OK...I know that with Outlook and Exchange, Outlook creates what's called an "NK2" file that stores recently used addresses. The next time you start typing an address in the "To:" field, Outlook will start pulling the address from the NK2 file if it's in there.
What's the Zimbra equivalent of this? I've got users that depend on that for remembering addresses. An address they entered yesterday will not be remembered today when they start typing it again. Why is the Zimbra/Outlook combo not remembering recently used addresses?