[Dovecot] dovecot transport with postfix and recipient restrictions.

I'm using dovecot deliver with my postfix smtp. In postfix configuration I have:

smtpd_recipient_restrictions = check_recipient_access hash:/etc/postfix/maps/recipient_checks

and in recipient_checks I have:

mail@example.com REJECT. It doesn't work. Perhaps the recipient restriction has to be put in dovecot side? How can I do this.