nanog mailing list archives
Re: Anyone from AT&T here? (AT&T bogus DNSBL answers)
From: jlewis () lewis org
Date: Sat, 17 Apr 2004 16:06:06 -0400 (EDT)
Steve Linford wrote:
AT&T customers have contacted us saying they can't reach any of our DNSBLs, seems AT&T have defined a fake sbl.spamhaus.org zone in their DNS servers so when AT&T customers ask AT&T's NS 12.149.189.2 for sbl.spamhaus.org they get: ...
I was looking at this some more last night, and noticed this appears to have been some kind of mistaken identity issue. Check the whois and PTR for 12.149.189.2. It certainly doesn't appear to be an AT&T maintained DNS server. If there really are/were AT&T customers who couldn't resolve the various popular DNSBLs, I wonder, was the issue caused by something else? Are they setup to query the wrong DNS servers...perhaps 12.149.189.2 used to be an AT&T DNS server before 2001-09-05, but since then, it's been an AT&T customer's machine. Maybe that customer is getting hammered with queries from old AT&T customers and is trying to encourage them to go elsewhere for DNS service. ---------------------------------------------------------------------- Jon Lewis *jlewis () lewis org*| I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________
Current thread:
- Anyone from AT&T here? (AT&T bogus DNSBL answers) Steve Linford (Apr 14)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Patrick W . Gilmore (Apr 14)
- <Possible follow-ups>
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) jlewis (Apr 17)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Steve Linford (Apr 17)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Raymond Dijkxhoorn (Apr 17)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Michael . Dillon (Apr 19)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Patrick W . Gilmore (Apr 19)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) just me (Apr 19)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Valdis . Kletnieks (Apr 19)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Joe Abley (Apr 19)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Steve Linford (Apr 17)
- Re: Anyone from AT&T here? (AT&T bogus DNSBL answers) Paul Vixie (Apr 19)