======== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.2
- Linux/BSD distribution name and version: centos 6.5 x64
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): mySQL
- Web server (Apache or Nginx):Apache
- Manage mail accounts with iRedAdmin-Pro?
- Related log if you're reporting an issue:
====

Hi , I setup Iredmail correctly, includes SPF,PTR,DKIM, all passed. On DigitalOcean and Linode VPS.

Testing on mail-tester(website),the score is 10.It is perfect. IP passed mxtoolbox.com/blacklists(website) testing too.It is a clean IP.

But sent email to Gmail, always go into spam folder.

What is the reason ?   Two days ago, It can send to Gmail successfully, same setup method. After rebuilding the Iredmail today, it is always in Spam.

The gmail report is as below :
Delivered-To: benshinebags@gmail.com
Received: by 10.202.221.67 with SMTP id u64csp334132oig;
        Sat, 8 Aug 2015 22:43:33 -0700 (PDT)
X-Received: by 10.67.1.72 with SMTP id be8mr32444479pad.47.1439099013359;
        Sat, 08 Aug 2015 22:43:33 -0700 (PDT)
Return-Path: <postmaster@benstar-inspection.com>
Received: from mail.benstar-inspection.com (mail.benstar-inspection.com. [106.186.19.107])
        by mx.google.com with ESMTPS id wr4si26827934pab.181.2015.08.08.22.43.32
        for <benshinebags@gmail.com>
        (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Sat, 08 Aug 2015 22:43:33 -0700 (PDT)
Received-SPF: pass (google.com: domain of postmaster@benstar-inspection.com designates 106.186.19.107 as permitted sender) client-ip=106.186.19.107;
Authentication-Results: mx.google.com;
       spf=pass (google.com: domain of postmaster@benstar-inspection.com designates 106.186.19.107 as permitted sender) smtp.mail=postmaster@benstar-inspection.com;
       dkim=pass header.i=@benstar-inspection.com
Received: from mail.benstar-inspection.com (mail.benstar-inspection.com [127.0.0.1])
    by mail.benstar-inspection.com (Postfix) with ESMTP id 508BA4B43
    for <benshinebags@gmail.com>; Sun,  9 Aug 2015 05:43:31 +0000 (UTC)
Authentication-Results: mail.benstar-inspection.com (amavisd-new);
    dkim=pass (2048-bit key) reason="pass (just generated, assumed good)"
    header.d=benstar-inspection.com
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=
    benstar-inspection.com; h=user-agent:message-id:subject:subject
    :to:from:from:date:date:content-transfer-encoding:content-type
    :content-type:mime-version; s=dkim; t=1439099010; x=1439963011;
     bh=Zmo4IyeZ1uE0+cMqgl6XDoTC9ECucxNEWuzuqgelBFU=; b=GF4A09m37RYq
    ejQicy0yhCLCLhcj+8MMVvY6kzRI5RMdXEMdDgvilkKgQdwDG2kbsDgZGxPZQQ0p
    zfCvfyz0icig1u2XgAr2NmOiGz2hq5f3V/0n+gH/yv4Mps2Pbu3pZwBmU8zC266Z
    7Xd8JmHDwe0NtPjkQEYaFxp0TMugkrkDbI4RykZJUKsQmHBxlEVt50MsgXsrwY4B
    T2xgvIV2D9Ly68GWh+9x2yQOR5fXgCF77pZb/7V4KxiRrTWwZsvzg81Yo4N6Woo2
    FW6Mul9r+NFJfafnDn/lD54QZezfnvGJz330SpfYK+VSiVLyWzkqqpfvByzAMDNA
    DjyX+Cyncw==
X-Virus-Scanned: amavisd-new at mail.benstar-inspection.com
Received: from mail.benstar-inspection.com ([127.0.0.1])
    by mail.benstar-inspection.com (mail.benstar-inspection.com [127.0.0.1]) (amavisd-new, port 10024)
    with ESMTP id 5wwMYK_6NqZI for <benshinebags@gmail.com>;
    Sun,  9 Aug 2015 05:43:30 +0000 (UTC)
Received: from _ (mail.benstar-inspection.com [127.0.0.1])
    by mail.benstar-inspection.com (Postfix) with ESMTPSA id A08EA4B38
    for <benshinebags@gmail.com>; Sun,  9 Aug 2015 05:43:30 +0000 (UTC)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII;
format=flowed
Content-Transfer-Encoding: 7bit
Date: Sun, 09 Aug 2015 13:43:30 +0800
From: postmaster@benstar-inspection.com
To: benshinebags@gmail.com
Subject: fdsf
Message-ID: <b25da40ee2cc0830c7d116393243a23b@benstar-inspection.com>
X-Sender: postmaster@benstar-inspection.com
User-Agent: Roundcube Webmail

Could you please advise how to solve it ?

Many thanks!

Best Regards,

Ben