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# Begin antispam section

smtpd_helo_required = yes
disable_vrfy_command = yes

maps_rbl_domains = dnsbl.sorbs.net
smtpd_client_restrictions = reject_maps_rbl

smtpd_recipient_restrictions =
    reject_rbl_client dnsbl.sorbs.net,
    reject_invalid_hostname,
    reject_non_fqdn_hostname,
    reject_non_fqdn_sender,
    reject_non_fqdn_recipient,
    reject_unknown_sender_domain,
    reject_unknown_recipient_domain,
    permit_mynetworks,
    reject_unauth_destination,
    check_policy_service inet:127.0.0.1:60000,
    check_recipient_access pcre:/etc/postfix/recipient_checks.pcre,
    check_helo_access hash:/etc/postfix/helo_checks,
    check_sender_access hash:/etc/postfix/sender_checks,
    check_client_access hash:/etc/postfix/client_checks,
    check_client_access pcre:/etc/postfix/client_checks.pcre,
    reject_rbl_client relays.ordb.org,
    reject_rbl_client opm.blitzed.org,
    reject_rbl_client list.dsbl.org,
    reject_rbl_client sbl-xbl.spamhaus.org,
    reject_rbl_client cbl.abuseat.org,
    reject_rhsbl_sender dsn.rfc-ignorant.org
    permit
smtpd_data_restrictions =
    reject_unauth_pipelining,
    permit

# End antispam section
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