diff --git a/roles/postfix/files/main.cf b/roles/postfix/files/main.cf
index bc0c621..e21954e 100644
--- a/roles/postfix/files/main.cf
+++ b/roles/postfix/files/main.cf
@@ -70,7 +70,7 @@ smtpd_sasl_path = inet:localhost:26
 # DKIM
 milter_default_action = accept
 milter_protocol = 2
-smtpd_milters = inet:localhost:8891
+smtpd_milters = inet:localhost:8891,inet:localhost:8892
 non_smtpd_milters = $smtpd_milters
 
 compatibility_level = 2