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Can rDNS record indicate Dynamic/Static

Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=5070
Printed Date: 26 December 2024 at 12:12pm


Topic: Can rDNS record indicate Dynamic/Static
Posted By: Guests
Subject: Can rDNS record indicate Dynamic/Static
Date Posted: 23 February 2005 at 5:49pm

 

Is it possible to indicated in PTR record for some other DNS record that a given MX host has been assigned a static IP?

I recall Some RBLs such as Sorbs net blacklists IPs deemed to be Dynamic, while in fact they are legit leased to companies and are static assignments.  Having a record will save time and effort needed to maintain exclude lists.

Any thoughts?

Sam 

 


Replies:
Posted By: Desperado
Date Posted: 23 February 2005 at 6:06pm

Sam,

I am not 100% sure what you are asking BUT ... rDNS is in the hands of the "Authoritative Server" that is pointed to by the IP Authority (ARIN, RIPE, etc).  In MANY cases, ISP's (Cable companies in particular) do not update their DNS servers or inform the RBL's that a block is now static.  Having said that, can you better explain what you are attempting to do?

Regards,



-------------
The Desperado
Dan Seligmann.
Work: http://www.mags.net
Personal: http://www.desperado.com


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