我不太确定这是否属于这里，所以如果我把这个发到了错误的论坛，请随时给我重定向。我在 thecabbage.eu 域名下注册了一个小型 apache2 网络服务器（raspberry）（目前不在线，所以不要尝试 :)，但今天醒来时，我在收件箱中发现了大约 40 封这样的电子邮件：
This is an automatically generated Delivery Status Notification
THIS IS A WARNING MESSAGE ONLY.
YOU DO NOT NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipient has been delayed:
[email protected]
Message will be retried for 2 more day(s)
Technical details of temporary failure: Google tried to deliver your message, but it was rejected by the server for the recipient domain thecabbage.eu by eforward3.registrar-servers.com. [38.101.213.199].
The error that the other server returned was: 450 4.1.1 : Recipient address rejected: unverified address: unknown user: "[email protected]"
----- Original message -----
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:message-id:date:from:to:subject:content-type:x-cron-env :x-cron-env:x-cron-env:x-cron-env:x-cron-env; bh=k/8GlT8DBvBIJzBOOfw8qR0kGPzj7m9ZR/aj+JOKBhg=; b=Ne2qnI58Cj7zjdBGlw0UqHyGltmAiVc1acnD9Wo207Y9T0w1h3TUWb73E1VZwdJm3j kxxNCrsiKLKUfyUmUJPataGPPOnBR/I0wV8WcQPlxu5vRn2omTracmId4W11hib9EUdK OgHs1NJZw8h1zIBijkz6gDgVKkD6P2PlrtvlCGvqJiPk6N8vSksBshq2ACuDamLktKFq gkWZke9OcfkjpqEri1aiFoenwrsi6uFNLlVRx3BED/Igcn01YqsQiHejlSDMiol4JVFx 1OATY448EinQj2XJJSGW+bNZckjo5S9ErxROI8uff2ic+DONkpSn9BFDYPZ1MqmlwguG zwwQ== X-Received: by 10.205.116.131 with SMTP id fi3mr5153452bkc.58.1365097204482; Thu, 04 Apr 2013 10:40:04 -0700 (PDT) Return-Path: Received: from thecabbage.eu (h081217060242.dyn.cm.kabsi.at. [MY IP]) by mx.google.com with ESMTPS id o2sm6728296bkv.3.2013.04.04.10.40.02 (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 04 Apr 2013 10:40:03 -0700 (PDT) Message-ID: <[email protected]> Received: by thecabbage.eu (sSMTP sendmail emulation); Thu, 04 Apr 2013 19:40:01 +0200 Date: Thu, 04 Apr 2013 19:40:01 +0200 From: root To: root Subject: Cron test -x /etc/init.d/sendmail && /usr/share/sendmail/sendmail cron-msp Content-Type: text/plain; charset=UTF-8 X-Cron-Env: X-Cron-Env: X-Cron-Env: X-Cron-Env: X-Cron-Env:
/usr/share/sendmail/sendmail: 899: /usr/share/sendmail/sendmail: /usr/sbin/sendmail-msp: not found
我几乎不知道是什么原因导致了这个错误...我从来没有向该地址发送过任何电子邮件，也没有安装 sendmail（这似乎导致了错误）。有什么线索吗？谢谢！
答案1
eforwardX.registrar-servers.com 服务器（不确定它们实际上是什么）设置在 thecabbage.eu 的 MX 记录（DNS 邮件服务器条目）中。
假设这是来自 Gmail 的退回邮件，看起来您通过 gmail 向自己发送了一封电子邮件（发件人：root 收件人：root）。
Root 可能拥有电子邮件地址“[电子邮件保护]“，并且它已被 thecabbage.eu (eforwardX.registrar-servers.com) 的邮件服务器拒绝，被视为未知用户。
要停止这些消息，您需要为 thecabbage.eu 域创建/获取邮件服务器，并更新 DNS MX 记录以指向它，以便您可以接收[电子邮件保护]电子邮件。这样您就不会收到退回邮件。:)
或者可能只是将 Root 的电子邮件地址更改为您的 gmail 帐户。