Gmail emails with dkim&spf end up in spam, without coming to inbox. Letters from [email protected] - inbox, [email protected] - spam. How to fix the problem?

Question

gmail

This email is in the inbox:
Important notes: spf=none , dkim=none

Delivered-To: [email protected]
Received: by 10.114.63.75 with SMTP id e11csp2961405lds;
        Wed, 11 Mar 2015 19:44:44 -0700 (PDT)
X-Received: by 10.112.166.102 with SMTP id zf6mr33241496lbb.24.1426128284855;
        Wed, 11 Mar 2015 19:44:44 -0700 (PDT)
Return-Path: <[email protected]>
Received: from school-php.com (school-php.com. [188.120.241.85])
        by mx.google.com with ESMTPS id k2si3474409lah.93.2015.03.11.19.44.44
        for <[email protected]>
        (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Wed, 11 Mar 2015 19:44:44 -0700 (PDT)
Received-SPF: none (google.com: [email protected] does not designate permitted sender hosts) client-ip=188.120.241.85;
Authentication-Results: mx.google.com;
       spf=none (google.com: [email protected] does not designate permitted sender hosts) [email protected]
Received: by school-php.com (Postfix, from userid 5006)
  id 7A8F0420CE1; Thu, 12 Mar 2015 04:44:44 +0200 (EET)
DKIM-Filter: OpenDKIM Filter v2.9.1 school-php.com 7A8F0420CE1
To: [email protected]
Subject: test
X-PHP-Originating-Script: 5006:temp7.php
Message-Id: <[email protected]>
Date: Thu, 12 Mar 2015 04:44:44 +0200 (EET)
From: [email protected] (new6.school-php.com)

test

And now the letter is in spam:
spf=pass, dkim=pass

Delivered-To: [email protected]
Received: by 10.114.63.75 with SMTP id e11csp2961142lds;
        Wed, 11 Mar 2015 19:43:57 -0700 (PDT)
X-Received: by 10.152.1.70 with SMTP id 6mr14077363lak.83.1426128237651;
        Wed, 11 Mar 2015 19:43:57 -0700 (PDT)
Return-Path: <[email protected]>
Received: from school-php.com (school-php.com. [188.120.241.85])
        by mx.google.com with ESMTPS id wx4si3465353lbb.107.2015.03.11.19.43.57
        for <[email protected]>
        (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Wed, 11 Mar 2015 19:43:57 -0700 (PDT)
Received-SPF: pass (google.com: domain of [email protected] designates 188.120.241.85 as permitted sender) client-ip=188.120.241.85;
Authentication-Results: mx.google.com;
       spf=pass (google.com: domain of [email protected] designates 188.120.241.85 as permitted sender) [email protected];
       dkim=pass [email protected]
Received: by school-php.com (Postfix, from userid 5006)
  id 430CC420CE1; Thu, 12 Mar 2015 04:43:57 +0200 (EET)
DKIM-Filter: OpenDKIM Filter v2.9.1 school-php.com 430CC420CE1
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=school-php.com;
  s=mail; t=1426128237;
  bh=g3zLYH4xKxcPrHOD18z9YfpQcnk/GaJedfustWU5uGs=;
  h=To:Subject:Date:From:From;
  b=GGUaCx4e2W+VEElArWpPX7Puie/j3VKBO22dQKqwkvCS2KsG6acMktfJ3YZq9/WTa
   xQ6RB3XTbetZlpYz9l46rb4wStfJyH20b20Ju7fxKpASD3h7UCUfVP+cC5DF4/1lyZ
   QJTCqxrEaGbZuFooihTrvtRJboKMtar6xQIVbnbw=
To: [email protected]
Subject: test
X-PHP-Originating-Script: 5006:temp7.php
Message-Id: <[email protected]>
Date: Thu, 12 Mar 2015 04:43:57 +0200 (EET)
From: [email protected] (new6.school-php.com)

test

Similarly created 2 mailboxes:
[email protected] , [email protected] . The content of the letters is the same, noreply in spam, admin in inbox.
_______
I used to always think that [email protected] is a box that you shouldn't reply to, automatic mailings like "registration on the site", while these are not mass mailings to add procedure:bulk.
Actually the main questions are:
1) Where did I go wrong? Why such strange behavior and signatures only interfere with delivery?
2) How to properly name mailboxes? Maybe noreply is no longer in vogue? Is a simple [email protected] more efficient?
3) This is not related to this topic, but maybe someone post-scriptum will tell you where to correct dkim & spf signatures so that they capture not only the domain, but its subdomains automatically (for the domain and ALL subdomains).

Answer 1

Does this tell you something?
http://2ip.ru/spam/?ip=school-php.com&turingCode=
UCEPROTECTL3 LISTED Your ISP ISPSYSTEM-AS ISPsystem Autonomous System/
AS29182 is UCEPROTECT-Level3 listed for hosting a total of 117 abusers. See: www.uceprotect.net
rblcheck.php?ipr=188.120.241.85 2100
seconds

Answer 2

I took VDS from them 2 weeks ago, only my sites hang on my IP. Lvl3 does not mean IP, but in general a provider, a hoster. It seems to me that there are spammers on any provider. How to do better?

Answer 3

Faced a similar problem. I use Yandex.PDD to send mail. My IP seems to be clean (checked by "47 bases", it seems on 2ip.ru).
I checked sending to my mailboxes (mail.ru, gmail.com) - everything is ok. Letters to other users are delivered to spam.
I decided to check the domain for "spam databases", it turned out to be clean. But one of the IP addresses for mx.yandex.net hangs in several databases:
Result:
www.host-tracker.com/InstantCheck/ResultComplete/3...
Or here's a screen: Where to dig, can someone tell me?