diff --git a/smtpd/manifests/init.pp b/smtpd/manifests/init.pp
index c03b6dc..38f4eae 100644
--- a/smtpd/manifests/init.pp
+++ b/smtpd/manifests/init.pp
@@ -41,7 +41,7 @@ class smtpd(
   $mailserver=undef,
   $listen=false,
   $gecos=true,
-  $maildir="Mail",
+  $maildir='Mail',
   $config=undef,
   $custom=undef,
   $domains=undef,
@@ -50,20 +50,20 @@ class smtpd(
   $ssl_cert="${::puppet_ssldir}/certs/${::homename}.pem"
 ) {
 
-  if $listen == true and $::operatingsystem != "OpenBSD" {
-    fail("listen only supported on OpenBSD")
+  if $listen == true and $::operatingsystem != 'OpenBSD' {
+    fail('listen only supported on OpenBSD')
   }
 
   case $::operatingsystem {
-    "centos","redhat": {
-      if versioncmp($::operatingsystemrelease, "6") < 0 {
+    'centos','redhat': {
+      if versioncmp($::operatingsystemrelease, '6') < 0 {
         fail("smtpd requires atleast ${::operatingsystem} 6")
       }
 
-      $package = "opensmtpd"
-      $service = "opensmtpd"
-      $confdir = "/etc/opensmtpd"
-      $aliases = "/etc/aliases"
+      $package = 'opensmtpd'
+      $service = 'opensmtpd'
+      $confdir = '/etc/opensmtpd'
+      $aliases = '/etc/aliases'
       $mda = undef
 
       package { $package:
@@ -71,27 +71,27 @@ class smtpd(
         before => File["${confdir}/smtpd.conf"],
       }
 
-      exec { "/usr/sbin/alternatives --set mta /usr/sbin/sendmail.opensmtpd":
+      exec { '/usr/sbin/alternatives --set mta /usr/sbin/sendmail.opensmtpd':
         refreshonly => true,
         subscribe   => Package[$package],
         before      => Service[$service],
       }
 
-      service { [ "postfix", "sendmail" ]:
+      service { [ 'postfix', 'sendmail' ]:
         ensure => stopped,
         enable => false,
         before => Service[$service],
       }
     }
-    "ubuntu": {
-      if versioncmp($::operatingsystemrelease, "14.04") < 0 {
+    'ubuntu': {
+      if versioncmp($::operatingsystemrelease, '14.04') < 0 {
         fail("smtpd requires atleast ${::operatingsystem} 14.04")
       }
 
-      $package = "opensmtpd"
-      $service = "opensmtpd"
-      $confdir = "/etc"
-      $aliases = "/etc/aliases"
+      $package = 'opensmtpd'
+      $service = 'opensmtpd'
+      $confdir = '/etc'
+      $aliases = '/etc/aliases'
       $mda = undef
 
       package { $package:
@@ -99,23 +99,23 @@ class smtpd(
         before => File["${confdir}/smtpd.conf"],
       }
     }
-    "openbsd": {
+    'openbsd': {
       $package = undef
-      $service = "smtpd"
-      $confdir = "/etc/mail"
-      $aliases = "/etc/mail/aliases"
-      $mda = "/usr/local/bin/procmail -Y -t -f %{sender}"
+      $service = 'smtpd'
+      $confdir = '/etc/mail'
+      $aliases = '/etc/mail/aliases'
+      $mda = '/usr/local/bin/procmail -Y -t -f %{sender}'
 
-      file { "/etc/mailer.conf":
+      file { '/etc/mailer.conf':
         ensure => present,
-        mode   => "0644",
-        owner  => "root",
-        group  => "wheel",
-        source => "puppet:///modules/smtpd/mailer.conf",
+        mode   => '0644',
+        owner  => 'root',
+        group  => 'wheel',
+        source => 'puppet:///modules/smtpd/mailer.conf',
         before => Service[$service],
       }
 
