发送至特定地址的电子邮件被退回
我发给某位客户的电子邮件一直被退回。我今天发了两封电子邮件,同一封发到了客户 .com 域中的两个邮件地址。第一封发到了,[email protected]被退回了。第二封发到了[email protected],(到目前为止)没有被退回的迹象。 我收到的退回邮件是: This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its...