# basic configuration (myorigin, mydomain, etc.)

smtpd_helo_required = yes

smtpd_client_restrictions = check_client_access hash:/etc/postfix/blackwhitelists/whitelisted_client_addresses,
    check_reverse_client_hostname_access hash:/etc/postfix/blackwhitelists/blacklisted_reverse_hostnames,
    reject_rbl_client zen.spamhaus.org, reject_rbl_client bl.spamcop.net,
    reject_rbl_client dnsbl.sorbs.net, reject_unknown_client

smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks,
    reject_non_fqdn_helo_hostname, reject_invalid_helo_hostname,
    reject_unknown_helo_hostname, reject_unauth_pipelining

smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks,
    check_sender_access hash:/etc/postfix/blackwhitelists/blacklisted_sender_addresses

smtpd_relay_restrictions = permit_sasl_authenticated, permit_mynetworks,
    reject_unauth_destination

smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks,
    reject_unauth_destination, reject_unauth_pipelining,
    check_sender_access hash:/etc/postfix/blackwhitelists/whitelisted_sender_addresses, reject_non_fqdn_sender,
    reject_unknown_sender_domain, check_policy_service unix:private/policyd-spf,
    check_policy_service unix:/var/spool/postfix/postgrey/socket

smtpd_etrn_restrictions = permit_sasl_authenticated, permit_mynetworks, reject

# more basic configuration