diff --git a/metadata.rb b/metadata.rb
index a9eb751..2b449c4 100644
--- a/metadata.rb
+++ b/metadata.rb
@@ -6,7 +6,7 @@ version           "0.8.4"
 recipe            "postfix", "Installs and configures postfix"
 recipe            "postfix::sasl_auth", "Set up postfix to auth to a server with sasl"
 
-%w{ubuntu debian}.each do |os|
+%w{ubuntu debian redhat centos}.each do |os|
   supports os
 end
 
diff --git a/recipes/default.rb b/recipes/default.rb
index 5c97fe5..6d88b45 100644
--- a/recipes/default.rb
+++ b/recipes/default.rb
@@ -22,8 +22,24 @@ package "postfix" do
   action :install
 end
 
-service "postfix" do
-  action :enable
+case node[:platform]
+when "ubuntu", "debian" 
+  service "postfix" do
+   action :enable
+  end
+when "redhat", "centos"
+  service "postfix" do
+    action :nothing
+  end
+  service "sendmail" do
+    action :nothing
+  end
+  execute "switch_mailer_to_postfix" do
+    command "/usr/sbin/alternatives --set mta /usr/sbin/sendmail.postfix"
+    notifies :stop, resources(:service => "sendmail")
+    notifies :start, resources(:service => "postfix")
+    not_if "/usr/bin/test /etc/alternatives/mta -ef /usr/sbin/sendmail.postfix"
+  end
 end
 
 %w{main master}.each do |cfg|