作为快速背景，我们有垃圾邮件与我们的域名一起发送。因此，我们已将 SPF 记录添加到我们的域 DNS，现在显然这将有助于确保不会发送此垃圾邮件，但问题是此垃圾邮件是否实际上来自我们的服务器。我们收到了来自我们的主机提供商的滥用报告，其中包含以下标题
Received: from mx.poczta.onet.pl (unresolved [10.174.34.83]:53105)
by ps15.m5r2.onet (Ota) with LMTP id 6B66CFF656749
for <x>; Fri, 10 Mar 2017 23:36:17 +0100 (CET)
Received: from www.mydomain.com (unknown [xxx.xxx.xxx.xxx])
by mx.poczta.onet.pl (Onet) with ESMTP id 3vg2DJ4tX1z92
for <x>; Fri, 10 Mar 2017 23:36:16 +0100 (CET)
Date: Fri, 10 Mar 2017 17:36:15 -0500
To: x
From: Bethany <bethany@mydomain.com>
Subject: [SPAM] Do you want to give your man a strong...?
Message-ID: <8399________________________58f3@www.mydomain.com>
X-Priority: 3
MIME-Version: 1.0
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