diff --git a/check_mailstat.cfg b/check_mailstat.cfg
new file mode 100644
index 0000000..e2d9b7e
--- /dev/null
+++ b/check_mailstat.cfg
@@ -0,0 +1,9 @@
+# the following check requires an additional command option 
+# for the running mailgraph process:
+#  -s /var/log/mailgraph/mailgraph.stats
+# Please make sure that the file and a file with the 
+# same name but ending .old exist and are writable by 
+# the user executing the check below. Example:
+#   touch /var/log/mailgraph/mailgraph.stats{,old}
+#   chown nagios: /var/log/mailgraph/mailgraph.stats{,old}
+command[check_mailstat]=/usr/lib/nagios/plugins/check_mailstat -w 1000:0:0:0:0:10 -c 2000:0:0:0:0:30 -s /var/log/mailgraph/mailgraph.statsi
diff --git a/monitoring-plugins-mailstat.changes b/monitoring-plugins-mailstat.changes
index f8b73a0..24db028 100644
--- a/monitoring-plugins-mailstat.changes
+++ b/monitoring-plugins-mailstat.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sun Jun 21 09:51:12 UTC 2020 - lars@linux-schulserver.de - 0.9.1
+
+- require perl(RRDs) for the images and mailgraph for the stats
+- add an example check_mailstat.cfg NRPE definition
+
 -------------------------------------------------------------------
 Wed Jul 30 19:17:09 UTC 2014 - lars@linux-schulserver.de
 
diff --git a/monitoring-plugins-mailstat.spec b/monitoring-plugins-mailstat.spec
index c4c45e3..deec607 100644
--- a/monitoring-plugins-mailstat.spec
+++ b/monitoring-plugins-mailstat.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package monitoring-plugins-mailstat
 #
-# Copyright (c) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -12,19 +12,20 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
+# Please submit bugfixes or comments via https://bugs.opensuse.org/
 #
 
 
 Name:           monitoring-plugins-mailstat
 Version:        0.9.1
-Release:        100
+Release:        0
 Summary:        Monitoring mail server statistics
-License:        GPL-3.0+
+License:        GPL-3.0-or-later
 Group:          System/Monitoring
-Url:            http://linuxplayer.org/2010/12/check_mailstat-pl-a-nagios-plugin-for-monitoring-mail-server-statistics
+URL:            http://linuxplayer.org/2010/12/check_mailstat-pl-a-nagios-plugin-for-monitoring-mail-server-statistics
 Source0:        check_mailstat_plugin_v%{version}.zip
 Source1:        monitoring-plugins-mailstat-rpmlintrc
+Source2:        check_mailstat.cfg
 # PATCH-FIX-UPSTREAM -- allow to configure the path name of the statistics file via -s option
 Patch1:         check_mailstat_plugin_v0.9.1-stat_file.patch
 # PATCH-FIX-UPSTREAM -- write out the initial values if there is no old file instead of all zero (confuses people)
@@ -35,6 +36,8 @@ Recommends:     perl
 %endif
 BuildRequires:  nagios-rpm-macros
 BuildRequires:  unzip
+Requires:       mailgraph
+Requires:       perl(RRDs)
 Provides:       nagios-plugins-mailstat = %{version}-%{release}
 Obsoletes:      nagios-plugins-mailstat < %{version}-%{release}
 Requires:       monitoring-plugins-common
@@ -60,6 +63,7 @@ sed -i "s|
||g" README.txt
 install -D -m755 check_mailstat.pl %{buildroot}/%{nagios_plugindir}/check_mailstat
 ln -s %{nagios_plugindir}/check_mailstat %{buildroot}/%{nagios_plugindir}/check_mailstat.pl
 install -D -m644 extra/check_mailstat.php %{buildroot}/%{pnp4nagios_templatedir}/check_mailstat.php
+install -D -m644 %{SOURCE2} %{buildroot}%{nrpe_sysconfdir}/check_mailstat.cfg
 
 %clean
 rm -rf %{buildroot}
@@ -70,9 +74,11 @@ rm -rf %{buildroot}
 # avoid build dependecy of nagios - own the dirs
 %dir %{nagios_libdir}
 %dir %{nagios_plugindir}
+%dir %{nrpe_sysconfdir}
 %{nagios_plugindir}/check_mailstat*
 %dir %{pnp4nagios_datarootdir}
 %dir %{pnp4nagios_templatedir}
 %config(noreplace) %{pnp4nagios_templatedir}/check_mailstat.php
+%config(noreplace) %{nrpe_sysconfdir}/check_mailstat.cfg
 
 %changelog