diff --git a/docker/postfix/etc/postfix/sasl/smtpd.conf b/docker/postfix/etc/postfix/sasl/smtpd.conf
index 18d730882b66f8011430d4890882b5a017a504f5..194e52d92d252672a5929109e6dc8ecb0f923756 100644
--- a/docker/postfix/etc/postfix/sasl/smtpd.conf
+++ b/docker/postfix/etc/postfix/sasl/smtpd.conf
@@ -1,2 +1,3 @@
 pwcheck_method: saslauthd
 mech_list: plain login
+saslauthd_path: /var/spool/postfix/var/run/saslauthd/mux