diff --git a/roles/base/files/postfix/main.cf/main.cf.gateway b/roles/base/files/postfix/main.cf/main.cf.gateway
index daf6d5bf18..98740e791c 100644
--- a/roles/base/files/postfix/main.cf/main.cf.gateway
+++ b/roles/base/files/postfix/main.cf/main.cf.gateway
@@ -741,3 +741,6 @@ smtp_tls_loglevel = 1
 smtp_tls_cert_file = /etc/pki/tls/certs/gateway.crt
 smtp_tls_key_file = /etc/pki/tls/private/gateway.key
 smtp_tls_CAfile  = /etc/pki/tls/certs/ca-bundle.crt
+
+smtpd_milters           = inet:localhost:8891
+milter_default_action   = accept