[66618] in North American Network Operators' Group
Re: SMTP problems from *.ipt.aol.com
daemon@ATHENA.MIT.EDU (Chris Lewis)
Sat Jan 17 14:27:26 2004
Date: Sat, 17 Jan 2004 14:22:28 -0500
From: "Chris Lewis" <clewis@nortelnetworks.com>
Cc: nanog@nanog.org
In-Reply-To: <4008B38A.4090106@outblaze.com>
Errors-To: owner-nanog-outgoing@merit.edu
Suresh Ramasubramanian wrote:
> Sean Donelan [1/17/2004 9:20 AM] :
>
>> True, but it appears AOL has cranked something up in the last couple
>> of weeks or something is choking more often. If you look at various
>> places where users like to gripe, you'll notice an uptick of queries
>> and complaints on the subject.
> Maybe they finally rolled this out across the board? AOL has a lot of
> dialup IP space (two /10s I think).
The ipt.* blocking dates back many years, I think the intercepter stuff
does too.
The recommendation from AOL to rDNS block ipt.* dates back several
years, and is mentioned in the current postmaster's guide at AOL.
Over the past several months I noticed we were getting a lot of ipt.*
hits, and Hutzler later said that some of their blocks in (IIRC) Europe
were apparently not working. Obviously, they just fixed it.
We get virtually nothing but spam from rly.* too, so, we're blocking it
now. Hutzler remarked "you won't miss much", but I wouldn't take that
as an official pronouncement. We get a handful of FPs on it per month,
and we tell them to use the proper smarthosting.
