Tuning anti-spam (amavis, DKIM, SPF) and anti-virus (ClamAV) systems.

Directory Federation

• External LDAP and Active Directory authentication.
• Delegated administration and domain separation for multi-tenant scenarios.

Backup and Disaster Recovery

• Real-time backup and restore operations using zmbackup.
• Snapshot strategies for mail store and database volumes.
• Cross-site replication and failover procedures.

Administration and Monitoring

• Deep dive into the Admin console: COS, quotas, and message retention.
• Using CLI utilities for batch operations and scripting.
• Performance tuning and JVM memory allocation.