best practices for PTR naming and whois (was, sadly, Re: Arrogant RBL list maintainers)

Joe Abley jabley at
Thu Dec 10 11:06:12 CST 2009

On 2009-12-10, at 16:42, Michael Thomas wrote:

> On 12/10/2009 08:38 AM, Mark Andrews wrote:
>> The way to do this is to put other data in the and
>> stop trying to infer things from the PTR records.
> Sigh. What is the "this" to which you refer?

I think Mark means "the question of whether a particular address is statically-assigned or dynamically-assigned", but...

> The problem space here is what's important. And I think it's worth considering
> that port 25 isn't the only abuse vector anymore.

... I agree that there's no clear limit to the kind of questions we could come up with that we could answer in such a way. Maybe we don't need to boil the ocean, though.

@ SOA ...
@ NS ...
13 PTR
13 HINFO Apple-Mac-Mini "Mac OS X Server"
13 RP .
13 TXT "dynamic"
* RP .
* HINFO Nothing "Unallocated"
* TXT "unallocated, should source no traffic"


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