Reverse DNS Lookup

[Matt Wade]

Thanks for the quick reply.

The remote IP address that's giving me trouble is: 209.220.225.26.

When I do an nslookup here's what I get:
# nslookup 207.172.111.120
Server:  cameron.dcaccess.net
Address:  209.220.225.26
Aliases:  26.225.220.209.in-addr.arpa

Name:    207-172-111-120.s120.tnt1.ann.va.dialup.rcn.com
Address:  207.172.111.120

I get this response immediately. So it seems to me that their IP address
is mapped OK, right?

Thanks Again,
Matt

"David T. Smith" wrote:

> At 09:50 AM 6/2/99 PDT, Matt Wade wrote:
> >Hi,
> >
> >I'm having trouble setting up my classless reverse delegation.
> >
> >My ISP (concentric.net) has delegated the IP addresses
> >209.220.225.24/29 to my name server (dns1.dcaccess.net).
> >
> >I've read RFC 2317 and the DNS & BIND book. Concentric's name server
> >(nameserver.concentric.net) and my name server seem to be setup
> >correctly. Httpd reverse lookups seem to work (I can download the
> >128bit version of Netscape).
> >
> >However, when remote users try and log into my FTP server
> >(ftp.dcaccess.net), it takes over a minute to get connected.  I know
> >this is a reverse lookup error, but I can't figure out how to fix it.
> >
> >When I use nslookup I get output like this:
> ># nslookup
> >Default Server:  cameron.dcaccess.net
> >Address:  209.220.225.26
> >Aliases:  26.225.220.209.in-addr.arpa
> >
> >Is that Aliases line OK? or is that my problem? Any help would be
> >GREATLY appreciated. Let me know if you need more information.
>
> You may be OK.  I looked at your in-addr.arpa. records and they
> should be fine.  I also connected to your FTP server and it prompted
> me for a login ID immediately.  Your users probably do not have
> reverse resolution for _their_ addresses.
>
> >
> >-Matt
> >
> >
>
> DTS
>
> D A V I D  T .   S M I T H
> Principal Consultant, Network Solutions
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