We are pleased to announce: The Zimbra Collaboration Suite version 5.0.10

Key Enhancements:
30387 - Allow each domain to have a default set of Zimlets zimbraZimletDomainAvailableZimlets
30644 - Per user optional appointment history logging zimbraCalendarMaxRevisions (default 1 essentially preserves non-revision behavior, 0 is unlimited)
30614 - Calendar integrity checking tool zmcalchk
30623 - separate forward filtering rules and mail forwarding features zimbraFeatureMailForwardingInFiltersEnabled
30833 - Authenticated-User: header or something similar needed zimbraSmtpSendAddAuthenticatedUser
25884 - ZCO : User not alerted of certain errors in a noticable way Copy of sync failures delivered to inbox (turnOffLocalFailures registry entry).

Builds Now GA:
Network Edition - Ubuntu 8.04 LTS x86 & x86_64

Notable Fixes:
27645 - Exceptions to recurring appointments are lost if the series is changed
30646 - CalDav will remove (hard delete invite) if you hit 'ok' in the notification
30128 - nginx: make capability list configurable zimbraReverseProxy[Imap/Pop3]EnabledCapability
31080 - 5.0.9 upgrade broke sorting on From column in Inbox
29445 - Out of RPC cache msg in AJAX client
30948 - Need custom java upgrade program for upgrading domain wiki templates (faster upgrades)

Best practice is to make a backup before preforming any server maintenance: Backup and Restore Articles - Zimbra :: Wiki

5.0.10 Network Edition Release Notes

5.0.10 Network Edition Downloads

5.0.10 Open Source Edition: Release Notes & Downloads (updated builds available)

Be sure to subscribe to the blog - enjoy this release!
-The Zimbra Team