[48846] in North American Network Operators' Group
Re: ATTBI refuses to do reverse DNS?
daemon@ATHENA.MIT.EDU (Robert A. Hayden)
Tue Jun 18 17:10:59 2002
Date: Tue, 18 Jun 2002 16:10:24 -0500 (CDT)
From: "Robert A. Hayden" <rhayden@geek.net>
To: Lou Katz <lou@metron.com>
Cc: <nanog@merit.edu>
In-Reply-To: <20020618113032.A5269@metron.com>
Errors-To: owner-nanog-outgoing@merit.edu
Most providers provide some kind for forward/reverse mapping, including
ATTBI. Often, however, they do provide customized reverse mapping (ie,
myhost.mydomain.com). That may be where the disconnect.
I believe that ATTBI has a script that auto-generates forward/reverse
mappings on a regular basis. You client may be just in a waiting period
before the problem corrects itselft.
On Tue, 18 Jun 2002, Lou Katz wrote:
>
> A client of mine just discovered that he could no longer do ftp
> transfers to my machine. His IP address had changed to one in
> 12.240.20 and there is no reverse DNS for that block. His
> previous assignment was in a totally different block which did
> have reverse DNS. Calls to ATTBI got the answer that they
> are not obligated to provide reverse DNS and have no plans to
> do so. My servers refuse connections when there is no reverse
> lookup.
>
> Is this common?
>
>