-      service { "sendmail":
+      service { 'sendmail':
         ensure => stopped,
         enable => false,
         before => Service[$service],
@@ -138,18 +138,18 @@ class smtpd(
     $content = undef
   } else {
     $content = $listen ? {
-      true    => template("smtpd/server.conf.erb"),
-      default => template("smtpd/client.conf.erb"),
+      true    => template('smtpd/server.conf.erb'),
+      default => template('smtpd/client.conf.erb'),
     }
   }
 
   file { "${confdir}/smtpd.conf":
     ensure  => present,
-    mode    => "0644",
-    owner   => "root",
+    mode    => '0644',
+    owner   => 'root',
     group   => $::operatingsystem ? {
-      "openbsd" => "wheel",
-      default   => "root",
+      'openbsd' => 'wheel',
+      default   => 'root',
     },
     source  => $config,
     content => $content,
@@ -160,7 +160,7 @@ class smtpd(
     ensure => running,
     enable => true,
     start  => $::operatingsystem ? {
-      "openbsd" => "/usr/sbin/smtpd",
+      'openbsd' => '/usr/sbin/smtpd',
       default   => undef,
     },
   }
@@ -168,91 +168,91 @@ class smtpd(
   if $listen == true or $config {
     file { "${ssl::private}/smtpd.key":
       ensure => present,
-      mode   => "0600",
-      owner  => "root",
-      group  => "wheel",
+      mode   => '0600',
+      owner  => 'root',
+      group  => 'wheel',
       source => $ssl_key,
-      notify => Service["smtpd"],
+      notify => Service['smtpd'],
     }
     file { "${ssl::certs}/smtpd.crt":
       ensure => present,
-      mode   => "0644",
-      owner  => "root",
-      group  => "wheel",
+      mode   => '0644',
+      owner  => 'root',
+      group  => 'wheel',
       source => $ssl_cert,
-      notify => Service["smtpd"],
+      notify => Service['smtpd'],
     }
   }
 
   if $listen == true {
     include procmail
 
-    procmail::rc { "00-default.rc":
+    procmail::rc { '00-default.rc':
       content => "MAILDIR=\$HOME/${maildir}\nDEFAULT=\$MAILDIR/INBOX\n",
     }
 
     file { [ "/root/${maildir}", "/etc/skel/${maildir}" ]:
       ensure => directory,
-      mode   => "0700",
-      owner  => "root",
-      group  => "wheel",
-      before => Service["smtpd"],
+      mode   => '0700',
+      owner  => 'root',
+      group  => 'wheel',
+      before => Service['smtpd'],
     }
 
     if $gecos == true {
-      file { "/usr/local/sbin/generate-smtpd-gecos.sh":
+      file { '/usr/local/sbin/generate-smtpd-gecos.sh':
         ensure => present,
-        mode   => "0700",
-        owner  => "root",
-        group  => "wheel",
-        source => "puppet:///modules/smtpd/generate-smtpd-gecos.sh",
+        mode   => '0700',
+        owner  => 'root',
+        group  => 'wheel',
+        source => 'puppet:///modules/smtpd/generate-smtpd-gecos.sh',
       }
-      exec { "/usr/local/sbin/generate-smtpd-gecos.sh":
-        unless  => "/bin/test /etc/mail/gecos -nt /etc/passwd",
-        require => File["/usr/local/sbin/generate-smtpd-gecos.sh"],
-        notify  => Exec["makemap aliases"],
+      exec { '/usr/local/sbin/generate-smtpd-gecos.sh':
+        unless  => '/bin/test /etc/mail/gecos -nt /etc/passwd',
+        require => File['/usr/local/sbin/generate-smtpd-gecos.sh'],
+        notify  => Exec['makemap aliases'],
       }
     }
 
-    file { "/etc/mail/aliases":
+    file { '/etc/mail/aliases':
       ensure => present,
-      mode   => "0644",
-      owner  => "root",
-      group  => "wheel",
+      mode   => '0644',
+      owner  => 'root',
+      group  => 'wheel',
       source => [
         "puppet:///files/mail/aliases.${::homename}",
-        "puppet:///files/mail/aliases",
+        'puppet:///files/mail/aliases',
       ],
     }
-    exec { "makemap aliases":
+    exec { 'makemap aliases':
       command     => $gecos ? {
-        false => "makemap aliases",
-        true  => "cat aliases gecos > aliases.gecos && makemap -o aliases.db aliases.gecos",
+        false => 'makemap aliases',
+        true  => 'cat aliases gecos > aliases.gecos && makemap -o aliases.db aliases.gecos',
       },
       refreshonly => true,
-      cwd         => "/etc/mail",
-      path        => "/bin:/usr/bin:/sbin:/usr/sbin",
-      subscribe   => File["/etc/mail/aliases"],
-      before      => Service["smtpd"],
+      cwd         => '/etc/mail',
+      path        => '/bin:/usr/bin:/sbin:/usr/sbin',
+      subscribe   => File['/etc/mail/aliases'],
+      before      => Service['smtpd'],
     }
 
