[anti-abuse-wg] AS41609, AS203974, and Alexandru ("Andrei") Stanciu / Suceava, Romania

On Fri, 04 Aug 2017 12:46:06 -0700
"Ronald F. Guilmette" <rfg at tristatelogic.com> wrote:
> ox <andre at ox.co.za> you wrote:
> >For Abuse purposes... Email Administrators should as a rule not
> >relay/accept emails from IP numbers with no reverse...  
> I do agree completely.  However as is made clear by this exact case,
> there are enough inbound mail servers still left on this planet that

yes, sadly some of the providers on this list, it is conservatively less
than 25% though (aggressive/optimistically 10%), so there is a
small/smaller minority still to convert...

/* Taking a small break for marketing / advertisement...
**************************************************************
If you are reading this thread and you accept emails for relay with no 
rDNS check, please consider changing your policy :)
*/

> do not follow that rule so as to make it worthwhile for spammers to
> continue to go to great lengths... even hijacking old & abandoned
> legacy IPv4 blocks... to get "fresh" IP addresses, even if they can't
> set up any reverse DNS for those.
> 
> In a way, this case shows just how desperate spammers have become
> in their search for "fresh" IP addres space.
> 
Agree 100% :)

Andre