Re: [cobalt-users] RAQ2 Unable to get canonical name of client

[flash22@xxxxxxx]

On Thu, 10 Jan 2002, Peter Low wrote:

> At 09:52 AM 1/10/02 -0500, you wrote:
> >On Thu, 10 Jan 2002, Paul Alcock wrote:
> >
> > > I love it when folks post messages that lead me to a problem (sic)
> > > Ok, I took a look at the /var/log/maillog with tail and found
> > > quite a lot of msg's stating....
> > > Jan 10 09:22:34 raq2 in.qpopper[29154]: (v?)
> > > Unable to get canonical name of client xxx.xxx.xxx.xxx: Unknown host (1)
> > > [pop_init.c:401]
> > >
> > > ( I have replaced my PC IP with xxx.xxx.xxx.xxx in the line above)
> > >
> > > Is this a Problem?
> >
> >Not really, it's a client problem, the client IP address doesn't reverse
> >to a domain name, this will only affect the client's ability to receive
> >mail, not the server's ability to send it. And it probably won't even do
> >that, other than making it slow.
> 
> Is there any way to fix/address this problem?  I've seen suggestions of 
> adding to the hosts file, but have not gotten that to work.

You could yell at their ISP, they are supposed to provide reverse ;P
You would ,however sound somewhat hypocritical, as your own IP doesn't
reverse either ;P

205.158.159.194
ARIN:  Domain System inverse mapping provided by:NAMESERVER.CONCENTRIC.NET

*** hudson.concentric.net can't find 194.159.158.205.in-addr.arpa:***
nic1.concentric.net can't find 194.159.158.205.in-addr.arpa:

Seems to be a lot of that going around ;P

(It's probably delegated to xo.net and lost in space)

gsh