[Oliver B]

Good morning.

I am experimenting several troubles with my Kimsufi IP when sending mails to Hotmail accounts. First was Gmail (which error I could repair) and now it is time to Hotmail. This is so annoying, and I really do not understand why I am having this kind of troubles when I never sent SPAM from my KS IP. Can anyone please help me?

I paste the error I am getting below:

This is the mail system at host ns3309580.ip-5-135-160.eu.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<((account))>: host mx3.hotmail.com[65.55.37.72] said: 550 SC-001
   (COL004-MC1F6) Unfortunately, messages from 5.135.160.115 weren't sent.
   Please contact your Internet service provider since part of their network
   is on our block list. You can also refer your provider to
   http://mail.live.com/mail/troubleshooting.aspx#errors. (in reply to MAIL
   FROM command)
Reporting-MTA: dns; ns3309580.ip-5-135-160.eu
X-Postfix-Queue-ID: 6B24EFB07E
X-Postfix-Sender: rfc822; ((account))
Arrival-Date: Wed, 26 Nov 2014 10:11:11 +0100 (CET)

Final-Recipient: rfc822; ((account))
Original-Recipient: rfc822;((account))
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx3.hotmail.com
Diagnostic-Code: smtp; 550 SC-001 (COL004-MC1F6) Unfortunately, messages from
   5.135.160.115 weren't sent. Please contact your Internet service provider
   since part of their network is on our block list. You can also refer your
   provider to http://mail.live.com/mail/troubleshooting.aspx#errors.
Return-Path: <((account))>
Received: from mail.ascensoresbcn.com (localhost.localdomain [127.0.0.1])
	by ns3309580.ip-5-135-160.eu (Postfix) with ESMTP id 6B24EFB07E
	for <((account))>; Wed, 26 Nov 2014 10:11:11 +0100 (CET)
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="=_e84d4c3422dba03eeef17ee17c47a0f6"
Date: Wed, 26 Nov 2014 10:11:11 +0100
From: ((account))
To: ((account))
Subject: ((subject))
Message-ID: <((id))>
X-Sender: ((account))
User-Agent: Roundcube Webmail/0.9.5

I am waiting to send important mails from my e-mail address. This is important please!!

Thank you,
Oliver B.