old_contents: #!/usr/bin/python
  # encoding: utf-8
  """
  props.py
  
  Created by Lou Mauget on 2013-05-11.
  MIT License
  Copyright (c) 2013 Louis E. Mauget, mauget@mindspring.com
  
  Rename file to props.py and set values for your environment
  """
  # Target DNS
  dns_name = 'DNS name to be monitored'
  
  # Interval in seconds; loop continuation is do_run value; Forever is True
  interval = 60*30
  do_run = False
  
  # Notify even if IP didn't change
  always_notify = False
  
  # SMTP properties
  smtp_server = 'your smtp server address'
  smtp_port = 587
  smtp_user = 'smtp user name'
  smtp_password = 'smtp password here'
  smtp_debug_level = 1;  # 1 or 0 works
  
  # Email properties
  sender = 'mauget@mindspring.com'
  #receivers = ['mauget@mindspring.com', 'mauget@gmail.com']
  receivers = ['mauget@mindspring.com']
  
  message_template = """From: %s
  To: Somebody <sombody@someorg.org>
  MIME-Version: 1.0
  Content-type: text/html
  Subject: DNS IP Tracking
  
  <table>
  <tr><th>DNS name</th><td>%s</td></tr>
  <tr><th>IP Change</th><td>%s</td></tr>
  <tr><th>Current IP</th><td>%s</td></tr>
  <tr><th>Cached IP</th><td>%s</td></tr>
  </table>
  <p>
  From DNS IP Checker
  </p>
  """
  # Tracking file name and location
  tracker_file = 'tracker_file.txt'
  
new_contents: #!/usr/bin/python
  # encoding: utf-8
  """
  props.py
  
  Created by Lou Mauget on 2013-05-11.
  MIT License
  Copyright (c) 2013 Louis E. Mauget, mauget@mindspring.com
  
  Rename file to props.py and set values for your environment
  """
  # Target DNS
  dns_name = 'DNS name to be monitored'
  
  # Interval in seconds; loop continuation is do_run value; Forever is True
  interval = 60*30
  do_run = False
  
  # Notify even if IP didn't change
  always_notify = False
  
  # SMTP properties
  smtp_server = 'your smtp server address'
  smtp_port = 587
  smtp_user = 'smtp user name'
  smtp_password = 'smtp password here'
  smtp_debug_level = 1;  # 1 or 0 works
  
  # Email properties
  sender = 'user@email.net'
  receivers = ['sombody@someorg.org', 'somebodyelse@otherplace.com']
  
  message_template = """From: %s
  To: Somebody <sombody@someorg.org>
  MIME-Version: 1.0
  Content-type: text/html
  Subject: DNS IP Tracking
  
  <table>
  <tr><th>DNS name</th><td>%s</td></tr>
  <tr><th>IP Change</th><td>%s</td></tr>
  <tr><th>Current IP</th><td>%s</td></tr>
  <tr><th>Cached IP</th><td>%s</td></tr>
  </table>
  <p>
  From DNS IP Checker
  </p>
  """
  # Tracking file name and location
  tracker_file = 'tracker_file.txt'
  
subject: Generalize sample config values