sample dns entry for reverse lookup

When I run a dnsstuff.com scan on my domain, i'm
getting a reverse dns entry error for my mail. 
Therefore, some people are either rejecting my mail,
or will not send me mail...

I'm running RED Hat es5.   I have a dedicated DNS
server, dedicated WEB server, and a dedicated EMAIL
server.

Can someone either point me to a website that would
have some samples as to what my db.xxx files should
look like? or share one with me.

Thanks,

James



     
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Typically, the reverse DNS will have to be setup by your
ISP/Provider
(unless you're your own ISP and you manage an authoritative
DNS server.

I know that I had to get XO (our ISP) to set the reverse DNS
entry for us,
and they connected to the mail server via telnet to check
that the server
was responding properly prior to adding into their DNS. 



Glenn Meadows
Sheridan Square Entertainment
-----Original Message-----
From: James Carter [mailto:bubba65_1998yahoo.com] 
Sent: Monday, January 07, 2008 4:52 PM
To: surgemail-listnetwinsite.com
Subject: [SurgeMail List] sample dns entry for reverse
lookup

When I run a dnsstuff.com scan on my domain, i'm getting a
reverse dns entry
error for my mail. 
Therefore, some people are either rejecting my mail, or will
not send me
mail...

I'm running RED Hat es5.   I have a dedicated DNS
server, dedicated WEB server, and a dedicated EMAIL server.

Can someone either point me to a website that would have
some samples as to
what my db.xxx files should look like? or share one with
me.

Thanks,

James



 
____________________________________________________________
________________
________
Be a better friend, newshound, and
know-it-all with Yahoo! Mobile.  Try it now.
http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9
tAcJ 

James Carter wrote:
> When I run a dnsstuff.com scan on my domain, i'm
> getting a reverse dns entry error for my mail. 
> Therefore, some people are either rejecting my mail,
> or will not send me mail...
>
> I'm running RED Hat es5.   I have a dedicated DNS
> server, dedicated WEB server, and a dedicated EMAIL
> server.
>
> Can someone either point me to a website that would
> have some samples as to what my db.xxx files should
> look like? or share one with me.
>
> Thanks,
>
> James
>
>
>
>      
____________________________________________________________
________________________
> Be a better friend, newshound, and 
> know-it-all with Yahoo! Mobile.  Try it now.  http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9
tAcJ 
>
>
>   
It is quite easy to be authoritative for a domain name that
you have
registered for your self.  Very simple because you can tell
the
registrar where the authoritative name servers are for
mydomain.com is.

For reverse lookups, before you think about setting up
reverse lookups,
you have to be authoritative for that range of ip addresses.
If you are
not authoritative for ip addresses, no one is going to ask
you for the
reverse lookups for your ip addresses. You need to get your
upstream
provider to delegate authority for them to you as they
usually get their
IP addresses from ARIN or have a large block assigned to
them from their
upstream provider. And even then many providers won't assign
you as
authoritative for a block of ip addresses unless you get 256
addresses
(or a class C subnet) or more.  For what it's worth I pay
just under
$300 per year for the /24 assigned to us.

That leaves you with begging your upstream provider to
change the
reverse lookups for your assigned ip addresses in their
reverse or
in-arpa database and also means you have to have statically
assigned ip
addresses.

If you can get past the hurdle of getting your upstream
provider to
delegate authority and still want to have your own reverse
database, I
would be more than happy to assist you.

BTW, I learned by investing in a book from O'Reilly called
DNS and BIND
by Paul Albitz and Cricket Liu.  Back then Cricket Liu even
frequently
ISC's Bind forum...

Lyle Giese
LCR Computer Services, Inc.