diff --git a/core/postfix/conf/main.cf b/core/postfix/conf/main.cf
index 7f84ade7..99c5179a 100644
--- a/core/postfix/conf/main.cf
+++ b/core/postfix/conf/main.cf
@@ -59,7 +59,7 @@ tls_ssl_options = NO_COMPRESSION, NO_TICKET
 smtp_tls_mandatory_protocols = !SSLv2, !SSLv3
 smtp_tls_protocols =!SSLv2,!SSLv3
 smtp_tls_security_level = {{ OUTBOUND_TLS_LEVEL|default('may') }}
-smtp_tls_policy_maps=hash:/etc/postfix/tls_policy.map
+smtp_tls_policy_maps=lmdb:/etc/postfix/tls_policy.map
 smtp_tls_CApath = /etc/ssl/certs
 smtp_tls_session_cache_database = lmdb:/dev/shm/postfix/smtp_scache
 smtpd_tls_session_cache_database = lmdb:/dev/shm/postfix/smtpd_scache