diff --git a/attributes/default.rb b/attributes/default.rb
index 1dcaebb..cf72996 100644
--- a/attributes/default.rb
+++ b/attributes/default.rb
@@ -24,14 +24,21 @@ default['postfix']['use_alias_maps'] = false
 default['postfix']['use_transport_maps'] = false
 default['postfix']['use_access_maps'] = false
 default['postfix']['use_virtual_aliases'] = false
+default['postfix']['use_virtual_aliases_domains'] = false
 default['postfix']['aliases'] = {}
 default['postfix']['transports'] = {}
 default['postfix']['access'] = {}
 default['postfix']['virtual_aliases'] = {}
+default['postfix']['virtual_aliases_domains'] = {}
 default['postfix']['main_template_source'] = 'postfix'
 default['postfix']['master_template_source'] = 'postfix'
 default['postfix']['sender_canonical_map_entries'] = {}
 default['postfix']['smtp_generic_map_entries'] = {}
+default['postfix']['access_db_type'] = 'hash'
+default['postfix']['aliases_db_type'] = 'hash'
+default['postfix']['transport_db_type'] = 'hash'
+default['postfix']['virtual_alias_db_type'] = 'hash'
+default['postfix']['virtual_alias_domains_db_type'] = 'hash'
 
 case node['platform']
 when 'smartos'
@@ -40,12 +47,14 @@ when 'smartos'
   default['postfix']['transport_db'] = '/opt/local/etc/postfix/transport'
   default['postfix']['access_db'] = '/opt/local/etc/postfix/access'
   default['postfix']['virtual_alias_db'] = '/opt/local/etc/postfix/virtual'
+  default['postfix']['virtual_alias_domains_db'] = '/opt/local/etc/postfix/virtual_domains'
 when 'omnios'
   default['postfix']['conf_dir'] = '/opt/omni/etc/postfix'
   default['postfix']['aliases_db'] = 'opt/omni/etc/postfix/aliases'
   default['postfix']['transport_db'] = '/opt/omni/etc/postfix/transport'
   default['postfix']['access_db'] = '/opt/omni/etc/postfix/access'
   default['postfix']['virtual_alias_db'] = '/etc/omni/etc/postfix/virtual'
+  default['postfix']['virtual_alias_domains_db'] = '/etc/omni/etc/postfix/virtual_domains'
   default['postfix']['uid'] = 11
 else
   default['postfix']['conf_dir'] = '/etc/postfix'
@@ -53,6 +62,7 @@ else
   default['postfix']['transport_db'] = '/etc/postfix/transport'
   default['postfix']['access_db'] = '/etc/postfix/access'
   default['postfix']['virtual_alias_db'] = '/etc/postfix/virtual'
+  default['postfix']['virtual_alias_domains_db'] = '/etc/postfix/virtual_domains'
 end
 
 # Non-default main.cf attributes
@@ -119,7 +129,11 @@ if node['postfix']['use_access_maps']
 end
 
 if node['postfix']['use_virtual_aliases']
-  default['postfix']['main']['virtual_alias_maps'] = ["hash:#{node['postfix']['virtual_alias_db']}"]
+  default['postfix']['main']['virtual_alias_maps'] = ["#{node['postfix']['virtual_alias_db_type']}:#{node['postfix']['virtual_alias_db']}"]
+end
+
+if node['postfix']['use_virtual_aliases_domains']
+  default['postfix']['main']['virtual_alias_domains'] = ["#{node['postfix']['virtual_alias_domains_db_type']}:#{node['postfix']['virtual_alias_domains_db']}"]
 end
 
 # # Default main.cf attributes according to `postconf -d`
diff --git a/recipes/virtual_aliases_domains.rb b/recipes/virtual_aliases_domains.rb
new file mode 100644
index 0000000..c02efca
--- /dev/null
+++ b/recipes/virtual_aliases_domains.rb
@@ -0,0 +1,28 @@
+# encoding: utf-8
+# Copyright:: Copyright (c) 2012, Opscode, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+include_recipe 'postfix::_common'
+
+execute 'update-postfix-virtual-alias-domains' do
+  command "postmap #{node['postfix']['virtual_alias_domains_db']}"
+  environment PATH: "#{ENV['PATH']}:/opt/omni/bin:/opt/omni/sbin" if platform_family?('omnios')
+  action :nothing
+end
+
+template node['postfix']['virtual_alias_domains_db'] do
+  source 'virtual_aliases_domains.erb'
+  notifies :run, 'execute[update-postfix-virtual-alias-domains]'
+end
diff --git a/templates/default/virtual_aliases_domains.erb b/templates/default/virtual_aliases_domains.erb
new file mode 100644
index 0000000..a02a35a
--- /dev/null
+++ b/templates/default/virtual_aliases_domains.erb
@@ -0,0 +1,10 @@
+#
+# This file is generated by Chef for <%= node['fqdn'] %>
+#
+# Local changes will be overwritten
+#
+# See man 5 virtual for format
+
+<% node['postfix']['virtual_aliases_domains'].each do |key, value| %>
+<%= key %> <%= value %>
+<% end unless node['postfix']['virtual_aliases_domains'].nil? %>