diff --git a/attributes/postfix.rb b/attributes/postfix.rb
index 784bf9e..d9ff0e3 100644
--- a/attributes/postfix.rb
+++ b/attributes/postfix.rb
@@ -1,19 +1,17 @@
-postfix Mash.new unless attribute?("postfix")
+default[:postfix][:mail_type]  = "client"
+default[:postfix][:myhostname] = fqdn
+default[:postfix][:mydomain]   = domain
+default[:postfix][:myorigin]   = "$myhostname"
+default[:postfix][:relayhost]  = ""
+default[:postfix][:mail_relay_networks] = "127.0.0.0/8"
 
-postfix[:mail_type] = "client" unless postfix.has_key?(:mail_type)
-postfix[:myhostname] = fqdn unless postfix.has_key?(:myhostname)
-postfix[:mydomain] = domain unless postfix.has_key?(:mydomain)
-postfix[:myorigin] = "$myhostname" unless postfix.has_key?(:myorigin)
-postfix[:relayhost] = "" unless postfix.has_key?(:relayhost)
-postfix[:mail_relay_networks] = "127.0.0.0/8" unless postfix.has_key?(:mail_relay_networks)
-
-postfix[:smtp_sasl_auth_enable] = "no" unless postfix.has_key?(:smtp_sasl_auth_enable)
+default[:postfix][:smtp_sasl_auth_enable] = "no"
 
 if postfix[:smtp_sasl_auth_enable] == "yes"
-  postfix[:smtp_sasl_password_maps] = "hash:/etc/postfix/sasl_passwd"
-  postfix[:smtp_sasl_security_options] = "noanonymous"
-  postfix[:smtp_tls_cafile] = "/etc/postfix/cacert.pem"
-  postfix[:smtp_use_tls] = "yes"
-  postfix[:smtp_sasl_user_name] = "" unless postfix.has_key?(:smtp_sasl_user_name)
-  postfix[:smtp_sasl_passwd] = "" unless postfix.has_key?(:smtp_sasl_passwd)
+  default[:postfix][:smtp_sasl_password_maps]    = "hash:/etc/postfix/sasl_passwd"
+  default[:postfix][:smtp_sasl_security_options] = "noanonymous"
+  default[:postfix][:smtp_tls_cafile] = "/etc/postfix/cacert.pem"
+  default[:postfix][:smtp_use_tls]    = "yes"
+  default[:postfix][:smtp_sasl_user_name] = ""
+  default[:postfix][:smtp_sasl_passwd]    = ""
 end