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Zimbra Knowledge Base

Short, practical technical guides for setup, migration, security, backup, and deliverability issues.

Kurulum

DNS checklist before Zimbra installation

Why MX, A, PTR, SPF, DKIM, and DMARC records must be planned correctly.

Migrasyon

Moving from Exchange or Office 365 to Zimbra

Pilot migration, synchronization, and MX cutover steps that reduce user disruption.

Bakım

Why does the Zimbra mail queue grow?

Practical checkpoints for blacklist, DNS, relay, spam, or disk-related issues.

Güvenlik

SSL renewal and TLS hardening in Zimbra

Service and certificate steps to consider with Let’s Encrypt or commercial SSL.

Yedekleme

How should a Zimbra backup strategy be designed?

A baseline approach covering RPO, RTO, off-site copies, and restore testing.

Teslimat

Why do emails land in spam?

How IP reputation, SPF/DKIM/DMARC, content score, and reverse DNS affect deliverability.

Teslimat

SPF, DKIM, and DMARC configuration in Zimbra

Reduce spam placement and spoofing risk by configuring domain authentication records correctly.

Güvenlik

Zimbra anti-spam layers: RBL, SpamAssassin, and Amavis

Balance spam protection with RBL checks, content analysis, and whitelist management.

Güvenlik

Zimbra DoSFilter configuration and false-block checks

Limit excessive webmail and mailboxd requests while protecting legitimate users.

Teslimat

Deliverability checklist for high-volume sending in Zimbra

DNS, list hygiene, bounce tracking, and reputation checks for organizations that send bulk email.

Bakım

Zimbra quota management and mailbox cleanup

Manage large attachments, trash, and archive policy before mailbox quota is exhausted.

Yönetim

Distribution list and alias management in Zimbra

Build department lists, announcement addresses, and alias structures securely and sustainably.

Kullanıcı Rehberi

Using contacts and GAL in Zimbra

Practical tips for contact cards, autocomplete, CSV import/export, and the Global Address List.

Kullanıcı Rehberi

Zimbra calendar and meeting scheduling tips

Participant availability, meeting-room resources, recurring events, and reminder settings.

Kullanıcı Rehberi

How to organize email filters in Zimbra

Manage move, tag, forward, and delete rules without conflicts.

Kullanıcı Rehberi

Zimbra Briefcase usage recommendations

A short guide for shared files, version discipline, sharing permissions, and quota tracking.

Mobil

Zimbra ActiveSync and mobile sync checklist

Checkpoints for healthy mail, calendar, and contact synchronization on mobile devices.

Bakım

Checklist before applying Zimbra patches

Prepare backup, version compatibility, maintenance window, and rollback plan before patching.

Kurulum

When are Zimbra proxy and memcached needed?

Traffic-routing approach for webmail, IMAP, POP, and ActiveSync in multi-server environments.

Yönetim

Delegating permissions with Zimbra Delegated Admin

Delegate account, distribution list, and resource management without granting full administrator access.

Frequently Asked Questions

For a more specific issue, contact us through the support portal or quote form.

Do you inspect Zimbra servers on-site or remotely?

Most work is handled through secure remote access. On-site service or data center coordination can be planned when needed.

Can emails be lost when moving from an old mail system to Zimbra?

With proper pilot migration, synchronization, and validation steps, data-loss risk is minimized.

How do you handle urgent mail outages?

Based on SLA priority, we quickly analyze root causes through mail queue, DNS, service, and disk health checks.

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