To manage Antispam for the entire account: 

1.

Select Account settings in the Account menu. On the bottom of your domain name list, the following functions will show::
 

 


 

2.

 

Click the add Antispam resource for all mailboxes or for all mail resources (box, forward, alias, responder) in this account.

3.

You can delete all Antispam settings in this account by clicking the Trash icon