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发出的电子邮件被标记为垃圾邮件。您能从电子邮件标题中看出什么问题吗？

tag-icon • tag-icon spam spf dkim
发出的电子邮件被标记为垃圾邮件。您能从电子邮件标题中看出什么问题吗？

我有一个使用 postfix 的仅发送服务器。发送的电子邮件会进入 Yahoo 的垃圾邮件文件夹。这是一封测试电子邮件，内容很短。我在下面附上标题。SPF、DKIM 看起来都很好。您能告诉我哪里出了问题吗？如能提供任何信息，我将不胜感激。提前致谢。

X-Apparently-To: [email protected]; Mon, 20 Mar 2017 03:31:18 +0000
Return-Path: <[email protected]>
X-YahooFilteredBulk: 108.175.3.185
Received-SPF: pass (domain of someone.com designates 108.175.3.185 as permitted sender)
X-YMailISG: e6rIYJ8WLDuk49UoGn3hxSIS2b.KDniejfeBb4NKiIKa1h4a
 tddwWZWiea7y3WiIUc04StH3tVGTgFUaba98qOjriKyhl8WNWZRUVvPohgAX
 4i32_AUxq42LMJc9PuKD3mgcD6rwwpH_SZ9lxS3LcmmsoGatFAboJ4CKvMou
 hNA6FF29ThW9eKVlNSkPwGQ6cSchsk7YAK48Ng67F.Wp3zcrKETCMJrkzOxa
 S2LFGVXeyR4TZpP4227K.Jz4KSn3W1srwqRsl2qW29aMf.VirJvLXuoCOPxi
 ZQJtI_rX0ZT9K1A0L74hb4qe7fNtuiV7aXWP_FmaiBFOVklNFgjjuuFfAfAO
 e2qYM7RK52n.RzShsDLlpCT8fvHTYZ4qtD1FT7XmRqorq48Ft0vEcNw7I33d
 bJd8nBMjstPdTMYEibvf7ifvymFGAWQe20wlBQ_Ecgd49f8L7.7OYOWylJZn
 Z8q.uaLXkFWlElw3GU_SZVjYDYqfykDnisqC72Jycb6LjXtIlLHC97eSMgds
 P8zqhjxxCq1k2.VNT4pG1se1Gt9Ua2skR2CeoyFX1H_mShl5l6fSJHi6MCeL
 Df2MbURrDNmbG8wgARLYKDRJNd_lVLORz7kpsldSjQ2XiPOcpXdI8pXYrXWM
 KK7feYTn3s0znIzQIWN1JMm3DtT43DUOfTitnegl4vszss8p7.vSiNOBy6v.
 1TX.WV2erqeTRIVGisYUPle3l8FDljbuS.6LsPA9S9syC1iDSwJbORp8BufJ
 CM4DxEx5wvSKEPsai26af7cwPH8qJnExNcAYrdxTSDUN.TEnG6rmwVrlX9t5
 kGuYk0sRKL8Ail1QfR.bC24Qx0FvejXy9U9Pd1UOxACVln7jEO4fF_Kofqp5
 rLngsx1Fj9VhkAgxNe36mS8AHa5LNMnxVcSMTRybCxKB3URFdwuhOAdlvKV_
 tBgwWNJYnJwJOa.WmgAYsGkCUuS_qrVkwz1uMfYR7HnF83wjSrAh1Nd4eG_j
 voeiJfhhz.k.EbCFFwDOuVwk__N1nR6NuaMu7ZV..Akm0InYh2mJTgzXdG5M
 39gdYWueaoVJvNEdZ7Qt6mR5rIqmZgYgN4aPnq4HZuh6d8KogFnq7KMilWyj
 e_Qy_BeDbb7AUOkmTsn4BZUcg04dQJdwwBl9XEwYyD7PXGHHYY_Xg8DX_jOw
 sZX9yuFQolv5PhQ4X44kmy5fdDo5X6SojmkJ.7EbW4LJMvx16ODufimnFUNH
 x4FFLxhxtizWdyQDxIr3Rh_TWpV0cUpl9cHPV6efIkhdhto6XwR4LpA5Pl61
 hDFfqjb9BsF_H5D4LMx9NM_NgEq3CBanVvZl1NfFPEflA4ekWbA8M5owdq_o
 mXtMZavXpiWNwaaGfDE.ICp8nIhDY8nnfssB8u4TCKrGqSPm2GhNkA--
X-Originating-IP: [108.175.3.185]
Authentication-Results: mta1195.mail.ne1.yahoo.com  from=someone.com; domainkeys=neutral (no sig);  from=someone.com; dkim=pass (ok)
Received: from 127.0.0.1  (EHLO someone.com) (108.175.3.185)
  by mta1195.mail.ne1.yahoo.com with SMTPS; Mon, 20 Mar 2017 03:31:18 +0000
Received: from someone.com (localhost.localdomain [127.0.0.1])
    by someone.com (Postfix) with ESMTP id 47C11A0B2B
    for <[email protected]>; Mon, 20 Mar 2017 03:31:16 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=someone.com; s=mail;
    t=1489980676; bh=Ba3gj8+xBPQLJTahTfzW6RbWQ/XPgESxkCi2B66PSQg=;
    h=Date:From:To:Subject:From;
    b=ZHIFwlXUiv0qxaHjJL3NDUqNEh1ABvbJ+e/6UJXLurQ1oaqq9d+NNSMRBXUVOIBV/
     op3MnSIcpGoDTsc04SUe2nABgIViMjJVbaq1ahrBBFEqpSPYlFx8YDRoRJ6DWPR07d
     FuWXoq6zxrLJchopEqm/nMayn7Xzsno4mufGDsvI=
Date: Mon, 20 Mar 2017 03:31:16 +0000 (UTC)
From: [email protected]
To: [email protected]
Message-ID: <[email protected]>
Subject: Test from Someone
MIME-Version: 1.0
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit
Content-Length: 6

Hello

答案1

X-Apparently-To: [email protected]; Mon, 20 Mar 2017 03:31:18 +0000
Return-Path: <[email protected]>
X-YahooFilteredBulk: 108.175.3.185
Received-SPF: pass (domain of someone.com designates 108.175.3.185 as permitted sender)

DNS（IP）被列入黑名单：X-YahooFilteredBulk：108.175.3.185

在这里检查 DNSBL：https://www.dnsbl.info/dnsbl-database-check.php

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