gistfile1.txt

% for server, hostinfo in salt['mine.get']('*', 'grains.item').items() %}

{% set DNSIP = salt['dnsutil.A'](hostinfo['host'] + ".example.com")[0] %}

{% if DNSIP is defined %}
{{ hostinfo['host'] }} is in DNS:
  cmd.run:
    - name: echo 'in DNS'
{% else %}
{{ hostinfo['host'] }} not in DNS:
  file.managed:
    - name: /srv/salt/noDNS
    - contents: {{ hostinfo['host'] }}
    - makedirs: True
{% endif %}

{% endfor %}