Jul 20 11:44:36 monster postfix/smtpd[22060]: fatal: parameter "smtpd_recipient_restrictions": specify at least one working instance of: check_relay_domains, reject_unauth_destination, reject, defer or defer_if_permit
Jul 20 11:44:37 monster postfix/master[9513]: warning: process /usr/lib/postfix/smtpd pid 22060 exit status 1
Jul 20 11:44:37 monster postfix/master[9513]: warning: /usr/lib/postfix/smtpd: bad command startup -- throttling