<?xml version='1.0' encoding='UTF-8'?>
<rougail version="0.10">
  <services>
    <service name="test">
      <file file_type="variable" source="mailname" variable="var">file_name</file>
    </service>
  </services>
  <variables>
    <variable name="file_name" type="filename">
      <value>/etc/mailname</value>
    </variable>
    <variable name="var" type="string">
      <value>mailname</value>
    </variable>
  </variables>
</rougail>