Using this option it is possible to notify senders if a local user has moved to another address. For example, if a user leaves an organization but still receives occasional mail at her local address, it may be convenient to notify anyone sending mail to the user of the move and new contact information for that user. Usage is just like the previous types of mappings and so won't be documented specifically here, though and example of a relocated mapping will be given to display the types of information that can be provided by this feature.
As an example, let's say I move from my current company to the far more relaxed atmosphere of the Oval Office. To make sure all of my friends and clients can keep in touch with me, I could provide a relocated mapping with a Name of email@example.com with a Maps to... of firstname.lastname@example.org. While this won't redirect mail to me at my new home, it will notify the people trying to contact me that I've changed email addresses. Hopefully they will all update their address books and resend their mail to my new address.