[122978] in North American Network Operators' Group
Re: ATT / Bellsouth Email Feedback Loop
daemon@ATHENA.MIT.EDU (Wade Peacock)
Thu Feb 25 12:08:48 2010
Date: Thu, 25 Feb 2010 09:07:16 -0800
From: Wade Peacock <wade.peacock@sunwave.net>
To: nanog@nanog.org
In-Reply-To: <4B869EA7.5070409@sunwave.net>
Reply-To: wade.peacock@sunwave.net
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
I figure I should follow up with a sample error message from our logs:
<xxxxxxxx@bellsouth.net>: host gateway-f2.isp.att.net[207.115.11.16] refused to
talk to me: 550-208.98.210.35 blocked by ldap:ou=rblmx,dc=att,dc=net 550
Error - Blocked for abuse. See http://att.net/blocks
Wade Peacock
On 02/25/2010 08:00 AM, Wade Peacock wrote:
> Greetings Brain Trust,
>
> We have found ATT to be heavy handed with their email (spam) filtering.
> Without warn all of our mail servers will be denied from delivering
> email to their many domains (att.net, bellsouth.net, etc). They have a
> removal request form (like most other large ISPs) which takes 2 days to
> process. We never find out why the we get listed. We always check as
> many "email" reputation systems and rbl searches to determine why.
> Everywhere we
> look we see no evidence of a problem. We have joined other ISP feedback
> look system, (AOL, Yahoo and even Hotmail/Live) which all have helped
> stop issues (comprised accounts, bots, etc) before they get to the point
> of a listing/block.
>
> I have searched and I can not find out definitively whether ATT has or
> does not has a feedback loop system. Anyone out there know?
>
>
