diff --git a/metadata.rb b/metadata.rb
index aabab74..1c2d813 100644
--- a/metadata.rb
+++ b/metadata.rb
@@ -68,6 +68,11 @@ attribute "postfix/smtp_sasl_security_options",
   :description => "Sets the value of smtp_sasl_security_options in main.cf",
   :default => "noanonymous"
 
+attribute "postfix/inet_interfaces",
+  :display_name => "Postfix listening interfaces",
+  :description => "Interfaces to listen to, all or loopback-only. default is all for master mail_type, and loopback-only otherwise",
+  :default => ""
+
 attribute "postfix/smtp_tls_cafile",
   :display_name => "Postfix SMTP TLS CA File",
   :description => "CA certificate file for SMTP over TLS",
diff --git a/templates/default/main.cf.erb b/templates/default/main.cf.erb
index cae3e7a..d1f89f5 100644
--- a/templates/default/main.cf.erb
+++ b/templates/default/main.cf.erb
@@ -31,11 +31,11 @@ mydestination = <%= node['postfix']['myhostname'] %>, <%= node['hostname'] %>, l
 <% if node['postfix']['mail_type'] == "master" -%>
 relayhost =
 mynetworks = <%= node['postfix']['mail_relay_networks'] %>
-inet_interfaces = all
+inet_interfaces = <%= node[:postfix][:inet_interfaces] || 'all' %>
 <% else -%>
 relayhost = <%= node['postfix']['relayhost'] %>
 mynetworks = <%= node['postfix']['mail_relay_networks'] %>
-inet_interfaces = loopback-only
+inet_interfaces = <%= node[:postfix][:inet_interfaces] || 'loopback-only' %>
 <% end -%>
 <% if node['postfix']['use_procmail'] -%>
 mailbox_command = /usr/bin/procmail -a "$EXTENSION"