diff --git a/target/postfix/main.cf b/target/postfix/main.cf
index e16fbeed..b1b65acf 100644
--- a/target/postfix/main.cf
+++ b/target/postfix/main.cf
@@ -37,10 +37,10 @@ smtpd_tls_exclude_ciphers = aNULL, LOW, EXP, MEDIUM, ADH, AECDH, MD5, DSS, ECDSA
 # Settings to prevent SPAM early
 smtpd_helo_required = yes
 smtpd_delay_reject = yes
-smtpd_helo_restrictions = permit_mynetworks, reject_invalid_hostname, permit
+smtpd_helo_restrictions = permit_mynetworks, reject_invalid_helo_hostname, permit
 smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
 smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination,
-    reject_unauth_pipelining, reject_invalid_hostname, reject_non_fqdn_hostname, reject_unknown_recipient_domain,
+    reject_unauth_pipelining, reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, reject_unknown_recipient_domain,
     reject_rbl_client dnsbl.sorbs.net, reject_rbl_client zen.spamhaus.org, reject_rbl_client bl.spamcop.net
 smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_unauth_pipelining
 smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unknown_sender_domain