From owner-freebsd-questions  Tue Jan  7 18:49:56 2003
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Date: Tue, 7 Jan 2003 21:49:37 -0500
Subject: Re: dig command for reverse dsn check
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Cc: "Fuzzy" <fuzzy@pooh.ASARian.org>, "FBSDQ" <questions@FreeBSD.ORG>
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From: Brian Jackson <b.k.jackson@verizon.net>
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On Tuesday, January 7, 2003, at 09:42  PM, JoeB wrote:

> On Tue, 7 Jan 2003, JoeB wrote:
>
>> How do I check my ISP domain name to see if it's DNS server is
>> configured correctly for email reverse DNS lookup?
> I'd use:
>
> dig -x ip.ad.dr.ess PTR [@name.server]
>
> the ANSWER SECTION shows what DNS thinks is the
> reverse name for that IP.
>
> dig -x 66.26.76.83 ptr
>
> Thanks for the quick reply, but I need some clarification
> MY email address =   user@adelphia.net
> My email server mail.clvhoh.adelphia.net
> dig -x 66.26.76.83 ptr
> what IP address  to use in dig command?
> The ip address of the domain name or the email server?

use dig to find the IP address of your host (dig foo.bar)

use the IP address that comes back in the ANSWER section for the dig -x 
(IP address from above) PTR

again, look under the ANSWER section, and it will show you the reverse 
record.

Brian
--
Brian Jackson
b.k.jackson@verizon.net


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