From: D Hill (d.hillyournetplus.com)
Date: Thu Apr 17 2008 - 23:32:30 CDT

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On Fri, 18 Apr 2008 at 00:01 -0400, jimjamesberwick.com confabulated:

> TechTalk wrote:
>>
>> On 17-Apr-08, at 3:17 PM, mouss wrote:
>>> PS. why do you have two PTR records for 66.119.164.107?
>>
>>
>> And, as far I can tell I only have one PTR record. The PTR record, reverse
>> DNS, is maintained by my ISP who controls the IP block.
>>
> host 66.119.164.107
> 107.164.119.66.in-addr.arpa domain name pointer db.anthemfx.com.
> 107.164.119.66.in-addr.arpa domain name pointer mail.anthemfx.com.

And if whomever enforces the reverse/name matches, db.anthemfx.com will
fail as it does not point to the same IP:

   %nslookup db.anthemfx.com
   ...
   Non-authoritative answer:
   Name: db.anthemfx.com
   Address: 66.119.164.106

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