我在自己的服务器上托管电子邮件，该服务器已通过 SPF、DKIM 和 DMARC 测试。
问题：
发送电子邮件时，GMail 会接收电子邮件并确认安全信息匹配、有效并通过。使用免费工具，例如MX 工具箱&gsuite 工具箱 MX 查找所有报告都很好（除了 GSuite - 专为 gmail 操作的服务器设计）并且其他各种工具都报告电子邮件设置良好。
另一方面，Outlook 一直将我的电子邮件发送到垃圾邮件箱，并显示以下内容：
此邮件被识别为垃圾邮件。这不是垃圾邮件 | 显示被阻止的内容
我发现这个地点提到垃圾邮件可信度，并寻找一些含义，有人建议 0 表示好，5 表示直接归为垃圾邮件。电子邮件标题（见下文）显示违规电子邮件的 SCL 为 0。
X-MS-Exchange-Organization-SCL: 0
Authentication-Results: spf=pass (sender IP is 139.162.179.128)
smtp.mailfrom=yourbud.co.za; hotmail.com; dkim=pass (signature was verified)
header.d=yourbud.co.za;hotmail.com; dmarc=pass action=none
header.from=yourbud.co.za;compauth=pass reason=100
Received-SPF: Pass (protection.outlook.com: domain of yourbud.co.za designates
139.162.179.128 as permitted sender) receiver=protection.outlook.com;
client-ip=139.162.179.128; helo=yourbud.co.za;
Received: from yourbud.co.za (139.162.179.128) by
CO1NAM11FT027.mail.protection.outlook.com (10.13.174.224) with Microsoft SMTP
Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
15.20.3216.10 via Frontend Transport; Fri, 24 Jul 2020 10:28:16 +0000
我能预见的唯一问题是：
- 发送的电子邮件是注册确认电子邮件。电子邮件包含远程内容（托管在不同网站上 - 图像），以及
- 还包含 2 个引用远程托管的 javascript 文件的标签。
- 反向 DNS 查找未指向域（但这仅显示为“警告”）
如果这些都不是问题，我只能求助于 Outlook，因为它的内部（黑盒）垃圾邮件规则导致分配这封“垃圾”电子邮件。
有任何建议或理由说明为什么我的电子邮件会被 Outlook 视为垃圾邮件？
从 Outlook 复制的电子邮件标题
Received: from CO1NAM11HT064.eop-nam11.prod.protection.outlook.com
(2603:10a6:800:bc::31) by VI1PR0402MB3568.eurprd04.prod.outlook.com with
HTTPS via VI1PR0602CA0021.EURPRD06.PROD.OUTLOOK.COM; Fri, 24 Jul 2020
10:28:18 +0000
Received: from CO1NAM11FT027.eop-nam11.prod.protection.outlook.com
(2a01:111:e400:3861::4a) by
CO1NAM11HT064.eop-nam11.prod.protection.outlook.com (2a01:111:e400:3861::98)
with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3216.10; Fri, 24 Jul
2020 10:28:17 +0000
Authentication-Results: spf=pass (sender IP is 139.162.179.128)
smtp.mailfrom=yourbud.co.za; hotmail.com; dkim=pass (signature was verified)
header.d=yourbud.co.za;hotmail.com; dmarc=pass action=none
header.from=yourbud.co.za;compauth=pass reason=100
Received-SPF: Pass (protection.outlook.com: domain of yourbud.co.za designates
139.162.179.128 as permitted sender) receiver=protection.outlook.com;
client-ip=139.162.179.128; helo=yourbud.co.za;
Received: from yourbud.co.za (139.162.179.128) by
CO1NAM11FT027.mail.protection.outlook.com (10.13.174.224) with Microsoft SMTP
Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
15.20.3216.10 via Frontend Transport; Fri, 24 Jul 2020 10:28:16 +0000
X-IncomingTopHeaderMarker:
OriginalChecksum:D6E88F9C3151AD1520248CC6645772B9A844F849CC8DD8AE6FC5EE749606FDCD;UpperCasedChecksum:6D610C90E52DC49F78193B59691F7671260AB8D9FA44022959281D00B67325CE;SizeAsReceived:1057;Count:9
Received: from yourbud.co.za (li1496-128.members.linode.com [139.162.179.128])
by yourbud.co.za (Postfix) with ESMTPSA id 516F360788
for <[email protected]>; Fri, 24 Jul 2020 10:28:15 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yourbud.co.za;
s=default; t=1595586495;
bh=rf9CbVnEOPPPXRX4Xn4gJ7V+mAmKS3JLdceKFyVbv0Y=;
h=From:To:Subject:Date:From;
b=SY5KOcJyv9CT5M3ZOcquaxxG3jB9r2Dvv4dJIGy+jDbwfn+Jo/QdKjF27D+CeCfwg
QWxAemMvskyt5Rk4faiMaSZVV3PId5P39OUXaapdvwihX6euQCUbKroV3nJK8ERM1y
CL6zYcOzUgPiLwukszQQvTY8NaeTmPjFhHs3GOi2hmoaZGsiFdu1FqsHszZBi41Jrj
fH2xU5PK/JrrT6Jy2Ad7hRA1NPdLurGc/g//V6i57oy21u9ZltwWeqBTOaKEETSgd4
Mjyw5P9JxT7hrUyGZRKv67fGrKjoXGZ2e+jqAa8dQ1lOWFczXULnFGt2U3NFlvqQKV
CxeC+WPJBYRPQ==
