We have Microsoft Server 2008R2 and Exchange 2010. We want to have a vacation calendar where employees would 1) email the boss with a vacation request and the boss would be notified, and if he approved, it would insert their vacation days into the calendar, or 2) enter it into the Vacation calendar, the boss gets notified, he approves, and then they get notified. We tried and couldn't make it work, then someone told us about Sharepoint, but I just watched a video and that seemed like overkill to set up just for vacations? Any suggestions? What is the usual practice?