diff --git a/groups/all.py b/groups/all.py
index f53e9ae..a8e4494 100644
--- a/groups/all.py
+++ b/groups/all.py
@@ -6,6 +6,7 @@ groups['all'] = {
         'apt',
         'cron',
         'hostname',
+        'postfix',
         'sudo',
         'systemd',
         'users',
diff --git a/nodes/htz/ex42-1048908.py b/nodes/htz/ex42-1048908.py
index 4984381..6715b26 100644
--- a/nodes/htz/ex42-1048908.py
+++ b/nodes/htz/ex42-1048908.py
@@ -1,5 +1,6 @@
 nodes['htz.ex42-1048908'] = {
     'bundles': {
+        'dovecot',
         'gitea',
         'jenkins-ci',
         'matrix-synapse',
@@ -8,7 +9,9 @@ nodes['htz.ex42-1048908'] = {
         'mx-puppet-discord',
         'nodejs',
         'php',
+        'postfixadmin',
         'riot-web',
+        'rspamd',
         'postgresql',
         'radicale',
         'travelynx',
@@ -246,6 +249,13 @@ nodes['htz.ex42-1048908'] = {
                 'xml',
             },
         },
+        'postfix': {
+            'myhostname': 'mx0.kunbox.net',
+            'message_size_limit_mb': 50,
+        },
+        'postfixadmin': {
+            'setup_password': vault.decrypt('encrypt$gAAAAABfpwn8NKxTztI39GzhGw66NNsWa72Wq7Sa_LoIG_L0ewCVPzhmw93xhWo3jfT8hCn9sqJgbArmPHtLMcLkSHdBPbQe0bLZMSib-mA9sEQD0wgKMyuRCPHIIMKSAoMaJaYnHSTO-mz1q7_tKzd6LkHF_AGsboS1vpQvg-CDth6e0msTwe8='),
+        },
         'radicale': {
             'users': {
                 'kunsi': vault.decrypt('encrypt$gAAAAABfktUcN5dAS1IP0bQr8Qe54F8UCKLWI3RXscI0xE5he1hx-faiR5grtW4p25mvgxJRw_kDs_dmpahpRztcAjnD8uNEOlFcQefqeVCxyJKsPYiVjN6WsRjAHFd7PoES9gcWln1O'),