Content-Type: multipart/alternative;
boundary="--_NmP-5b401d2cab41559d-Part_1"
From: [email protected]
To: [email protected]
Subject: Welcome to YourBud.co.za
Message-ID: <[email protected]>
Date: Fri, 24 Jul 2020 10:28:15 +0000
X-IncomingHeaderCount: 9
Return-Path: [email protected]
X-MS-Exchange-Organization-ExpirationStartTime: 24 Jul 2020 10:28:16.7587
(UTC)
X-MS-Exchange-Organization-ExpirationStartTimeReason: OriginalSubmit
X-MS-Exchange-Organization-ExpirationInterval: 1:00:00:00.0000000
X-MS-Exchange-Organization-ExpirationIntervalReason: OriginalSubmit
X-MS-Exchange-Organization-Network-Message-Id:
2d6caf9e-b012-4f6b-a528-08d82fbc472f
X-EOPAttributedMessage: 0
X-EOPTenantAttributedMessage: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa:0
X-MS-Exchange-Organization-MessageDirectionality: Incoming
X-MS-PublicTrafficType: Email
X-MS-Exchange-Organization-AuthSource:
CO1NAM11FT027.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-Organization-AuthAs: Anonymous
X-MS-UserLastLogonTime: 7/24/2020 10:27:30 AM
X-MS-Office365-Filtering-Correlation-Id: 2d6caf9e-b012-4f6b-a528-08d82fbc472f
X-MS-TrafficTypeDiagnostic: CO1NAM11HT064:
X-MS-Exchange-EOPDirect: true
X-Sender-IP: 139.162.179.128
X-SID-PRA: [email protected]
X-SID-Result: PASS
X-MS-Exchange-Organization-PCL: 2
X-MS-Exchange-Organization-SCL: 0
X-Microsoft-Antispam: BCL:0;
X-Forefront-Antispam-Report:
CIP:139.162.179.128;CTRY:DE;LANG:en;SCL:0;SRV:;IPV:NLI;SFV:NSPM;H:yourbud.co.za;PTR:li1496-128.members.linode.com;CAT:NONE;SFTY:;SFS:;DIR:INB;SFP:;
X-OriginatorOrg: outlook.com
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2020 10:28:16.5688
(UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 2d6caf9e-b012-4f6b-a528-08d82fbc472f
X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa
X-MS-Exchange-CrossTenant-AuthSource:
CO1NAM11FT027.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: Internet
X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg:
00000000-0000-0000-0000-000000000000
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1NAM11HT064
X-MS-Exchange-Transport-EndToEndLatency: 00:00:02.1114274
X-MS-Exchange-Processed-By-BccFoldering: 15.20.3195.028
X-Microsoft-Antispam-Mailbox-Delivery:
abwl:0;wl:0;pcwl:0;kl:0;iwl:0;dwl:0;dkl:0;rwl:0;ucf:0;jmr:0;ex:0;auth:1;dest:J;OFR:SpamFilterAuthJ;ENG:(5062000282)(90000022)(90005022)(91005020)(90014020)(91030020)(91040020)(9000001)(9005001)(9010001)(9030002)(9050020)(9100041)(5061607266)(5061608174)(4900115)(8390131)(8377080)(8386120)(8385121)(8383139)(875032)(8403011)(98390011)(58390011)(8399029)(4920090)(6350004)(4950130)(4990090)(9140004);RF:JunkEmail;
X-Message-Info:
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X-Message-Delivery: Vj0xLjE7dXM9MDtsPTA7YT0wO0Q9MjtHRD0yO1NDTD02
X-Microsoft-Antispam-Message-Info:
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MIME-Version: 1.0
答案1
迈克尔说，微软、谷歌和雅虎必须严厉打击垃圾邮件。他们有数百万客户，每天可能收到数十亿封垃圾邮件。单单考虑数据存储成本就够了。更不用说带宽等了。
我认为您已经提到过这一点。将图片托管在其他网站上是网络钓鱼的一个很好的标记。您应该将其托管在您自己的网站上，在 yourbud.co.za 域下的某个地方。尝试在没有它的情况下发送电子邮件。
所有链接也应位于域内。理想情况下，它们应该是相当静态的。避免使用常见的跟踪标记，例如链接到https://www.yourbud.co.za/[电子邮件保护]或者https://www.yourbud.co.za/?id=swfofj3490834h。
即使是使用 HTTP 而不是 HTTPS 这样简单的事情也可能是根本原因。
我也会尝试更改电子邮件的措辞。尽量避免使用垃圾邮件发送者和网络钓鱼者常用的短语。在您自己的垃圾邮件文件夹中查找要尝试忽略的短语和措辞。
您使用的是便宜的、甚至免费的 SSL 证书提供商。使用 SSL 证书，您得到的是物有所值的。在 Google 上搜索其名称与“hotmail”的匹配项，看看是否存在任何问题。
我觉得测试不同的信息将是你唯一的选择。
如果这确实是根本原因，那么您应该确保定期向您的 hotmail 帐户发送电子邮件，以确保 MS 没有更改其规则以损害您的利益。
祝你好运！