North American Network Operators Group
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Re: what happens when you put a typo in a DNSBL server?

  • From: John L
  • Date: Tue Jan 16 17:38:58 2007
  • Cleverness: None detected

JL> If only.  I am constantly amazed at the bozos who misconfigure their
JL> DNSBL lookups and don't notice.

Part of the problem is that the protocol is designed to overlay an
existing protocol without providing a valid positive response.  In
this case, lame ISP configures a typo and goes for ages without
noticing that it didn't help them at all because every query was
getting a NXDOMAIN back

Uh, not quite. Try looking up 2.0.0.127.abuse.net, and then explain to me why people keep hammering on it.

Regards,
John Levine, [email protected], Primary Perpetrator of "The Internet for Dummies",
Information Superhighwayman wanna-be, http://johnlevine.com, Mayor
"I dropped the toothpaste", said Tom, crestfallenly.