diff --git a/data/templates/postfix/main.cf b/data/templates/postfix/main.cf
index 43151e672..4d27498c4 100644
--- a/data/templates/postfix/main.cf
+++ b/data/templates/postfix/main.cf
@@ -52,7 +52,7 @@ smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
 smtpd_tls_loglevel=1
 
 # -- TLS for outgoing connections
-{% if smtp_relayhost %}
+{% if relay_host != "" %}
 smtp_tls_security_level = encrypt
 {% else %}
 # Use TLS if this is supported by the remote SMTP server, otherwise use plaintext.