A change has been made to the way you delete ‘Email Lists & Redirections’ in the Lists & Redirections maintenance screen.
When you try to delete an email list or redirection it will now check that this has not been set as the ‘ME’ address for any user. If it has been you will need to set this user to another email address before you can delete the Email list or Redirection.
For more information about setting the ‘ME’ Address please see our update “User Maintenance -> Email Settings”