我使用 dnsimple 托管我的 DNS,并拥有有效的 SPF、DKIM 和 DMARC 记录来验证我从 Zoho 发送的电子邮件。但是,每当我向 @ucdavis.edu 帐户发送电子邮件时,我都会收到未投递的邮件回复
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lsmiyashita@ucdavis.edu, ERROR_CODE :550, ERROR_CODE :5.7.1 <admin@study.space>... Access denied
Received:from mail.zoho.com by mx.zohomail.com
with SMTP id 1478675695600485.6815385213283; Tue, 8 Nov 2016 23:14:55 -0800 (PST)
Message-ID:<15847f087ed.112901d8e106580.9166398699723335101@study.space>
Date:Tue, 08 Nov 2016 23:14:55 -0800
From:Jacob Bevilacqua <admin@study.space>
User-Agent:Zoho Mail
To:"lsmiyashita" <lsmiyashita@ucdavis.edu>
Subject:Here's a little test for you.
Content-Type:multipart/alternative;
boundary="----=_Part_335760_1020694757.1478675695597"
我尝试了几个不同的主机(GSuite、MailGun 和 Zoho),我遇到了同样的问题。我检查了,我没有在任何网站上被列入黑名单。我在 mail-tester.com 上进行了测试,得到了 10/10。为什么我的邮件发不出去。