Zimbra Mp: ((top))

Developing a feature for Zimbra Mobile Plus (MP) involves extending the Exchange ActiveSync (EAS) capabilities of the Zimbra Collaboration Open Source Edition. This module enables native push synchronization for email, calendars, and contacts without requiring third-party apps.

Below is a proposed feature enhancement and the development path to implement it. Feature Concept: "Dynamic Attachment Offloading"

Currently, Zimbra MP manages attachments through standard ActiveSync protocols. A high-value new feature would be Dynamic Attachment Offloading, which allows administrators to set policies that automatically convert large mobile attachments into secure, expiring links stored on Amazon S3 or external HSM storage to save mobile bandwidth and local server storage. Development Path

To develop this or any feature for Zimbra MP, follow these technical steps: zimbra mp

What is Zimbra - Definition, meaning and examples - Arimetrics

What is Zimbra. Definición: Zimbra is a collaborative computer program that is composed of emails, calendars, contacts, documents, Arimetrics

Zimbra Suite Plus, Part II – Administration , quick overview Developing a feature for Zimbra Mobile Plus (MP)

9. Recommendations

For organizations evaluating Zimbra MP:

  • Adopt if: You are deploying a new Zimbra environment, require modern UI/API, plan to run on Kubernetes, or need cloud-native scalability.
  • Wait if: You rely heavily on classic Zimlets, have a very large existing ZCS deployment (>10k users) with no tolerance for migration downtime, or lack Kubernetes expertise.
  • Migration path: Start with a proof of concept (PoC) on MP, use the hybrid coexistence period, migrate user cohorts in waves, and redevelop critical Zimlets via REST APIs.

Key Features of Zimbra MP

If you are searching for Zimbra MP, you likely want to know what it does better than the competition (Microsoft 365 or Google Workspace) or its own predecessors.

3. MTA (Message Transfer Agent) Servers

Based on Postfix, MTA servers handle incoming and outgoing SMTP traffic. In a single-server setup, mail lands directly on the mailbox server. In Zimbra MP, MTAs act as a front-line relay. They perform anti-spam (Amavis), anti-virus (ClamAV), and then route mail to the correct backend mailbox node. Adopt if: You are deploying a new Zimbra

How to Migrate from Single-Server to Zimbra MP

The most common scenario is moving from a working Zimbra Single-Server to a full Zimbra MP infrastructure. This is known as "expanding your system."

High-level steps:

  1. Backup your single server (full zmslapcat and store backup).
  2. Install new LDAP replicas – configure your original server as the LDAP Master.
  3. Install new mailbox nodes as empty servers. They will not hold data yet.
  4. Use the zmprov command to rebalance accounts: 
    zmprov moveAcct user@domain.com new-mailbox-server.domain.com
    Note: This moves the user’s entire mail store to the new node.
  5. Update DNS and MTA routes to recognize the new nodes.
  6. Decommission old services on the original server, leaving it potentially as a dedicated LDAP master or retiring it.

Pro Tip: For large migrations, use zmprov scripting and schedule moves during off-hours, as moving a 50GB mailbox can take time.