Swiftmailer电子邮件进入Hotmail垃圾邮件/垃圾邮件 - SPF传递，DKIM，签名邮件

Question

经过大量的研究和测试，电子邮件仍然进入Hotmail的垃圾邮件/垃圾邮件文件夹。这只发生在接收者第一次收到电子邮件时。电子邮件的内容包含2个链接，1个链接到Facebook链接，1个链接到主页。它还包含一个大凭证（嵌入图像）。

您可以在下面看到电子邮件标题。

x-store-info:fHNTDlzCF8Nxw6HwcfGQy+S7Ax/lqLSm6/r2PsXEfEWQfMQRjp5FAY6oFLcDDmHWNUyGadvGiwKs+TutTkilkPOBB+E88DQ1fBrugEeofz66a1xPqllGuCI9jiWGqdk5pWM/fkUP2Jg=
Authentication-Results: hotmail.com; spf=pass (sender IP is 91.230.244.220) smtp.mailfrom=info@wervingsactie.nl; dkim=none header.d=wervingsactie.nl; x-hmca=pass header.id=info@wervingsactie.nl
X-SID-PRA: info@wervingsactie.nl
X-AUTH-Result: PASS
X-SID-Result: PASS
X-Message-Status: n:n
X-Message-Delivery: Vj0xLjE7dXM9MDtsPTE7YT0wO0Q9MjtHRD0yO1NDTD0w
X-Message-Info: 3c21WZ1hAls2HdAcRMKfViPUjnGuSLEFZkWg6RkqDXyGLT95Q/5VEBT70WXQSnVyTgl2xF8Bczb4CjSj30TvCttkpM4LzaUs8PbMIk4PUxFTl0ui3/Wsz0Gm3UgnZOZ1Yfg25aSTR8LWR6e6uFI/gjow8r/6Q8X95nu0ytSZvn0=
Received: from regulus.webleeuw.nl ([91.230.244.220]) by BAY0-MC4-F21.Bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4900);
     Thu, 2 May 2013 08:40:36 -0700
Received: (qmail 29673 invoked by uid 10170); 2 May 2013 17:40:31 +0200
To: truetechnoandhouselover@hotmail.com
Subject: Verdien je rijbewijs terug bij Verkeersschool Breed
Message-ID: <1367509215.518288df620ce@swift.generated>
Date: Thu, 02 May 2013 17:40:15 +0200
From: Verkeersschool Breed <info@wervingsactie.nl>
Reply-To: "Wervingsactie.nl" <no-reply@wervingsactie.nl>
MIME-Version: 1.0
Content-Type: multipart/mixed;
 boundary="_=_swift_v4_1367509229518288ed76500_=_"
Return-Path: info@wervingsactie.nl
X-OriginalArrivalTime: 02 May 2013 15:40:36.0553 (UTC) FILETIME=[63F65390:01CE474B]

• IP（91.230.244.220）位于共享主机上
• IP（91.230.244.220）被backscatterrer列入黑名单
• Gmail：DKIM通过但中性=格式错误
• TXT v = spf1 a ip4：91.230.244.220 mx：mail.webleeuw.nl mx：regulus.webleeuw.nl~all
• TXT spf2.0 / pra ip4：91.230.244.220 include：mail.webleeuw.nl include：regulus.webleeuw.nl~all

SPF似乎与kitterman.com一起传递     接受输入，现在查询......     评估v = spf1 ...     SPF记录通过pySPF（Python SPF库）验证测试！

这是我们签署消息的方式

    // Sign message
    $smimeSigner = new Swift_Signers_DKIMSigner($open_ssl_private_key, 'wervingsactie.nl', 'april2013');
    $smimeSigner->setHashAlgorithm('rsa-sha256');
    $this->message->attachSigner($smimeSigner);

如果我们改用VPS，它能解决问题吗？我很好奇是否有人可以帮我解决这个问题。谢谢！