North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: what happens when you put a typo in a DNSBL server?
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 :(
|