※ 필수입력정보 ※

▷ 제품버젼 :

▷ 오류발생 메뉴/주소 :

▷ 에러메세지 :

▷ 질문내용 :

nMail을 사용하고 있는 @lexus.co.kr로 메일을 보내면 반송이 되어 옵니다.

에러메세지 중 user unknown이 나오는데, 해당 계정은 존재합니다. 

정상적으로 메일이 보내졌었습니다. 

---반송 메시지

The original message was received at Tue, 19 Jul 2016 18:19:40 +0900 from [211.47.66.155]

   ----- The following addresses had permanent fatal errors ----- <****@****>

    (reason: 550 Relay denied)

   ----- Transcript of session follows ----- ... while talking to mail.toyota.co.kr.:

>>> DATA

<<< 550 Relay denied

550 5.1.1 <****@****>... User unknown <<< 503 Bad sequence of commands

---detail.txt

Reporting-MTA: dns; smtphub.tt.co.kr

Received-From-MTA: DNS; [211.47.66.155]

Arrival-Date: Tue, 19 Jul 2016 18:19:40 +0900

Final-Recipient: RFC822; ****@****

Action: failed

Status: 5.1.1

Remote-MTA: DNS; mail.toyota.co.kr

Diagnostic-Code: SMTP; 550 Relay denied

Last-Attempt-Date: Tue, 19 Jul 2016 18:19:49 +0900