diff --git a/tasks/main.yml b/tasks/main.yml
index 0333443..894c648 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -50,6 +50,16 @@
       - 143:143
       - 2000:2000
     env:
+      SUBMISSION_ENABLE: "yes"
+      SUBMISSION_RELAY_HOST: postfix
+      SUBMISSION_RELAY_PORT: "25"
+      SUBMISSION_RELAY_TRUSTED: "yes"
+      # SUBMISSION_RELAY_USER:
+      # SUBMISSION_RELAY_MASTER_USER:
+      # SUBMISSION_RELAY_PASSWORD:
+      # SUBMISSION_RELAY_SSL: starttls
+      # SUBMISSION_RELAY_SSL_VERIFY: "no"
+      # SUBMISSION_RELAY_RAWLOG_DIR:
   register: container
 
 - name: Leer info de volumen {{ dovecot_volume_config }}