Here is an article describing one of the new features of Exchange 2010 SP1, Auto-Mapping. I ran into an issue today where a user’s mailbox was extremely slow. He had full access permissions to many mailboxes and even though he would close them auto-mapping would open those mailboxes again. Once the full access permissions were removed Outlook was back to normal functionality.
http://www.stevieg.org/2010/08/auto-mapping-shared-mailboxes-in-exchange-2010-sp1-with-outlook-2010/
You may be able to prevent the caching in Outlook by unchecking the download shared folders option.
ReplyDeletehttp://support.microsoft.com/kb/936247