Nil
Unauthorised e mail sent from my id

An unauthorised mail has been sent from my e mail id to all the addresses in my address book without my knowledge at 1.03 am on 29.11.08.The mail is a promotional mail for the products of some organisation having its website as www.nilisi.com.

I want yahoo customer care to look in the matter. This could cause serious problems if something else is sent through my id.