[92893] in North American Network Operators' Group
Re: AT&T refuses to provide PTR records?
daemon@ATHENA.MIT.EDU (Jack Bates)
Tue Oct 17 17:26:21 2006
Date: Tue, 17 Oct 2006 16:25:25 -0500
From: Jack Bates <jbates@brightok.net>
To: nanog@nanog.org
In-Reply-To: <BB4C6E31FB19824ABFE69BDAD0F4EB50737868@zionexch01.ZION.local>
Errors-To: owner-nanog@merit.edu
Mike Walter wrote:
> We have a customer that has AT&T and they reassigned the IP space to our
> name servers to allow us to do reverse DNS for them.
>
We had a similar situation. AT&T states that they will only handle rDNS using
domains that they control. They will happily CNAME the IPs appropriately or
reassign the IP space, depending on block size and request.
The issue we ran into was that we couldn't get them to *unassign* a CNAME for an
IP block so that it would fail immediately, and so servers (web,ftp, etc) which
requested rDNS for the connection information would time out connections waiting
for the non-existent nameservers. We weren't really interested in handling rDNS
for the IP given that it wasn't handling mail, web, or have any A records
pointing to it. It is the easiest way to get it done, though.
Jack Bates
