diff --git a/README.md b/README.md
index 952e5cd..fc0d7aa 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ node 'example.example.net' {
 
 - through Foreman:
 
-In order to apply parameters through Foreman, **__confdroid_fail2ban::params__** must be added to the host or host group in question.
+In order to apply parameters through Foreman, **confdroid_fail2ban::params** must be added to the host or host group in question.
 
 See [more details about class deployment on Confdroid.com](https://confdroid.com/2017/05/deploying-our-puppet-modules/).
 
diff --git a/manifests/params.pp b/manifests/params.pp
index a6a0556..012ae00 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -123,7 +123,7 @@ class confdroid_fail2ban::params (
 
 # jail.conf/local
   String $fn_ignoreip                 = '127.0.0.1/8',
-  Optional[String] $fn_ignorecommand  = '',
+  Optional[String] $fn_ignorecommand  = undef,
   String $fn_bantime                  = '600',
   String $fn_findtime                 = '600',
   String $fn_maxretry                 = '5',
@@ -133,6 +133,7 @@ class confdroid_fail2ban::params (
   Boolean $fn_enabled                 = false,
   String $fn_filter                   = '%(__name__)s',
   String $fn_destemail                = 'root@localhost',
+  #String $fn_sender                   = "fail2ban@${fqdn}",
   String $fn_mta                      = 'sendmail',
   String $fn_protocol                 = 'tcp',
   String $fn_chain                    = 'INPUT',
@@ -143,7 +144,7 @@ class confdroid_fail2ban::params (
   String $fn_action_                  = '%(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]',
   String $fn_action_mw                = '%(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
                         %(mta)s-whois[name=%(__name__)s,  sender="%(sender)s", dest="%(destemail)s", protocol="%(protocol)s", chain="%(chain)s"]',
-  String $fn_action_mwl               = '%(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]'
+  String $fn_action_mwl               = '%(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
                         %(mta)s-whois-lines[name=%(__name__)s, sender="%(sender)s", dest="%(destemail)s", logpath=%(logpath)s, chain="%(chain)s"]',
   String $fn_action_xarf              = '%(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
                         xarf-login-attack[service=%(__name__)s, sender="%(sender)s", logpath=%(logpath)s, port="%(port)s"]',