-    file { "/etc/mail/clients":
+    file { '/etc/mail/clients':
       ensure => present,
-      mode   => "0644",
-      owner  => "root",
-      group  => "wheel",
+      mode   => '0644',
+      owner  => 'root',
+      group  => 'wheel',
       source => [
         "puppet:///files/mail/clients.${::homename}",
-        "puppet:///files/mail/clients",
-        "puppet:///modules/smtpd/empty",
+        'puppet:///files/mail/clients',
+        'puppet:///modules/smtpd/empty',
       ],
     }
-    exec { "makemap -t set clients":
+    exec { 'makemap -t set clients':
       refreshonly => true,
-      cwd         => "/etc/mail",
-      path        => "/bin:/usr/bin:/sbin:/usr/sbin",
-      subscribe   => File["/etc/mail/clients"],
-      before      => Service["smtpd"],
+      cwd         => '/etc/mail',
+      path        => '/bin:/usr/bin:/sbin:/usr/sbin',
+      subscribe   => File['/etc/mail/clients'],
+      before      => Service['smtpd'],
     }
 
     if $domains {
@@ -260,7 +260,7 @@ class smtpd(
         gecos     => $gecos,
         subscribe => $gecos ? {
           false => undef,
-          true  => Exec["/usr/local/sbin/generate-smtpd-gecos.sh"],
+          true  => Exec['/usr/local/sbin/generate-smtpd-gecos.sh'],
         },
       }
     }
@@ -279,13 +279,13 @@ define smtpd::aliases($gecos) {
 
   file { "/etc/mail/aliases.${name}":
     ensure => present,
-    mode   => "0644",
-    owner  => "root",
-    group  => "wheel",
+    mode   => '0644',
+    owner  => 'root',
+    group  => 'wheel',
     source => [
       "puppet:///files/mail/aliases.${name}",
       "puppet:///files/mail/aliases.${::homename}",
-      "puppet:///files/mail/aliases",
+      'puppet:///files/mail/aliases',
     ],
   }
   exec { "makemap aliases.${name}":
@@ -294,10 +294,10 @@ define smtpd::aliases($gecos) {
       true  => "cat aliases.${name} gecos > aliases.${name}.gecos && makemap -o aliases.${name}.db aliases.${name}.gecos",
     },
     refreshonly => true,
-    cwd         => "/etc/mail",
-    path        => "/bin:/usr/bin:/sbin:/usr/sbin",
+    cwd         => '/etc/mail',
+    path        => '/bin:/usr/bin:/sbin:/usr/sbin',
     subscribe   => File["/etc/mail/aliases.${name}"],
-    before      => Service["smtpd"],
+    before      => Service['smtpd'],
   }
 
 }
@@ -309,21 +309,21 @@ define smtpd::virtual() {
 
   file { "/etc/mail/virtual.${name}":
     ensure => present,
-    mode   => "0644",
-    owner  => "root",
-    group  => "wheel",
+    mode   => '0644',
+    owner  => 'root',
+    group  => 'wheel',
     source => [
       "puppet:///files/mail/virtual.${name}",
       "puppet:///files/mail/virtual.${::homename}",
-      "puppet:///files/mail/virtual",
+      'puppet:///files/mail/virtual',
     ],
   }
   exec { "makemap virtual.${name}":
     refreshonly => true,
-    cwd         => "/etc/mail",
-    path        => "/bin:/usr/bin:/sbin:/usr/sbin",
+    cwd         => '/etc/mail',
+    path        => '/bin:/usr/bin:/sbin:/usr/sbin',
     subscribe   => File["/etc/mail/virtual.${name}"],
-    before      => Service["smtpd"],
+    before      => Service['smtpd'],
   }
 
 }