diff --git a/config/service/postfix/container/config/master.cf b/config/service/postfix/container/config/master.cf
index 43e19a0..8c419dd 100644
--- a/config/service/postfix/container/config/master.cf
+++ b/config/service/postfix/container/config/master.cf
@@ -6,8 +6,8 @@
 #                (yes)   (yes)   (no)    (never) (100)
 # ==========================================================================
 smtp       inet  n       -       n       -       -       smtpd
-smtps      inet  n       -       n       -       -       smtpd
-submission inet  n       -       n       -       -       smtpd
+smtps      inet  n       -       n       -       -       smtpd -o smtpd_tls_wrappermode=yes
+submission inet  n       -       n       -       -       smtpd -o smtpd_tls_security_level=encrypt
 pickup     unix  n       -       n       60      1       pickup
 cleanup    unix  n       -       n       -       0       cleanup
 qmgr       unix  n       -       n       300     1       qmgr