1. Send an email to abuse@yahoo-inc.com from another email address or at "http://abuse.yahoo.com".\n\n2. Then, contact Yahoo! at "http://login.yahoo.com", select forgot your password.\n\n3. If that fails to reset, contact Yahoo! at their password department (408)-349-1572 -- Can't promise their phone department will fix, but they'll know where to go next.\n\n4. In the future, review the email (copy links to a text file for example) and take note of the source email address.  For example, Corporate emails from Yahoo! don't come from their free mail system address space.  Webmaster@yahoo.com is not a corporate email address.