Blackholed Emails to hotmail unless email is added to the accounts address book?

Hello, apologies if you have seen a similar email on this forum I know there are quite a few. I run a small server for my company and we seem to have trouble sending emails to hotmail.com users the emails are simply go missing, we do get a rejected message neither do they appear in the spam box. We have however found that only hotmail.com user that have the email address in their address list receive the email. We do not send out marketing emails just business emails to customers and suppliers. Things like HELO and Sender Verification Callouts compliance are set up in the EXIM config. We have a correct SPF and DKIM and we use DMARK reporting system where we get notifications from hotmail.com that the emails have been received and the SPF/DKIM/IP's are correct even though the emails have not appeared in. We have also signed up to Microsoft authentication system(s) DocuSign, SNDS and JMRP Our PRT/rDNS points to the server name sending out the emails. And we are not on any IP blacklists and have not ever been on a blacklist Out EXIM log shows that the email arrives with out any issue. (below)

2016-03-10 09:29:12 1adwu8-0002Wj-P0 H=(188.166.156.185) [::1]:33972 Warning: Message has been scanned: no virus or other harmful content was found
2016-03-10 09:29:12 1adwu8-0002Wj-P0 <= info@example.co.uk H=(188.166.156.185) [::1]:33972 P=esmtpa A=dovecot_login:info@example.co.uk S=623 id=71620f305ff2731836e0674ca8aba780@example.co.uk T="test3" for exampleuser@hotmail.com
2016-03-10 09:29:12 1adwu8-0002Wj-P0 SMTP connection outbound 1457602152 1adwu8-0002Wj-P0 example.co.uk exampleuser@hotmail.com
2016-03-10 09:29:14 1adwu8-0002Wj-P0 => exampleuser@hotmail.com R=dkim_lookuphost T=dkim_remote_smtp H=mx2.hotmail.com [65.55.37.88] X=TLSv1.2:ECDHE-RSA-AES256-SHA384:256 CV=yes C="250  <71620f305ff2731836e0674ca8aba780@example.co.uk> Queued mail for delivery"
2016-03-10 09:29:14 1adwu8-0002Wj-P0 Completed

So just as an example this is the header from an Email that is accepted because the "from" email is in the hotmail.com accounts Address Book

MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII;
format=flowed
Content-Transfer-Encoding: 7bit
Date: Thu, 10 Mar 2016 09:29:12 +0000
From: info@example.co.uk
To: exampleuser@hotmail.com
Subject: test3
Message-ID: <71620f305ff2731836e0674ca8aba780@example.co.uk>
X-Sender: info@example.co.uk
User-Agent: Roundcube Webmail/1.0.6
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname - server5.exampleserver.co.uk
X-AntiAbuse: Original Domain - hotmail.com
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - example.co.uk
X-Get-Message-Sender-Via: server5.exampleserver.co.uk: authenticated_id: info@example.co.uk
X-Authenticated-Sender: server5.exampleserver.co.uk: info@example.co.uk
X-Source:
X-Source-Args:
X-Source-Dir:
X-From-Rewrite: unmodified, already matched
Return-Path: info@example.co.uk
X-OriginalArrivalTime: 10 Mar 2016 09:29:15.0734 (UTC) FILETIME=[50686760:01D17AAF]

cPanelMichael

March 10, 2016 18:39

Hello :) The information you provided suggests the email sends out successfully from the cPanel server and is not bounced back to the sender. Thus, the issue here is with Hotmail. You may have to contact their support to determine what's happening to the message. They offer a specific URL for this:

phillbooth

March 16, 2016 16:10

JoseDieguez

March 16, 2016 18:46

This is a normal procedure from Microsoft/Outlook to make more people use their paid services. you do have a form on microsoft website (the form it's extremely well hidden) to fill, and make them stop "blackhole" your mails.

reeyhdz

October 12, 2016 01:02

Jose, by any chance do you know where it is?

October 12, 2016 08:05

Here is the link Outlook.com Postmaster

Blackholed Emails to hotmail unless email is added to the accounts address book?

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