diff --git a/README.md b/README.md
index e4be15b..51a277c 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,18 @@ This change in namespace to `node['postfix']['main']` should allow for greater f
   - `node['postfix']['main']['relayhost']` - Set to empty string
   - `node['postfix']['sasl']['smtp_sasl_user_name']` - SASL user to authenticate as.  Default empty
   - `node['postfix']['sasl']['smtp_sasl_passwd']` - SASL password to use.  Default empty.
+* `node['postfix']['sender_canonical_map_entries']` - (hash with key value pairs); default not configured.  Setup generic canonical maps. See `man 5 canonical`. If has at least one value, then will be enabled in config.
+* `node['postfix']['smtp_generic_map_entries']` - (hash with key value pairs); default not configured.  Setup generic postfix maps. See `man 5 generic`. If has at least one value, then will be enabled in config.
+
+Example of json role config, for setup *_map_entries:
+
+`postfix : {`
+
+`...`
+
+`"smtp_generic_map_entries" : { "root@youinternaldomain.local" : "admin@example.com", "admin@youinternaldomain.local" : "admin@example.com" }`
+
+`}`
 
 ### master.cf template attributes
 * `node['postfix']['master']['submission'] - Whether to use submission (TCP 587) daemon. (true/false); default false
diff --git a/attributes/default.rb b/attributes/default.rb
index b054420..e575c61 100644
--- a/attributes/default.rb
+++ b/attributes/default.rb
@@ -24,6 +24,7 @@ default['postfix']['aliases'] = {}
 default['postfix']['main_template_source'] = 'postfix'
 default['postfix']['master_template_source'] = 'postfix'
 default['postfix']['sender_canonical_map_entries'] = {}
+default['postfix']['smtp_generic_map_entries'] = {}
 
 case node['platform']
 when 'smartos'
diff --git a/recipes/default.rb b/recipes/default.rb
index 07fdf8d..b6e058d 100644
--- a/recipes/default.rb
+++ b/recipes/default.rb
@@ -89,7 +89,26 @@ unless node['postfix']['sender_canonical_map_entries'].empty?
   end
 end
 
-%w(main master).each do |cfg|
+execute 'update-postfix-smtp_generic' do
+  command "postmap #{node['postfix']['conf_dir']}/smtp_generic"
+  action :nothing
+end
+
+if !node['postfix']['smtp_generic_map_entries'].empty?
+  template "#{node['postfix']['conf_dir']}/smtp_generic" do
+    owner 'root'
+    group 0
+    mode  '0644'
+    notifies :run, 'execute[update-postfix-smtp_generic]'
+    notifies :reload, 'service[postfix]'
+  end
+
+  if !node['postfix']['main'].key?('smtp_generic_maps')
+    node.set['postfix']['main']['smtp_generic_maps'] = "hash:#{node['postfix']['conf_dir']}/smtp_generic"
+  end
+end
+
+%w{main master}.each do |cfg|
   template "#{node['postfix']['conf_dir']}/#{cfg}.cf" do
     source "#{cfg}.cf.erb"
     owner 'root'
diff --git a/templates/default/smtp_generic.erb b/templates/default/smtp_generic.erb
new file mode 100644
index 0000000..7aa5d64
--- /dev/null
+++ b/templates/default/smtp_generic.erb
@@ -0,0 +1,10 @@
+#
+# This file is generated by Chef for <%= node['fqdn'] %>
+#
+# Local changes will be overwritten
+#
+# See man 5 generic for format
+
+<% node['postfix']['smtp_generic_map_entries'].each do |name, value| %>
+<%= name %> <%= value %>
+<% end unless node['postfix']['smtp_generic_map_entries'].nil? %>