--- postfix_message_size_limit: 10240000 postfix_mailbox_size_limit: 51200000 postfix_smtpd_relay_restrictions: - permit_mynetworks - permit_sasl_authenticated - defer_unauth_destination - reject_unknown_recipient_domain - reject_unverified_recipient postfix_smtpd_recipient_restrictions: - permit_mynetworks - reject_unauth_destination postfix_smtpd_sender_restrictions: - permit_mynetworks - $_initial_sender_restrictions - permit_sasl_authenticated - reject_unknown_sender_domain - reject_unknown_reverse_client_hostname - reject_unknown_client_hostname - reject_unknown_reverse_client_hostname postfix_smtpd_helo_required: "yes" postfix_smtpd_helo_restrictions: - permit_mynetworks - permit_sasl_authenticated - reject_invalid_helo_hostname - reject_non_fqdn_helo_hostname - reject_unknown_helo_hostname postfix_smtpd_client_restrictions: - reject_unauth_pipelining - permit_mynetworks - reject_non_fqdn_sender - reject_unknown_sender_domain - permit postfix_non_smtpd_milters: [] postfix_smtpd_milters: [] postfix_spamassassin_milter: "unix:/spamass/spamass.sock" postfix_opendkim_milter: "unix:/opendkim/opendkim.sock" postfix_header_checks: [] postfix_body_checks: [] postfix_smtpd_sender_login_maps: [] postfix_always_add_missing_headers: no postfix_local_header_rewrite_clients: - permit_inet_interfaces