Calendar busy data not updating
In most cases, three to six months should be sufficient.
Follow the appropriate steps below to reset the number of months Outlook for Windows will publish your free/busy time.
There aren't many articles about the calender - nor can I find a lot of settings/customization in Outlook 2007.You can reset how many months are included in your free/busy folder.However, since an Exchange server can host several thousand mailboxes, do not increase this setting beyond what you actually need. They have a lot of meetings and their schedule is very important to them. The server is Windows Server 2003 running Exchange 2003.The problems are with the secretaries, who have to keep track of virtually all the calenders.