Hi,
We can configure these in main.cf smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination,check_poli cy_service unix:private/policyd-spf,reject_invalid_hostname,reject_unauth_pipelining,reject_non_fqdn_sender,reject_unknown_sender_domain,reject_non_fqdn_recipient,reject_unknown_recipient_domain,reject_unauth_pipelining,ch eck_recipient_access hash:/etc/postfix/recipient_access And can overwrite parameters=value in master.cf like; below smtp...smtpd/postscreen or sub..mi.ssion...smtpd -o smtpd_recipient_restrictions=reject_non_fqdn_recipient,reject_unknown_recipient_domain,permit_sasl_authenticated,reject which has priority setting? Thanks.