noel jones ubdarhmeganvbhcsorg joão santos wrote hello postfixusers subscribers greylisting spf checks postfixes smtpd_recipient_restrictions configuration seems postfix 2 checks even first one fails thats bit waistful especially spf checks somewhat heavy many subprocesses waiting dns resolutions would like spf checks case email greylisted im using postgrey first check configuration like smtpd_recipient_restrictions reject_unauth_destination check_policy_service inet12700110023 check_policy_service unixprivatepolicy somebody help thanks anyway best regards joão santos greylist programs return defer_if_permit means continue processing see later rule returns either reject permit result idea dont want defer message first delivery attempt rejected second attempt anyway check greylisting program see configured return defer rather defer_if_permit noel jones thu 07 aug 2008 202012 0600 avoiding redundant checks smtpd_recipient_restrictions