It should be saved as long as you want. You might want to check the
auto-archiving properties on the folder to ensure the items don't get
archived to a PST file (right click on the Calendar folder, choose
Properties and go to the AutoArchive tab)
> How long does these dates in the calender go back?
> 10years? were can you set the option for how long?
> Have a customer that wants them saved for a long time.
> We also use exchange 2007.
> Maybe its there the setttings are?