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▷ 제품버젼 : Nmail PHP 3.1 UTF-8

▷ 오류발생 메뉴/주소 :메일 발송 후 수신된 리턴 메일입니다.

▷ 에러메세지 :

From: mta-nm02.dothome.co.kr PostMaster [mailto:****@****]
Sent: 2020년 12월 4일 Friday 10:19 AM
To: ****@****
Subject: Error sending message [***-****-****62.7f85da7fc700.50c.1c5098.eml] from [mta-nm02.dothome.co.kr]

[<00>] XMail bounce: Rcpt=[****@****];Error=[550 5.7.1 Unfortunately, messages from [112.175.185.18] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [AM7EUR06FT011.eop-eur06.prod.protection.outlook.com]]

[<01>] Error sending message [***-****-****62.7f85da7fc700.50c.1c5098.eml] from [mta-nm02.dothome.co.kr].

ID:        <S23F17CB>
Mail From: <****@****>
Rcpt To:   <****@****>
Server:    <hotmail-com.olc.protection.outlook.com.> [hotmail-com.olc.protection.outlook.com.]

[<02>] The reason of the delivery failure was:

550 5.7.1 Unfortunately, messages from [112.175.185.18] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [AM7EUR06FT011.eop-eur06.prod.protection.outlook.com]

[<04>] Here is listed the message log file:

[PeekTime] ***-****-**** : Fri, 4 Dec 2020 10:18:35 +0900 <<

ErrCode   = -152
ErrString = End of socket stream data

SMAIL SMTP-Send MX = "hotmail-com.olc.protection.outlook.com." SMTP = "mta-nm02.dothome.co.kr" From = "****@****" To = "****@****" Failed !

SMTP-Error = "550 5.7.1 Unfortunately, messages from [112.175.185.18] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [AM7EUR06FT011.eop-eur06.prod.protection.outlook.com]"

SMTP-Server = "hotmail-com.olc.protection.outlook.com."

>>

[<05>] Here is listed the initial part of the message:

X-AuthUser: ****@****

Received: from DESKTOPU9I5KR7 ([175.193.191.221]:52681)

                by mta-nm02.dothome.co.kr with [XMail 1.27 PassKorea160330 ESMTP Server]
                id <S23F17CB> for <****@****> from <****@****>;
                Fri, 4 Dec 2020 10:18:35 +0900

From: "George Whitfield" <****@****>
To: <****@****>
Subject: Excellent Article!
Date: Fri, 4 Dec 2020 10:18:36 +0900
Message-ID: <00e201d6c9db$63e5e580$2bb1b080$@halcyonsearch.com>
MIME-Version: 1.0
Content-Type: multipart/related;

                boundary="----=_NextPart_000_00E3_01D6CA26.D3CE9EF0"

X-Mailer: Microsoft Outlook 15.0

Thread-Index: AdbJ22NDjH5QH1wZRsOxQtH5iXi+pA==

Content-Language: en-us

▷ 질문내용 : halcyonsearch.com 메일 서비스에서 메일 발송 후 해당 리턴 메일이 수신되어 문의가 접수되었습니다. 리턴메일 분석 페이지 상에 "550 5.7.1 Service unavailable" 키워드 검색 시 조회되는 내용이 없어, 어떤 문제인 지 조치 방안이 어떻게 될 지 확인 부탁 드리겠습니다.