diff --git a/images/postfix/config/main.cf b/images/postfix/config/main.cf
index 07bfbf2d8b503a63e5b0ae51adbfa53254728b4a..d827423b390a30ede2497455fde6c9c5252e97b8 100644
--- a/images/postfix/config/main.cf
+++ b/images/postfix/config/main.cf
@@ -79,6 +79,7 @@ smtpd_sasl_security_options = noanonymous, noplaintext
 smtpd_sasl_tls_security_options = noanonymous
 smtpd_tls_auth_only = yes
 
+lmtp_host_lookup = dns, native
 virtual_transport = lmtp:inet:dovecot-internal:24
 
 ########