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Re: [cobalt-users] RaQ4 nslookup doesn't work



On Thu, Nov 22, 2001 at 01:48:26PM -0000, Ben Liddicott wrote:
> ----- Original Message -----
> From: "Gerald Waugh" <gerald@xxxxxxxxx>
> 
> 
> > If you do not have a full /24 network, you may need to
> > contact your ISP and tell them you want PTR records in
> > accordance with RFC-2317.
> 
> Call me ignorant, but there's not much call in my experience for PTR records. If I was you I would configure my NS to be primary for
> the whole class C, simply because there are so many hoops otherwise, and the downside is so small.
> 
> What is the downside, anyway?? (Apart from NSLookup not working if the default host doesn't have a PTR of course, which the above
> solves if you control the NS.)

Many   SMTP   and  NNTP servers allow transfer mail and news only
from hosts that have a correct reverse DNS.