North American Network Operators Group
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RE: Detecting a non-existent domain

  • From: Kee Hinckley
  • Date: Tue Sep 23 19:45:02 2003 
At 2:46 PM -0700 9/23/03, David Schwartz wrote:
He asked for the "optimal way" "to see if a given host truly exists" and
you told him how to confirm or deny the "existance of a domain". He asked
about hosts, you answered about domains.
In fairness I was ambiguous. Although Verisign ought to be describing all of these techniques. But depending on the circumstances I primarily need to check for A records or MX and A records.
--
Kee Hinckley
http://www.messagefire.com/ Next Generation Spam Defense
http://commons.somewhere.com/buzz/ Writings on Technology and Society

I'm not sure which upsets me more: that people are so unwilling to accept
responsibility for their own actions, or that they are so eager to regulate
everyone else's.