[157459] in North American Network Operators' Group
Re: hotmail.com live.com admin needed
daemon@ATHENA.MIT.EDU (Michiel Klaver)
Tue Oct 23 04:28:47 2012
Date: Tue, 23 Oct 2012 10:28:24 +0200
From: Michiel Klaver <michiel@klaver.it>
To: "Carlos M. Perez" <cperez@runcentral.com>
In-Reply-To: <5085C5A0.7030206@runcentral.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Carlos,
check the mail logs of your web-server, your domain might have a primary
A-record pointing to something different than MX-records. When the MX
servers do something like greylisting and bounce with a temp-code (4xx)
hotmail servers will try alternative records (like @ IN A) and might find a
listening mail-daemon at your webserver.
At 23-10-2012 00:16, Carlos M. Perez wrote:
> Hi,
>
> We're trying to resolve some delivery issues reported by hotmail users.
> Started happening a few weeks ago. Getting immediate NDRs, and the
> server that is supposed to receive the email has no records of
> attempts. The messages also don't match what the receiving server
> should be sending. The server(s) listed in the MX should receive all
> email without authentication, since it's a mail filtering service (Maxmail)
>
> =
> Reporting-MTA: dns;snt0-omc3-s27.snt0.hotmail.com
> Received-From-MTA: dns;SNT133-W53
> Arrival-Date: Mon, 22 Oct 2012 14:09:49 -0700
>
> Final-Recipient: rfc822;administrator@xxxx.com
> Action: failed
> Status: 5.5.0
> Diagnostic-Code: smtp;550 authentication required
> =
>
> Kindly contact me off-list.
>
> Thanks,
>
