reverse name resolution is not working outside of your own name
servers...

ex.
#########################################################
% nslookup
Default Server:  localhost.multinet-media.com
Address:  127.0.0.1

> server ns2.uncanny.net
Default Server:  ns2.uncanny.net
Address:  140.174.20.7

> 140.174.20.7
Server:  ns2.uncanny.net
Address:  140.174.20.7

Name:    ns2.uncanny.net
Address:  140.174.20.7

> server ns1.root.com
Default Server:  ns1.root.com
Address:  209.102.106.178

> 140.174.20.7
Server:  ns1.root.com
Address:  209.102.106.178

*** ns1.root.com can't find 140.174.20.7: Server failed

#########################################################

whoever is responsible for the IP block(s, classes) you are using would
need to add
PTR records; as they are the authority ( there is a record for ns1 ).
Having
reverse lookup on your own nameservers is a good thing to have, but
that's
not where the rest of the world is going to query from, unless they're
using your DNS.

or supposedly an entry like...

140.174.20.254    IN    NS    ns2.uncanny.net.

in the 20.174.140.in-addr records ( on the providers nameserver ) will
work.
This would (supposedly) cause remote queries to be redirected to your
namesever.  I've never tried it, though.

Good Luck,
-Drew

Edward Elhauge wrote:

> I'm getting the following message when I try to post to the
> freebsd-hackers list from uncanny.net.
>
> -- Ed Elhauge
>
> =========== START of ERROR MAIL ===================
> The original message was received at Fri, 15 Oct 1999 02:23:43 -0700
> (PDT)
> from sandbox.uncanny.net [140.174.20.254]
>
>    ----- The following addresses had transient non-fatal errors -----
> <[EMAIL PROTECTED]>
>
>    ----- Transcript of session follows -----
> ... while talking to hub.freebsd.org.:
> >>> EHLO ns2.uncanny.net
> <<< 450 Cannot find your hostname, [140.174.20.7]
> <[EMAIL PROTECTED]>... Deferred: 450 Cannot find your
> hostname, [140.1
> 74.20.7]
> Warning: message still undelivered after 4 hours
> Will keep trying until message is 5 days old
> ==============END of ERROR MAIL ===========================
>
> To Unsubscribe: send mail to [EMAIL PROTECTED]
> with "unsubscribe freebsd-questions" in the body of the message
begin:vcard 
n:Wiggins;John
tel;cell:(806) 786-2764
tel;fax:(806) 472-0858
tel;home:(806) 786-2764
tel;work:(806) 791-9993
x-mozilla-html:TRUE
url:http://www.MultiNet-Media.com/
org:MultiNetMedia;Operations
version:2.1
email;internet:[EMAIL PROTECTED]
title:IT Director
adr;quoted-printable:;;1316 27th Street=0D=0A;Lubbock;TX  ;79405;USA
x-mozilla-cpt:;15408
fn:Drew Wiggins
end:vcard

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