hotmail.com live.com admin needed

Tue Oct 23 12:31:20 UTC 2012

Suresh,

The affected domains have never been on hotmail, etc.  We've actually 
held this domain/hosting for the past 14+ years on this particular 
domain.  Yes, there is an RFC violation, and it's apparently due to the 
greylisting feature from the spam filtering.

Carlos M. Perez
Runcentral, LLC

On 10/23/2012 4:37 AM, Suresh Ramasubramanian wrote:
> Falling back to A when there is an MX (especially after receiving any 
> kind of SMTP response from the MX) is an RFC violation by the way (rfc 
> 5321 section 5.1)
>
> Even then - this doesn't appear to be the case.  The bounce below was 
> generated entirely within Hotmail.  From SNT133-WS53 (a hotmail 
> webserver) to snt-omc3-s27.snt0.hotmail.com 
> <http://snt-omc3-s27.snt0.hotmail.com> - which I believe is part of 
> their outbound mail farm.  That's where the bounce was generated.
>
> "Requires authentication" might be because whatever domain is being 
> sent to was originally hosted on hotmail, and set to require 
> authentication to relay out through hotmail's servers.
>
> --srs
>
> On Tuesday, October 23, 2012, Michiel Klaver wrote:
>
>     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
>     <http://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 at xxxx.com <javascript:;>
>     > Action: failed
>     > Status: 5.5.0
>     > Diagnostic-Code: smtp;550 authentication required
>     > =
>     >
>     > Kindly contact me off-list.
>     >
>     > Thanks,
>     >
>
>
>
> -- 
> --srs (iPad)
>
>