Block black list email

Block black list email

Hello,

I want to block some domains for stop send me email's, so i go to spam controll and add de domains and on email delivery put for reject, but i still receive the email's form that domains.. I need to block this domains because i unsubscribe spam and still receive the email's from this domains i had block.. What i need to do more for stop receive this email's? 

Thanks for fast answer.