diff --git a/deploy/ansible/playbooks/deploy-c3lf-sys3.yml b/deploy/ansible/playbooks/deploy-c3lf-sys3.yml
index 544b4e4..4005146 100644
--- a/deploy/ansible/playbooks/deploy-c3lf-sys3.yml
+++ b/deploy/ansible/playbooks/deploy-c3lf-sys3.yml
@@ -345,6 +345,13 @@
       notify:
         - restart postfix
 
+    - name: configure rspamd dkim
+      template:
+        src: templates/rspamd-dkim.cf.j2
+        dest: /etc/rspamd/local.d/dkim_signing.conf
+      notify:
+        - restart rspamd
+
     - name: configure rspamd
       copy:
         content: |
diff --git a/deploy/ansible/playbooks/templates/postfix.cf.j2 b/deploy/ansible/playbooks/templates/postfix.cf.j2
index f80d69b..ee073d6 100644
--- a/deploy/ansible/playbooks/templates/postfix.cf.j2
+++ b/deploy/ansible/playbooks/templates/postfix.cf.j2
@@ -37,7 +37,6 @@ alias_maps = hash:/etc/aliases
 alias_database = hash:/etc/aliases
 myorigin = /etc/mailname
 mydestination = $myhostname, , localhost
-relayhost = firefly.lab.or.it
 mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
 mailbox_size_limit = 0
 recipient_delimiter = +