title: cPanel sent email resulting as SPAM in Google and Outlook
body: <p>I've been struggling for quite some time with a specific email server setup based on a cPanel. For some reason emails sent out from this specific server are being marked as spam and delivered to spam/junk folders of Gmail and Outlook. Can somebody with bigger experience please have a look at my current configurations and maybe point out any flaws in the setup or give a hint as to what to look for? </p>
  
  <pre><code>IP addresses at disposal: x.x.x.127/27
  cPanel installed on: x.x.x.99
  Domains added to WHM on x.x.x.99-105
  In order not to disclose the domain names, I won't be able to provide exact domain names, sorry. 
  </code></pre>
  
  <p>Emails are being marked as spam when sending from x.x.x.99-105 by either web interface and using email clients. </p>
  
  <p>SPF, DKIM, MX, PTR entries are valid. 
  Domains and IP addresses is not within blacklist check that mxtoolbox.com website offers. </p>
  
  <pre><code>Mail-tester.com results: 8.1/10, main points off have gone from PYZOR_CHECK (-1.985). The message it provides is:
  Similar message reported on Pyzor (http://pyzor.org)
  Please test a real content, test Newsletters will always be flagged by Pyzor
  Adjust your message or request whitelisting (http://public.pyzor.org/whitelist/)
  </code></pre>
  
  <p>Microsoft SNDS does not provide reasons for being marked as spam from what I can see. 
  Microsoft support does not provide information on how to proceed with issue fixing. 
  Google Postmaster does not provide reasons for being marked as spam from what I can see. 
  Google support does not reply on how to proceed with issue fixing. </p>
  
  <p>Software versions: </p>
  
  <pre><code>/etc/redhat-release:CentOS Linux release 7.2.1511 (Core)
  /usr/local/cpanel/version:11.58.0.28
  /var/cpanel/envtype:standard
  CPANEL=release
  Server version: Apache/2.4.18 (Unix)
  Server built: Jun 10 2016 08:13:27
  Cpanel::Easy::Apache v3.32.14 rev9999
  PHP 5.5.36 (cli) (built: Jun 10 2016 08:15:50)
  Copyright (c) 1997-2015 The PHP Group
  Zend Engine v2.5.0, Copyright (c) 1998-2015 Zend Technologies
  mysql Ver 14.14 Distrib 5.6.31, for Linux (x86_64) using EditLine wrapper
  </code></pre>
  
  <p>I've completely lost my mind, discovering this... Outlook.com support only sent us a link to the terms and conditions of their service. Google did not respond to a support query at all. I would be glad for any clue on where to search for a solution.</p>