diff --git a/postfix_mailq_details/postfix_mailq_details-5.2.2.mkp b/postfix_mailq_details/postfix_mailq_details-5.2.2.mkp
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diff --git a/postfix_mailq_details/postfix_mailq_details-5.3.0.mkp b/postfix_mailq_details/postfix_mailq_details-5.3.0.mkp
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diff --git a/postfix_mailq_details/web/plugins/metrics/postfix_mailq_details.py b/postfix_mailq_details/web/plugins/metrics/postfix_mailq_details.py
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index 00000000..e1c7f537
--- /dev/null
+++ b/postfix_mailq_details/web/plugins/metrics/postfix_mailq_details.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+# -*- encoding: utf-8; py-indent-offset: 4 -*-
+
+#
+# (c) 2024 Heinlein Support GmbH
+#          Robert Sander <r.sander@heinlein-support.de>
+#
+
+# This is free software;  you can redistribute it and/or modify it
+# under the  terms of the  GNU General Public License  as published by
+# the Free Software Foundation in version 2.  This file is distributed
+# in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
+# out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
+# PARTICULAR PURPOSE. See the  GNU General Public License for more de-
+# ails.  You should have  received  a copy of the  GNU  General Public
+# License along with GNU Make; see the file  COPYING.  If  not,  write
+# to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
+# Boston, MA 02110-1301 USA.
+
+check_metrics["check_mk-postfix_mailq_details"] = {
+    "size": {
+        "name": "total_file_size"
+    },
+}