Unavailable Delivery : Deliver Timeout

[mao1855]

信箱每天都會收到很多封標題如下
Unavailable Delivery : Deliver Timeout
內文大多是
-----Original Message-----
From: postmaster <postmaster>
Sent: Monday, October 22, 2018 11:18 AM
To: service@xxx.com.tw
Subject: Unavailable Delivery : Deliver Timeout

This is a return mail sent by system automatically, please do not reply this mail.
Your mail can not be delivered successfully due to the reason below:

Response message:
To: kristinalcute@aol.com
Subject: Rivera a good position is the way to success
Reason: Timeout for attempting to re-send in 5 times.
Remote host: 67.195.228.87
Details: 421 4.7.0 [TSS04] Messages from xx.xx.xx.xx temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html

請問一下是哪裡設定出了問題呢?要如何排除這狀況呢?
麻煩告知 感恩~

[Arnor]

可能是跳板的信,
請按照本版置頂的文章檢查確認並處理
http://www.raidenhttpd.com/jlbb/viewtopic.php?t=17009
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素還尊
Team John Long.
Email: arnor@raidenmaild.com
公司網站 http://www.raidenmaild.com/company/

[mao1855]