diff --git a/install/tpl/debian_postfix.conf.master b/install/tpl/debian_postfix.conf.master
index dce69b097a7b9be2af2058aa25ca3ad59ad0cdde..2de0eb6436bbb4e9986f217b8042f5a30997e16e 100644
--- a/install/tpl/debian_postfix.conf.master
+++ b/install/tpl/debian_postfix.conf.master
@@ -25,7 +25,7 @@ relay_recipient_maps = mysql:{config_dir}/mysql-virtual_relayrecipientmaps.cf
 smtpd_sender_login_maps = proxy:mysql:{config_dir}/mysql-virtual_sender_login_maps.cf
 proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $sender_bcc_maps $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps
 smtpd_helo_required = yes
-smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, check_helo_access regexp:{config_dir}/helo_access, reject_invalid_hostname, reject_non_fqdn_hostname, check_helo_access regexp:{config_dir}/blacklist_helo
+smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, check_helo_access regexp:{config_dir}/helo_access, reject_invalid_hostname, reject_non_fqdn_hostname, reject_invalid_helo_hostname, reject_unknown_helo_hostname, check_helo_access regexp:{config_dir}/blacklist_helo
 smtpd_sender_restrictions = check_sender_access regexp:{config_dir}/tag_as_originating.re {reject_slm}, permit_mynetworks, permit_sasl_authenticated, check_sender_access mysql:{config_dir}/mysql-virtual_sender.cf, check_sender_access regexp:{config_dir}/tag_as_foreign.re
 smtpd_client_restrictions = check_client_access mysql:{config_dir}/mysql-virtual_client.cf
 smtpd_client_message_rate_limit = 100
diff --git a/install/tpl/fedora_postfix.conf.master b/install/tpl/fedora_postfix.conf.master
index 3aa69ae25a2a7a54e95c604691b84eab5cd6bf46..80721dbf45f94a2dc3e0659db30f679307d597ac 100644
--- a/install/tpl/fedora_postfix.conf.master
+++ b/install/tpl/fedora_postfix.conf.master
@@ -22,7 +22,7 @@ relay_recipient_maps = mysql:{config_dir}/mysql-virtual_relayrecipientmaps.cf
 smtpd_sender_login_maps = proxy:mysql:{config_dir}/mysql-virtual_sender_login_maps.cf
 proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $sender_bcc_maps $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps
 smtpd_helo_required = yes
-smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, check_helo_access regexp:{config_dir}/helo_access, reject_invalid_hostname, reject_non_fqdn_hostname, check_helo_access regexp:{config_dir}/blacklist_helo
+smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, check_helo_access regexp:{config_dir}/helo_access, reject_invalid_hostname, reject_non_fqdn_hostname, reject_invalid_helo_hostname, reject_unknown_helo_hostname, check_helo_access regexp:{config_dir}/blacklist_helo
 smtpd_sender_restrictions = check_sender_access regexp:{config_dir}/tag_as_originating.re {reject_slm}, permit_mynetworks, permit_sasl_authenticated, check_sender_access mysql:{config_dir}/mysql-virtual_sender.cf, check_sender_access regexp:{config_dir}/tag_as_foreign.re
 smtpd_client_restrictions = check_client_access mysql:{config_dir}/mysql-virtual_client.cf
 smtpd_client_message_rate_limit = 100
diff --git a/install/tpl/opensuse_postfix.conf.master b/install/tpl/opensuse_postfix.conf.master
index cb021b27e5d5260f4450ec982edf1d56fe3a87a7..7af484ce8566316e712be43ab5f1c617519009b0 100644
--- a/install/tpl/opensuse_postfix.conf.master
+++ b/install/tpl/opensuse_postfix.conf.master
@@ -24,7 +24,7 @@ relay_recipient_maps = mysql:{config_dir}/mysql-virtual_relayrecipientmaps.cf
 smtpd_sender_login_maps = proxy:mysql:{config_dir}/mysql-virtual_sender_login_maps.cf
 proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $sender_bcc_maps $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps
 smtpd_helo_required = yes
-smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, check_helo_access regexp:{config_dir}/helo_access, reject_invalid_hostname, reject_non_fqdn_hostname, check_helo_access regexp:{config_dir}/blacklist_helo
+smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, check_helo_access regexp:{config_dir}/helo_access, reject_invalid_hostname, reject_non_fqdn_hostname, reject_invalid_helo_hostname, reject_unknown_helo_hostname, check_helo_access regexp:{config_dir}/blacklist_helo
 smtpd_sender_restrictions = check_sender_access regexp:{config_dir}/tag_as_originating.re {reject_slm}, permit_mynetworks, permit_sasl_authenticated, check_sender_access mysql:{config_dir}/mysql-virtual_sender.cf, check_sender_access regexp:{config_dir}/tag_as_foreign.re
 smtpd_client_restrictions = check_client_access mysql:{config_dir}/mysql-virtual_client.cf
 smtpd_client_message_rate_limit = 100