nanog mailing list archives
Re: what happens when you put a typo in a DNSBL server?
From: "Chris L. Morrow" <christopher.morrow () verizonbusiness com>
Date: Tue, 16 Jan 2007 18:32:07 +0000 (GMT)
On Tue, 16 Jan 2007, Wes Hardaker wrote:
A number of ISPs use njabl.org as a DNS BL server. However, starting jan 2 a new domain exists "njalb.org" which is serving A records for anything queried against it's DNS server. (note the difference: njaBL vs njaLB). Previous to this date a misconfigured ISP was just not being protected by the BL. Now, it's potentially dropping all mail from anyone because of the typo. # dig +short mail.merit.edu a 198.108.1.11 # dig +short 11.1.108.198.combined.njabl.org # dig +short 11.1.108.198.combined.njalb.org 64.20.43.107 66.45.232.66 66.45.232.75 66.45.237.187
right, these are those pesky njiix.net 'dns servers' that send the same 4 A's for any request. I suspect their zone config is: * IN A 64.20.43.107 IN A 66.45.232.66 IN A 66.45.232.75 IN A 66.45.237.187 in the root.zone file :(
Current thread:
- what happens when you put a typo in a DNSBL server? Wes Hardaker (Jan 16)
- Re: what happens when you put a typo in a DNSBL server? Alexander Harrowell (Jan 16)
- Re: what happens when you put a typo in a DNSBL server? John Levine (Jan 16)
- Re: what happens when you put a typo in a DNSBL server? Wes Hardaker (Jan 16)
- Re: what happens when you put a typo in a DNSBL server? John L (Jan 16)
- Re: what happens when you put a typo in a DNSBL server? Steve Sobol (Jan 19)
- Re: what happens when you put a typo in a DNSBL server? Wes Hardaker (Jan 16)
- Re: what happens when you put a typo in a DNSBL server? Chris L. Morrow (Jan 16)
- Re: what happens when you put a typo in a DNSBL server? Steve Linford (Jan 16)
- Re: what happens when you put a typo in a DNSBL server? Steve Atkins (Jan 17)