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

Michael Thomas mike at
Thu Dec 10 10:42:28 CST 2009

On 12/10/2009 08:38 AM, Mark Andrews wrote:
> In message<4B211DA6.9000203 at>, Michael Thomas writes:
> To Crocker's point though: if IETF came up with a way to publish your network's
>> dynamic space (assuming that's The Problem!), would operators do that? Or is
>> this another case where the energy barrier is too high?
>> Mike
> 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?

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.


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