了解邮件失败通知，554

我想确认一封邮件失败的通知。 这是消息

Hi. This is the qmail-send program at mydomain.com I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. <[email protected]>: 1.2.3.4 does not like recipient. Remote host said: 554 <[email protected]>: Relay access denied Giving up on 1.2.3.4 

我的理解是，1.2.3.4没有设置为接收该域的邮件。

挖掘domain.com MX显示

 ;; ANSWER SECTION: domain.com. 6245 IN MX 10 mail.domain.com. domain.com. 6245 IN MX 20 mx.anotherdomain.com. 

（1.2.3.4是mx.anotherdomain.com。）。

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令人费解的部分是，我有报告说，从Gmail发送的消息被传递到这个地址。

PS这是一个适当的问题serverfault？