Why do emails from my server end up in Gmail spam?

Question

gmail

I have two servers on digitalocean. On everyone sites and a mailer lie. For some reason, when I send emails to gmail, it always ends up in spam. Everything is configured: dkim, dmarc, spf.
And do I understand correctly? if there is mail on the server, then:
1. Hostname = mail.domain.com
2. MX = mail.domain.com
3. HELO = mail.domain.com
Header of the spam message:

Delivered-To: [email protected]
Received: by 2002:a2e:5417:0:0:0:0:0 with SMTP id i23csp2883311ljb;
        Tue, 19 Mar 2019 05:50:04 -0700 (PDT)
X-Google-Smtp-Source: APXvYqzWfdQHbTSToOJE+yoDjGP+oBRnqVmLvPEYQvtgZVhvz9rL6pyxSZew/fRC502QpWzZ4Nsq
X-Received: by 2002:a1c:4d:: with SMTP id 74mr3395765wma.1.1552999803875;
        Tue, 19 Mar 2019 05:50:03 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1552999803; cv=none;
        d=google.com; s=arc-20160816;
        b=jf2hBZkaVLBEbfmrYmEtea8+KwOBFPkZaWOBfoaJeugrS6UoG9CCUegJdQ1M+0exbE
         bIhMkpiQazX8i527KmIu7L5KhKofdpEFzpvDkT2+n6iCjoRizbjuirKrevmwb4wkadNW
         0/MqjG3Xo+/ZuKw6fN0voSYxqy1KrQgFxMvTsNjZ0It8aAECfIH0CvvwJGUItwmTP2b8
         Px1bEuygq4ZoGT2pe/pg3aLoIr9GObMyaKd2dhWI0nHsJRgqN+sB2JaTwD7tEQFkuPgp
         GStnLufZXFcQ6SYfS4H1j60AuZJuWN80imK1bu9rj2jQnJuR3QsaJ5xJEmPIdVshmLCK
         i7xw==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=mime-version:subject:message-id:to:from:date:dkim-signature;
        bh=7H4UFEeDVbAXaQUQldX9AuLYt5xAgG9rGPtNggS2gms=;
        b=HAV4J9pB4QRsbEr4itLrg58QxSvry7r3qOBvMuHc5AEOU//KHIoHW21t0mWvViO+1k
         nL9wG8bPRhOgl1jV9VHyVhB5gEOQtWiVUN/3YpmWxLEkF0oe5/LSoidmZUSoexu3aTuk
         MNkzEz+RT6oFOc9VEGkowH/+tXMClPl6iP9ci/G+8qcCjqJiUppfqGpmLKlsg4/nEGwJ
         dfEWEBheGjIPVvA2/Y/R6xp3yVKECITzKKfpNosWyYQvM1GlZkiPZQIn1BpVMWWqfigy
         /OfNEEjt/E51hB5+S3qpS8uB+goyxWdaMvBUZqEeduvDsZeCyycp4lJG7S9TVlcm6+LB
         zuog==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass [email protected] header.s=mail header.b=Tohkya6D;
       spf=pass (google.com: domain of [email protected] designates 46.101.194.12 as permitted sender) [email protected];
       dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=moveiton.net
Return-Path: <[email protected]>
Received: from mail.moveiton.net (mail.moveiton.net. [46.101.194.12])
        by mx.google.com with ESMTPS id 71si8769155wrl.236.2019.03.19.05.50.03
        (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Tue, 19 Mar 2019 05:50:03 -0700 (PDT)
Received-SPF: pass (google.com: domain of [email protected] designates 46.101.194.12 as permitted sender) client-ip=46.101.194.12;
Authentication-Results: mx.google.com;
       dkim=pass [email protected] header.s=mail header.b=Tohkya6D;
       spf=pass (google.com: domain of [email protected] designates 46.101.194.12 as permitted sender) [email protected];
       dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=moveiton.net
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=moveiton.net; s=mail; h=Content-Type:MIME-Version:Subject:Message-ID:To: From:Date:Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=7H4UFEeDVbAXaQUQldX9AuLYt5xAgG9rGPtNggS2gms=; b=Tohkya6DIuJsog1tubxoO27+qM gKqUG0QlAfz9tq/Okg4k/2JTjgq2/0FKumvNlfSIJzXso3mWf4eLr3PE2maEnE1dtyJkgZAn2MToV O3SqF/erasdzeSiznxnp5WxWrq0UcVh8OkkidhjqcujSryH+2kBVADZr9Aj9nIIxzPqQ=;
Received: from [94.158.83.159] (helo=[192.168.1.52]) by mail.moveiton.net with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from <[email protected]>) id 1h6EBv-0007n5-DO; Tue, 19 Mar 2019 14:50:03 +0200
Date: Tue, 19 Mar 2019 14:49:29 +0200
From: Anton Perepelitsa <[email protected]>
To: Anton Perepelitsa <[email protected]>, [email protected]
Message-ID: <[email protected]>
Subject: Testing
X-Readdle-Message-ID: [email protected]
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="5c90e575_519b500d_48ea"

--5c90e575_519b500d_48ea
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

Answer 1

HELO = PTR
and PTR must be meaningful, not auto-generated