[AusNOG] [SHAME] spamrats.com

[Mark Smith]

----- Original Message -----
> From: Anand Kumria <akumria at acm.org>
> To: Noel Butler <noel.butler at ausics.net>
> Cc: ausnog at lists.ausnog.net
> Sent: Thursday, 10 January 2013 6:55 PM
> Subject: Re: [AusNOG] [SHAME] spamrats.com
> 
> On 10 January 2013 05:59, Noel Butler <noel.butler at ausics.net> wrote:
>>  On Thu, 2013-01-10 at 13:08 +1000, Julian DeMarchi wrote:
>> 
>>  On 01/10/2013 01:04 PM, Paul Fraser wrote:
>>>  Not that I agree with it, but I thought this was pretty much the norm 
> as a
>>>  spam mitigation technique...
>> 
>>  A /32 yes. You can't block a whole /24 for no PTRs... I wouldn't be
>>  running 252 mail servers on one subnet...
>> 
>> 
>>  RFC 1912, Section 2.1 says every Internet-reachable host should have a name
>>  and "Make sure your PTR and A records match" and "For every 
> IP address,
>>  there should be matching PTR record in the in-addr.arpa domain"
>> 


RFC1912 is an Informational RFC, not even a Best Current Practice. It's providing good advice, but is not providing any mandates on how DNS is to be operated.

RFCs aren't automatically standards that have to be followed (otherwise we'd all be pigeon fanciers).


RFC2026 is the authority on RFC status, however the following gives an overview:

https://en.wikipedia.org/wiki/Request_for_Comments#Status