In smtpd_recipient_restrictions I put as first line: check_sender_access proxy:mysql:/etc/postfix/mysql-check-sender-access.cf
The check looks up the database for an address or a domain ad returns an action (OK, REJECT, and so on). Last day my server receives a lot of messages for an email address in one of the domain maintained by me. Say it "recei...@domain.tld". Even if the looks up for this email addres is succesfull and returns REJECT, all messages was correctly received and then delivered to the postoffice server. Why that messages was not blocked? What I have missed? thanks, rocsca