he 10.6.4 update is recommended for all servers currently running Snow Leopard Server version 10.6. It includes Safari 5 and general operating system fixes that enhance the stability, compatibility and security of your server, as well as specific fixes for:


- CalDAV querying of email addresses with Active Directory and Open Directory servers
- stability and reliability accessing Wiki Server pages
- view movies on Wiki Server with Safari on iPad
- accessing publicly accessible Wikis when logged in to the Wiki Server
- listing blogs on Wiki Server
- vacation mail notices that span across multiple days
- updates from Software Update Server viewable by clients
- stability and reliability to Software Update Server synchronization
- downloading of software updates by Software Update Server
- creating NetInstall images which include iLife updater packages
- address issues copying, renaming, or deleting files on SMB file servers
- improve reliability of VPN connections
- configuring accounts in Server Preferences when bound to an external directory service
- CalDAV handling of Unicode text and attachments
- stability and reliability of Podcast Capture remote camera recordings
- submitting content into Podcast Producer using mv and cp command-line tools
- preventing time drift when capturing dual-source video in Podcast Capture
- syncing Software Update catalogs behind unauthenticated proxy servers
- upgrading and importing records from older Open Directory servers
- password expiration notifications for Mobile Account users
- using Server Admin to connect to servers in IPv6 environments
- creating NetRestore images from volumes with fragmented catalog files
- ordering of items in System Image Utility "Add Packages and Post-Install Scripts" action
- using Internet Explorer with web-based calendar, wiki, email rules and password reset
- adding and removing imported users in Server Preferences
- synchronizing Portable Home Directory content
- using iCal web interface within select time zones
- previewing and capturing dual-source video in Podcast Capture
- server-side filtering of incoming mail messages
- using chained digital certificates for mail services
- creating images with System Image Utility
- automating installation of NetRestore images
- preventing brute force password attacks
- using sudo command with authenticated Open Directory binding
- binding to Active Directory domains with invalid service records
- creation of mobile accounts for Active Directory users
- correcting a problem that would cause the Software Update cache to grow excessively
- reliability of services using Grand Central Dispatch
- duplicate serial number alerts on servers with multiple network interfaces

System Requirements
Mac OS X 10.6 - Mac OS X 10.6.3 Server