hotmail.com live.com admin needed

[michiel at klaver.it (Michiel Klaver)]

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 at xxxx.com
> Action: failed
> Status: 5.5.0
> Diagnostic-Code: smtp;550 authentication required
> =
> 
> Kindly contact me off-list.
> 
> Thanks,
>