diff --git a/share/wildduck/zonemta.tf b/share/wildduck/zonemta.tf
index d355774..fe8e4e8 100644
--- a/share/wildduck/zonemta.tf
+++ b/share/wildduck/zonemta.tf
@@ -140,7 +140,7 @@ resource "kubernetes_config_map_v1" "zonemta_config" {
         algo="md5"
       wildduck.toml: |-
         ["modules/zonemta-wildduck"]
-        enabled=["receiver", "sender"]
+        enabled=["receiver", "sender", "dkim"]
         # to which SMTP interfaces this plugin applies to. Use "*" for all interfaces
         interfaces=["feeder"]
         # optional hostname to be used in headers
@@ -168,7 +168,7 @@ resource "kubernetes_config_map_v1" "zonemta_config" {
             cipher="aes192"
             secret="${local.secrets.dkim}"
             useOpenSSL=true
-            signTransportDomain=true
+            signTransportDomain=false
             hashAlgo="sha256"
   EOF
   )