Zimbra 10.x Version Upgrade

Job ID: 40311946

Budget: $10 – $30 USD

I’m running Zimbra 10.x in production and need a clean version upgrade to the latest stable release published at https://zcsplus.com/. The goal is a seamless transition with no mail loss, minimal downtime, and full preservation of existing accounts, settings, calendars, and filters.

Key deliverables:
• Create a verified full-system backup and rollback plan
• Carry out the in-place upgrade from 10.x to the release available on the link above
• Resolve any dependency or schema changes, including postfix, LDAP, and nginx adjustments
• Re-enable all services, test inbound / outbound mail flow, ActiveSync, and web client access
• Provide a short post-upgrade report detailing steps taken, issues found, and how they were fixed

SSH access and current OS details will be supplied once we agree on timing. Please be comfortable with ZCS CLI tools, rolling upgrades, and live troubleshooting, as the mail server is mission-critical.