A new client side feature which Microsoft has released in Exchange 2010 SP1 is the ability of Outlook 2010 to automatically map all mailboxes to which the logged in user has full access. There by, on each mailbox that you have been granted Full Access, you will see it on your own personal mailbox. In Order to disable automatic mapping: Go to this user mailbox, right click on it and choose manage full mailbox access, then just remove your user from the full mailbox access page You can use Read more

  If your favorites bar in outlook is missing from any reason you can return it by simple step.         Close your outlook . Navigate to Start>run Type outlook.exe /resetnavpane Your favorites bar will be restored but you will need to re-add your folders again. Read more

Message header can provide us with valuable information that will allow better troubleshooting of mail flow problems To view message header in Outlook 2010 Open message you want to inspect Click on the small square expansion button of the message navigation screen. You will receive message properties with internet mail headers Read more