DNS queries for the IP address will go to who is authoritative for the IP's. 
That would be either Phil or your ISP who owns those IP's :)

DNS queries for your domain would go to you (assuming you list DNS servers as 
authoritative).



From: Kelsey, John [mailto:jckel...@drmc.org]
Sent: Wednesday, March 03, 2010 10:01 AM
To: NT System Admin Issues
Subject: RE: Reverse DNS Failing?

I'm about 20 minutes from Punxsy Phil =)  Our hospital and Punxsy hospital are 
on the same ISP.

But here is where my lack of DNS skillz comes in to play.
    Shouldn't any dns queries for my mail server come to MY dns server, 
regardless of who my ISP is?  Or am I not understanding how that lookup works?

Thanks!

And Phil says there will be 6 more weeks of winter!   =)

*******************************
John C. Kelsey
DuBois Regional Medical Center
*:  814.375.3073
*:   jckel...@drmc.org<mailto:jckel...@drmc.org>
*******************************
-----Original Message-----
From: Michael B. Smith [mailto:mich...@smithcons.com]
Sent: Wednesday, March 03, 2010 09:34
To: NT System Admin Issues
Subject: RE: Reverse DNS Failing?
Your reverse DNS doesn't match your forward DNS and your reverse DNS is 
"spammy" (66-237-146-66.static.pah.org). Have your ISP fix the rDNS to 
something unspammy.

HAHAHAHAHAHA. I just went and looked. Your "isp" is Punxsutawney Phil's 
hospital? :)

Regards,

Michael B. Smith
Consultant and Exchange MVP
http://TheEssentialExchange.com

From: Kelsey, John [mailto:jckel...@drmc.org]
Sent: Wednesday, March 03, 2010 9:25 AM
To: NT System Admin Issues
Subject: Reverse DNS Failing?

Having and issue sending email to a single domain.  Messages bounce back with:

agnostic-Code: smtp;450 Client host rejected: cannot find your hostname, 
[66.146.237.66]

I have both forward and reverse entries for our mail server (Exchange 2003) so 
I'm not sure why it can't find it.  Am I missing something in the DNS setup?

So far, this is the only domain I haven't been able to send email to.

Thanks all!

*******************************
John C. Kelsey
DuBois Regional Medical Center
*:  814.375.3073
*  :   814.375.4005
*:   jckel...@drmc.org<mailto:jckel...@drmc.org>
*******************************


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