웹호스팅한 계정의 이메일로 보내지도 않은 메일에 대한 반송 메일이 4/2
일 이후 반송 메일이 엄청난 양이 수신되고 있습니다. 어떻게 조치를 취
해야 할까요?





- 호스팅 주소:  sarammani.com

- 계정: chansu



- 이메일 계정: chansu at sarammani.com





- 수신된 반송 메일의 내용 중 하나:



The original message was received at Mon, 4 Apr 2022 21:18:31 +0900

from [121.233.226.157]



   ----- The following addresses had permanent fatal errors -----

<0415cn....zyq at zjky.cn>

    (reason: 551 5.1.1 recipient is not exist)



   ----- Transcript of session follows -----

... while talking to qiye163mx01.mxmail.netease.com.:

>>> DATA

<<< 551 5.1.1 recipient is not exist

550 5.1.1 <0415cn....zyq at zjky.cn>... User
unknown

<<< 451 4.3.2 Internal server error

Reporting-MTA: dns; day.byus.net

Received-From-MTA: DNS; [121.233.226.157]

Arrival-Date: Mon, 4 Apr 2022 21:18:31 +0900



Final-Recipient: RFC822; 0415cn....zyq at zjky.cn

Action: failed

Status: 5.1.6

Remote-MTA: DNS; qiye163mx01.mxmail.netease.com

Diagnostic-Code: SMTP; 551 5.1.1 recipient is not exist

Last-Attempt-Date: Mon, 4 Apr 2022 21:18:32 +0900