Reverse DNS Lookup

[Michael Voight]

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.
> 




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.

Are these remote users on 209.220.225.24/29?? or a different network?
The delay would come when you tried to look up thier addresses if they
are on a different network.

Michael